| Message ID | 20171017203232.2262-2-nayna@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, Oct 17, 2017 at 04:32:29PM -0400, Nayna Jain wrote: > The function wait_for_tpm_stat() is currently defined in > tpm-interface file. It is a hardware specific function used > only by tpm_tis and xen-tpmfront, so it is removed from > tpm-interface.c and defined in respective driver files. > > Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com> > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > --- > drivers/char/tpm/tpm-interface.c | 60 ---------------------------------------- > drivers/char/tpm/tpm.h | 2 -- > drivers/char/tpm/tpm_tis_core.c | 60 ++++++++++++++++++++++++++++++++++++++++ > drivers/char/tpm/xen-tpmfront.c | 60 ++++++++++++++++++++++++++++++++++++++++ > 4 files changed, 120 insertions(+), 62 deletions(-) > > diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c > index 1d6729be4cd6..313f7618d569 100644 > --- a/drivers/char/tpm/tpm-interface.c > +++ b/drivers/char/tpm/tpm-interface.c > @@ -1035,66 +1035,6 @@ int tpm_send(u32 chip_num, void *cmd, size_t buflen) > } > EXPORT_SYMBOL_GPL(tpm_send); > > -static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > - bool check_cancel, bool *canceled) > -{ > - u8 status = chip->ops->status(chip); > - > - *canceled = false; > - if ((status & mask) == mask) > - return true; > - if (check_cancel && chip->ops->req_canceled(chip, status)) { > - *canceled = true; > - return true; > - } > - return false; > -} > - > -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, > - wait_queue_head_t *queue, bool check_cancel) > -{ > - unsigned long stop; > - long rc; > - u8 status; > - bool canceled = false; > - > - /* check current status */ > - status = chip->ops->status(chip); > - if ((status & mask) == mask) > - return 0; > - > - stop = jiffies + timeout; > - > - if (chip->flags & TPM_CHIP_FLAG_IRQ) { > -again: > - timeout = stop - jiffies; > - if ((long)timeout <= 0) > - return -ETIME; > - rc = wait_event_interruptible_timeout(*queue, > - wait_for_tpm_stat_cond(chip, mask, check_cancel, > - &canceled), > - timeout); > - if (rc > 0) { > - if (canceled) > - return -ECANCELED; > - return 0; > - } > - if (rc == -ERESTARTSYS && freezing(current)) { > - clear_thread_flag(TIF_SIGPENDING); > - goto again; > - } > - } else { > - do { > - tpm_msleep(TPM_TIMEOUT); > - status = chip->ops->status(chip); > - if ((status & mask) == mask) > - return 0; > - } while (time_before(jiffies, stop)); > - } > - return -ETIME; > -} > -EXPORT_SYMBOL_GPL(wait_for_tpm_stat); > - > #define TPM_ORD_SAVESTATE 152 > #define SAVESTATE_RESULT_SIZE 10 > > diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h > index 2d5466a72e40..4fc83ac7abeb 100644 > --- a/drivers/char/tpm/tpm.h > +++ b/drivers/char/tpm/tpm.h > @@ -525,8 +525,6 @@ int tpm_do_selftest(struct tpm_chip *chip); > unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); > int tpm_pm_suspend(struct device *dev); > int tpm_pm_resume(struct device *dev); > -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, > - wait_queue_head_t *queue, bool check_cancel); > > static inline void tpm_msleep(unsigned int delay_msec) > { > diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c > index 63bc6c3b949e..b33126a35694 100644 > --- a/drivers/char/tpm/tpm_tis_core.c > +++ b/drivers/char/tpm/tpm_tis_core.c > @@ -31,6 +31,66 @@ > #include "tpm.h" > #include "tpm_tis_core.h" > > +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > + bool check_cancel, bool *canceled) > +{ > + u8 status = chip->ops->status(chip); > + > + *canceled = false; > + if ((status & mask) == mask) > + return true; > + if (check_cancel && chip->ops->req_canceled(chip, status)) { > + *canceled = true; > + return true; > + } > + return false; > +} > + > +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, > + unsigned long timeout, wait_queue_head_t *queue, > + bool check_cancel) > +{ > + unsigned long stop; > + long rc; > + u8 status; > + bool canceled = false; > + > + /* check current status */ > + status = chip->ops->status(chip); > + if ((status & mask) == mask) > + return 0; > + > + stop = jiffies + timeout; > + > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > +again: > + timeout = stop - jiffies; > + if ((long)timeout <= 0) > + return -ETIME; > + rc = wait_event_interruptible_timeout(*queue, > + wait_for_tpm_stat_cond(chip, mask, check_cancel, > + &canceled), > + timeout); > + if (rc > 0) { > + if (canceled) > + return -ECANCELED; > + return 0; > + } > + if (rc == -ERESTARTSYS && freezing(current)) { > + clear_thread_flag(TIF_SIGPENDING); > + goto again; > + } > + } else { > + do { > + tpm_msleep(TPM_TIMEOUT); > + status = chip->ops->status(chip); > + if ((status & mask) == mask) > + return 0; > + } while (time_before(jiffies, stop)); > + } > + return -ETIME; > +} > + > /* Before we attempt to access the TPM we must see that the valid bit is set. > * The specification says that this bit is 0 at reset and remains 0 until the > * 'TPM has gone through its self test and initialization and has established > diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c > index 656e8af95d52..d20a0a9ded27 100644 > --- a/drivers/char/tpm/xen-tpmfront.c > +++ b/drivers/char/tpm/xen-tpmfront.c > @@ -39,6 +39,66 @@ enum status_bits { > VTPM_STATUS_CANCELED = 0x8, > }; > > +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > + bool check_cancel, bool *canceled) > +{ > + u8 status = chip->ops->status(chip); > + > + *canceled = false; > + if ((status & mask) == mask) > + return true; > + if (check_cancel && chip->ops->req_canceled(chip, status)) { > + *canceled = true; > + return true; > + } > + return false; > +} > + > +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, > + unsigned long timeout, wait_queue_head_t *queue, > + bool check_cancel) > +{ > + unsigned long stop; > + long rc; > + u8 status; > + bool canceled = false; > + > + /* check current status */ > + status = chip->ops->status(chip); > + if ((status & mask) == mask) > + return 0; > + > + stop = jiffies + timeout; > + > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > +again: > + timeout = stop - jiffies; > + if ((long)timeout <= 0) > + return -ETIME; > + rc = wait_event_interruptible_timeout(*queue, > + wait_for_tpm_stat_cond(chip, mask, check_cancel, > + &canceled), > + timeout); > + if (rc > 0) { > + if (canceled) > + return -ECANCELED; > + return 0; > + } > + if (rc == -ERESTARTSYS && freezing(current)) { > + clear_thread_flag(TIF_SIGPENDING); > + goto again; > + } > + } else { > + do { > + tpm_msleep(TPM_TIMEOUT); > + status = chip->ops->status(chip); > + if ((status & mask) == mask) > + return 0; > + } while (time_before(jiffies, stop)); > + } > + return -ETIME; > +} > + > static u8 vtpm_status(struct tpm_chip *chip) > { > struct tpm_private *priv = dev_get_drvdata(&chip->dev); > -- > 2.13.3 > This commit caused a compiler warning because freezer.h was not included to xen-tpmfront.c. I manually fixed it. Reviewed-by: Jarkko Sakkinen <jarkkko.sakkinen@linux.intel.com> Tested-by: Jarkko Sakkinen <jarkkko.sakkinen@linux.intel.com> /Jarkko -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
> On Tue, Oct 17, 2017 at 04:32:29PM -0400, Nayna Jain wrote: > > The function wait_for_tpm_stat() is currently defined in > > tpm-interface file. It is a hardware specific function used > > only by tpm_tis and xen-tpmfront, so it is removed from > > tpm-interface.c and defined in respective driver files. > > > > Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > > Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com> > > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > > --- > > drivers/char/tpm/tpm-interface.c | 60 ---------------------------------------- > > drivers/char/tpm/tpm.h | 2 -- > > drivers/char/tpm/tpm_tis_core.c | 60 > ++++++++++++++++++++++++++++++++++++++++ > > drivers/char/tpm/xen-tpmfront.c | 60 > ++++++++++++++++++++++++++++++++++++++++ > > 4 files changed, 120 insertions(+), 62 deletions(-) > > > > diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm- > interface.c > > index 1d6729be4cd6..313f7618d569 100644 > > --- a/drivers/char/tpm/tpm-interface.c > > +++ b/drivers/char/tpm/tpm-interface.c > > @@ -1035,66 +1035,6 @@ int tpm_send(u32 chip_num, void *cmd, size_t > buflen) > > } > > EXPORT_SYMBOL_GPL(tpm_send); > > > > -static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > > - bool check_cancel, bool *canceled) > > -{ > > - u8 status = chip->ops->status(chip); > > - > > - *canceled = false; > > - if ((status & mask) == mask) > > - return true; > > - if (check_cancel && chip->ops->req_canceled(chip, status)) { > > - *canceled = true; > > - return true; > > - } > > - return false; > > -} > > - > > -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long > timeout, > > - wait_queue_head_t *queue, bool check_cancel) > > -{ > > - unsigned long stop; > > - long rc; > > - u8 status; > > - bool canceled = false; > > - > > - /* check current status */ > > - status = chip->ops->status(chip); > > - if ((status & mask) == mask) > > - return 0; > > - > > - stop = jiffies + timeout; > > - > > - if (chip->flags & TPM_CHIP_FLAG_IRQ) { > > -again: > > - timeout = stop - jiffies; > > - if ((long)timeout <= 0) > > - return -ETIME; > > - rc = wait_event_interruptible_timeout(*queue, > > - wait_for_tpm_stat_cond(chip, mask, check_cancel, > > - &canceled), > > - timeout); > > - if (rc > 0) { > > - if (canceled) > > - return -ECANCELED; > > - return 0; > > - } > > - if (rc == -ERESTARTSYS && freezing(current)) { > > - clear_thread_flag(TIF_SIGPENDING); > > - goto again; > > - } > > - } else { > > - do { > > - tpm_msleep(TPM_TIMEOUT); > > - status = chip->ops->status(chip); > > - if ((status & mask) == mask) > > - return 0; > > - } while (time_before(jiffies, stop)); > > - } > > - return -ETIME; > > -} > > -EXPORT_SYMBOL_GPL(wait_for_tpm_stat); > > - > > #define TPM_ORD_SAVESTATE 152 > > #define SAVESTATE_RESULT_SIZE 10 > > > > diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h > > index 2d5466a72e40..4fc83ac7abeb 100644 > > --- a/drivers/char/tpm/tpm.h > > +++ b/drivers/char/tpm/tpm.h > > @@ -525,8 +525,6 @@ int tpm_do_selftest(struct tpm_chip *chip); > > unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 > ordinal); > > int tpm_pm_suspend(struct device *dev); > > int tpm_pm_resume(struct device *dev); > > -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long > timeout, > > - wait_queue_head_t *queue, bool check_cancel); > > > > static inline void tpm_msleep(unsigned int delay_msec) > > { > > diff --git a/drivers/char/tpm/tpm_tis_core.c > b/drivers/char/tpm/tpm_tis_core.c > > index 63bc6c3b949e..b33126a35694 100644 > > --- a/drivers/char/tpm/tpm_tis_core.c > > +++ b/drivers/char/tpm/tpm_tis_core.c > > @@ -31,6 +31,66 @@ > > #include "tpm.h" > > #include "tpm_tis_core.h" > > > > +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > > + bool check_cancel, bool *canceled) > > +{ > > + u8 status = chip->ops->status(chip); > > + > > + *canceled = false; > > + if ((status & mask) == mask) > > + return true; > > + if (check_cancel && chip->ops->req_canceled(chip, status)) { > > + *canceled = true; > > + return true; > > + } > > + return false; > > +} > > + > > +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, > > + unsigned long timeout, wait_queue_head_t *queue, > > + bool check_cancel) > > +{ > > + unsigned long stop; > > + long rc; > > + u8 status; > > + bool canceled = false; > > + > > + /* check current status */ > > + status = chip->ops->status(chip); > > + if ((status & mask) == mask) > > + return 0; > > + > > + stop = jiffies + timeout; > > + > > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > > +again: > > + timeout = stop - jiffies; > > + if ((long)timeout <= 0) > > + return -ETIME; > > + rc = wait_event_interruptible_timeout(*queue, > > + wait_for_tpm_stat_cond(chip, mask, check_cancel, > > + &canceled), > > + timeout); > > + if (rc > 0) { > > + if (canceled) > > + return -ECANCELED; > > + return 0; > > + } > > + if (rc == -ERESTARTSYS && freezing(current)) { > > + clear_thread_flag(TIF_SIGPENDING); > > + goto again; > > + } > > + } else { > > + do { > > + tpm_msleep(TPM_TIMEOUT); > > + status = chip->ops->status(chip); > > + if ((status & mask) == mask) > > + return 0; > > + } while (time_before(jiffies, stop)); > > + } > > + return -ETIME; > > +} > > + > > /* Before we attempt to access the TPM we must see that the valid bit is > set. > > * The specification says that this bit is 0 at reset and remains 0 until the > > * 'TPM has gone through its self test and initialization and has established > > diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen- > tpmfront.c > > index 656e8af95d52..d20a0a9ded27 100644 > > --- a/drivers/char/tpm/xen-tpmfront.c > > +++ b/drivers/char/tpm/xen-tpmfront.c > > @@ -39,6 +39,66 @@ enum status_bits { > > VTPM_STATUS_CANCELED = 0x8, > > }; > > > > +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > > + bool check_cancel, bool *canceled) > > +{ > > + u8 status = chip->ops->status(chip); > > + > > + *canceled = false; > > + if ((status & mask) == mask) > > + return true; > > + if (check_cancel && chip->ops->req_canceled(chip, status)) { > > + *canceled = true; > > + return true; > > + } > > + return false; > > +} > > + > > +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, > > + unsigned long timeout, wait_queue_head_t *queue, > > + bool check_cancel) > > +{ > > + unsigned long stop; > > + long rc; > > + u8 status; > > + bool canceled = false; > > + > > + /* check current status */ > > + status = chip->ops->status(chip); > > + if ((status & mask) == mask) > > + return 0; > > + > > + stop = jiffies + timeout; > > + > > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > > +again: > > + timeout = stop - jiffies; > > + if ((long)timeout <= 0) > > + return -ETIME; > > + rc = wait_event_interruptible_timeout(*queue, > > + wait_for_tpm_stat_cond(chip, mask, check_cancel, > > + &canceled), > > + timeout); > > + if (rc > 0) { > > + if (canceled) > > + return -ECANCELED; > > + return 0; > > + } > > + if (rc == -ERESTARTSYS && freezing(current)) { > > + clear_thread_flag(TIF_SIGPENDING); > > + goto again; > > + } > > + } else { > > + do { > > + tpm_msleep(TPM_TIMEOUT); > > + status = chip->ops->status(chip); > > + if ((status & mask) == mask) > > + return 0; > > + } while (time_before(jiffies, stop)); > > + } > > + return -ETIME; > > +} > > + > > static u8 vtpm_status(struct tpm_chip *chip) > > { > > struct tpm_private *priv = dev_get_drvdata(&chip->dev); > > -- > > 2.13.3 > > > > This commit caused a compiler warning because freezer.h was not included > to xen-tpmfront.c. I manually fixed it. Yep, and checkpatch.pl still complains about some stuff (mostly whitespace) in both patch 1/4 and 2/4. When fixed patches are available, I can run them again through my automation. > Reviewed-by: Jarkko Sakkinen <jarkkko.sakkinen@linux.intel.com> > Tested-by: Jarkko Sakkinen <jarkkko.sakkinen@linux.intel.com> > > /Jarkko Alexander -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Thu, Oct 19, 2017 at 05:00:29PM +0000, Alexander.Steffen@infineon.com wrote: > > On Tue, Oct 17, 2017 at 04:32:29PM -0400, Nayna Jain wrote: > > > The function wait_for_tpm_stat() is currently defined in > > > tpm-interface file. It is a hardware specific function used > > > only by tpm_tis and xen-tpmfront, so it is removed from > > > tpm-interface.c and defined in respective driver files. > > > > > > Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > > > Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com> > > > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > > > --- > > > drivers/char/tpm/tpm-interface.c | 60 ---------------------------------------- > > > drivers/char/tpm/tpm.h | 2 -- > > > drivers/char/tpm/tpm_tis_core.c | 60 > > ++++++++++++++++++++++++++++++++++++++++ > > > drivers/char/tpm/xen-tpmfront.c | 60 > > ++++++++++++++++++++++++++++++++++++++++ > > > 4 files changed, 120 insertions(+), 62 deletions(-) > > > > > > diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm- > > interface.c > > > index 1d6729be4cd6..313f7618d569 100644 > > > --- a/drivers/char/tpm/tpm-interface.c > > > +++ b/drivers/char/tpm/tpm-interface.c > > > @@ -1035,66 +1035,6 @@ int tpm_send(u32 chip_num, void *cmd, size_t > > buflen) > > > } > > > EXPORT_SYMBOL_GPL(tpm_send); > > > > > > -static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > > > - bool check_cancel, bool *canceled) > > > -{ > > > - u8 status = chip->ops->status(chip); > > > - > > > - *canceled = false; > > > - if ((status & mask) == mask) > > > - return true; > > > - if (check_cancel && chip->ops->req_canceled(chip, status)) { > > > - *canceled = true; > > > - return true; > > > - } > > > - return false; > > > -} > > > - > > > -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long > > timeout, > > > - wait_queue_head_t *queue, bool check_cancel) > > > -{ > > > - unsigned long stop; > > > - long rc; > > > - u8 status; > > > - bool canceled = false; > > > - > > > - /* check current status */ > > > - status = chip->ops->status(chip); > > > - if ((status & mask) == mask) > > > - return 0; > > > - > > > - stop = jiffies + timeout; > > > - > > > - if (chip->flags & TPM_CHIP_FLAG_IRQ) { > > > -again: > > > - timeout = stop - jiffies; > > > - if ((long)timeout <= 0) > > > - return -ETIME; > > > - rc = wait_event_interruptible_timeout(*queue, > > > - wait_for_tpm_stat_cond(chip, mask, check_cancel, > > > - &canceled), > > > - timeout); > > > - if (rc > 0) { > > > - if (canceled) > > > - return -ECANCELED; > > > - return 0; > > > - } > > > - if (rc == -ERESTARTSYS && freezing(current)) { > > > - clear_thread_flag(TIF_SIGPENDING); > > > - goto again; > > > - } > > > - } else { > > > - do { > > > - tpm_msleep(TPM_TIMEOUT); > > > - status = chip->ops->status(chip); > > > - if ((status & mask) == mask) > > > - return 0; > > > - } while (time_before(jiffies, stop)); > > > - } > > > - return -ETIME; > > > -} > > > -EXPORT_SYMBOL_GPL(wait_for_tpm_stat); > > > - > > > #define TPM_ORD_SAVESTATE 152 > > > #define SAVESTATE_RESULT_SIZE 10 > > > > > > diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h > > > index 2d5466a72e40..4fc83ac7abeb 100644 > > > --- a/drivers/char/tpm/tpm.h > > > +++ b/drivers/char/tpm/tpm.h > > > @@ -525,8 +525,6 @@ int tpm_do_selftest(struct tpm_chip *chip); > > > unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 > > ordinal); > > > int tpm_pm_suspend(struct device *dev); > > > int tpm_pm_resume(struct device *dev); > > > -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long > > timeout, > > > - wait_queue_head_t *queue, bool check_cancel); > > > > > > static inline void tpm_msleep(unsigned int delay_msec) > > > { > > > diff --git a/drivers/char/tpm/tpm_tis_core.c > > b/drivers/char/tpm/tpm_tis_core.c > > > index 63bc6c3b949e..b33126a35694 100644 > > > --- a/drivers/char/tpm/tpm_tis_core.c > > > +++ b/drivers/char/tpm/tpm_tis_core.c > > > @@ -31,6 +31,66 @@ > > > #include "tpm.h" > > > #include "tpm_tis_core.h" > > > > > > +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > > > + bool check_cancel, bool *canceled) > > > +{ > > > + u8 status = chip->ops->status(chip); > > > + > > > + *canceled = false; > > > + if ((status & mask) == mask) > > > + return true; > > > + if (check_cancel && chip->ops->req_canceled(chip, status)) { > > > + *canceled = true; > > > + return true; > > > + } > > > + return false; > > > +} > > > + > > > +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, > > > + unsigned long timeout, wait_queue_head_t *queue, > > > + bool check_cancel) > > > +{ > > > + unsigned long stop; > > > + long rc; > > > + u8 status; > > > + bool canceled = false; > > > + > > > + /* check current status */ > > > + status = chip->ops->status(chip); > > > + if ((status & mask) == mask) > > > + return 0; > > > + > > > + stop = jiffies + timeout; > > > + > > > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > > > +again: > > > + timeout = stop - jiffies; > > > + if ((long)timeout <= 0) > > > + return -ETIME; > > > + rc = wait_event_interruptible_timeout(*queue, > > > + wait_for_tpm_stat_cond(chip, mask, check_cancel, > > > + &canceled), > > > + timeout); > > > + if (rc > 0) { > > > + if (canceled) > > > + return -ECANCELED; > > > + return 0; > > > + } > > > + if (rc == -ERESTARTSYS && freezing(current)) { > > > + clear_thread_flag(TIF_SIGPENDING); > > > + goto again; > > > + } > > > + } else { > > > + do { > > > + tpm_msleep(TPM_TIMEOUT); > > > + status = chip->ops->status(chip); > > > + if ((status & mask) == mask) > > > + return 0; > > > + } while (time_before(jiffies, stop)); > > > + } > > > + return -ETIME; > > > +} > > > + > > > /* Before we attempt to access the TPM we must see that the valid bit is > > set. > > > * The specification says that this bit is 0 at reset and remains 0 until the > > > * 'TPM has gone through its self test and initialization and has established > > > diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen- > > tpmfront.c > > > index 656e8af95d52..d20a0a9ded27 100644 > > > --- a/drivers/char/tpm/xen-tpmfront.c > > > +++ b/drivers/char/tpm/xen-tpmfront.c > > > @@ -39,6 +39,66 @@ enum status_bits { > > > VTPM_STATUS_CANCELED = 0x8, > > > }; > > > > > > +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > > > + bool check_cancel, bool *canceled) > > > +{ > > > + u8 status = chip->ops->status(chip); > > > + > > > + *canceled = false; > > > + if ((status & mask) == mask) > > > + return true; > > > + if (check_cancel && chip->ops->req_canceled(chip, status)) { > > > + *canceled = true; > > > + return true; > > > + } > > > + return false; > > > +} > > > + > > > +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, > > > + unsigned long timeout, wait_queue_head_t *queue, > > > + bool check_cancel) > > > +{ > > > + unsigned long stop; > > > + long rc; > > > + u8 status; > > > + bool canceled = false; > > > + > > > + /* check current status */ > > > + status = chip->ops->status(chip); > > > + if ((status & mask) == mask) > > > + return 0; > > > + > > > + stop = jiffies + timeout; > > > + > > > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > > > +again: > > > + timeout = stop - jiffies; > > > + if ((long)timeout <= 0) > > > + return -ETIME; > > > + rc = wait_event_interruptible_timeout(*queue, > > > + wait_for_tpm_stat_cond(chip, mask, check_cancel, > > > + &canceled), > > > + timeout); > > > + if (rc > 0) { > > > + if (canceled) > > > + return -ECANCELED; > > > + return 0; > > > + } > > > + if (rc == -ERESTARTSYS && freezing(current)) { > > > + clear_thread_flag(TIF_SIGPENDING); > > > + goto again; > > > + } > > > + } else { > > > + do { > > > + tpm_msleep(TPM_TIMEOUT); > > > + status = chip->ops->status(chip); > > > + if ((status & mask) == mask) > > > + return 0; > > > + } while (time_before(jiffies, stop)); > > > + } > > > + return -ETIME; > > > +} > > > + > > > static u8 vtpm_status(struct tpm_chip *chip) > > > { > > > struct tpm_private *priv = dev_get_drvdata(&chip->dev); > > > -- > > > 2.13.3 > > > > > > > This commit caused a compiler warning because freezer.h was not included > > to xen-tpmfront.c. I manually fixed it. > > Yep, and checkpatch.pl still complains about some stuff (mostly > whitespace) in both patch 1/4 and 2/4. When fixed patches are > available, I can run them again through my automation. > Alexander I'll fix these manually (weird, I run sparse and checkpatch, must have done some mistake). Thank you! /Jarkko -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 10/20/2017 02:26 PM, Jarkko Sakkinen wrote: > On Thu, Oct 19, 2017 at 05:00:29PM +0000, Alexander.Steffen@infineon.com wrote: >>> On Tue, Oct 17, 2017 at 04:32:29PM -0400, Nayna Jain wrote: >>>> The function wait_for_tpm_stat() is currently defined in >>>> tpm-interface file. It is a hardware specific function used >>>> only by tpm_tis and xen-tpmfront, so it is removed from >>>> tpm-interface.c and defined in respective driver files. >>>> >>>> Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> >>>> Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com> >>>> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> >>>> --- >>>> drivers/char/tpm/tpm-interface.c | 60 ---------------------------------------- >>>> drivers/char/tpm/tpm.h | 2 -- >>>> drivers/char/tpm/tpm_tis_core.c | 60 >>> ++++++++++++++++++++++++++++++++++++++++ >>>> drivers/char/tpm/xen-tpmfront.c | 60 >>> ++++++++++++++++++++++++++++++++++++++++ >>>> 4 files changed, 120 insertions(+), 62 deletions(-) >>>> >>>> diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm- >>> interface.c >>>> index 1d6729be4cd6..313f7618d569 100644 >>>> --- a/drivers/char/tpm/tpm-interface.c >>>> +++ b/drivers/char/tpm/tpm-interface.c >>>> @@ -1035,66 +1035,6 @@ int tpm_send(u32 chip_num, void *cmd, size_t >>> buflen) >>>> } >>>> EXPORT_SYMBOL_GPL(tpm_send); >>>> >>>> -static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, >>>> - bool check_cancel, bool *canceled) >>>> -{ >>>> - u8 status = chip->ops->status(chip); >>>> - >>>> - *canceled = false; >>>> - if ((status & mask) == mask) >>>> - return true; >>>> - if (check_cancel && chip->ops->req_canceled(chip, status)) { >>>> - *canceled = true; >>>> - return true; >>>> - } >>>> - return false; >>>> -} >>>> - >>>> -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long >>> timeout, >>>> - wait_queue_head_t *queue, bool check_cancel) >>>> -{ >>>> - unsigned long stop; >>>> - long rc; >>>> - u8 status; >>>> - bool canceled = false; >>>> - >>>> - /* check current status */ >>>> - status = chip->ops->status(chip); >>>> - if ((status & mask) == mask) >>>> - return 0; >>>> - >>>> - stop = jiffies + timeout; >>>> - >>>> - if (chip->flags & TPM_CHIP_FLAG_IRQ) { >>>> -again: >>>> - timeout = stop - jiffies; >>>> - if ((long)timeout <= 0) >>>> - return -ETIME; >>>> - rc = wait_event_interruptible_timeout(*queue, >>>> - wait_for_tpm_stat_cond(chip, mask, check_cancel, >>>> - &canceled), >>>> - timeout); >>>> - if (rc > 0) { >>>> - if (canceled) >>>> - return -ECANCELED; >>>> - return 0; >>>> - } >>>> - if (rc == -ERESTARTSYS && freezing(current)) { >>>> - clear_thread_flag(TIF_SIGPENDING); >>>> - goto again; >>>> - } >>>> - } else { >>>> - do { >>>> - tpm_msleep(TPM_TIMEOUT); >>>> - status = chip->ops->status(chip); >>>> - if ((status & mask) == mask) >>>> - return 0; >>>> - } while (time_before(jiffies, stop)); >>>> - } >>>> - return -ETIME; >>>> -} >>>> -EXPORT_SYMBOL_GPL(wait_for_tpm_stat); >>>> - >>>> #define TPM_ORD_SAVESTATE 152 >>>> #define SAVESTATE_RESULT_SIZE 10 >>>> >>>> diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h >>>> index 2d5466a72e40..4fc83ac7abeb 100644 >>>> --- a/drivers/char/tpm/tpm.h >>>> +++ b/drivers/char/tpm/tpm.h >>>> @@ -525,8 +525,6 @@ int tpm_do_selftest(struct tpm_chip *chip); >>>> unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 >>> ordinal); >>>> int tpm_pm_suspend(struct device *dev); >>>> int tpm_pm_resume(struct device *dev); >>>> -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long >>> timeout, >>>> - wait_queue_head_t *queue, bool check_cancel); >>>> >>>> static inline void tpm_msleep(unsigned int delay_msec) >>>> { >>>> diff --git a/drivers/char/tpm/tpm_tis_core.c >>> b/drivers/char/tpm/tpm_tis_core.c >>>> index 63bc6c3b949e..b33126a35694 100644 >>>> --- a/drivers/char/tpm/tpm_tis_core.c >>>> +++ b/drivers/char/tpm/tpm_tis_core.c >>>> @@ -31,6 +31,66 @@ >>>> #include "tpm.h" >>>> #include "tpm_tis_core.h" >>>> >>>> +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, >>>> + bool check_cancel, bool *canceled) >>>> +{ >>>> + u8 status = chip->ops->status(chip); >>>> + >>>> + *canceled = false; >>>> + if ((status & mask) == mask) >>>> + return true; >>>> + if (check_cancel && chip->ops->req_canceled(chip, status)) { >>>> + *canceled = true; >>>> + return true; >>>> + } >>>> + return false; >>>> +} >>>> + >>>> +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, >>>> + unsigned long timeout, wait_queue_head_t *queue, >>>> + bool check_cancel) >>>> +{ >>>> + unsigned long stop; >>>> + long rc; >>>> + u8 status; >>>> + bool canceled = false; >>>> + >>>> + /* check current status */ >>>> + status = chip->ops->status(chip); >>>> + if ((status & mask) == mask) >>>> + return 0; >>>> + >>>> + stop = jiffies + timeout; >>>> + >>>> + if (chip->flags & TPM_CHIP_FLAG_IRQ) { >>>> +again: >>>> + timeout = stop - jiffies; >>>> + if ((long)timeout <= 0) >>>> + return -ETIME; >>>> + rc = wait_event_interruptible_timeout(*queue, >>>> + wait_for_tpm_stat_cond(chip, mask, check_cancel, >>>> + &canceled), >>>> + timeout); >>>> + if (rc > 0) { >>>> + if (canceled) >>>> + return -ECANCELED; >>>> + return 0; >>>> + } >>>> + if (rc == -ERESTARTSYS && freezing(current)) { >>>> + clear_thread_flag(TIF_SIGPENDING); >>>> + goto again; >>>> + } >>>> + } else { >>>> + do { >>>> + tpm_msleep(TPM_TIMEOUT); >>>> + status = chip->ops->status(chip); >>>> + if ((status & mask) == mask) >>>> + return 0; >>>> + } while (time_before(jiffies, stop)); >>>> + } >>>> + return -ETIME; >>>> +} >>>> + >>>> /* Before we attempt to access the TPM we must see that the valid bit is >>> set. >>>> * The specification says that this bit is 0 at reset and remains 0 until the >>>> * 'TPM has gone through its self test and initialization and has established >>>> diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen- >>> tpmfront.c >>>> index 656e8af95d52..d20a0a9ded27 100644 >>>> --- a/drivers/char/tpm/xen-tpmfront.c >>>> +++ b/drivers/char/tpm/xen-tpmfront.c >>>> @@ -39,6 +39,66 @@ enum status_bits { >>>> VTPM_STATUS_CANCELED = 0x8, >>>> }; >>>> >>>> +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, >>>> + bool check_cancel, bool *canceled) >>>> +{ >>>> + u8 status = chip->ops->status(chip); >>>> + >>>> + *canceled = false; >>>> + if ((status & mask) == mask) >>>> + return true; >>>> + if (check_cancel && chip->ops->req_canceled(chip, status)) { >>>> + *canceled = true; >>>> + return true; >>>> + } >>>> + return false; >>>> +} >>>> + >>>> +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, >>>> + unsigned long timeout, wait_queue_head_t *queue, >>>> + bool check_cancel) >>>> +{ >>>> + unsigned long stop; >>>> + long rc; >>>> + u8 status; >>>> + bool canceled = false; >>>> + >>>> + /* check current status */ >>>> + status = chip->ops->status(chip); >>>> + if ((status & mask) == mask) >>>> + return 0; >>>> + >>>> + stop = jiffies + timeout; >>>> + >>>> + if (chip->flags & TPM_CHIP_FLAG_IRQ) { >>>> +again: >>>> + timeout = stop - jiffies; >>>> + if ((long)timeout <= 0) >>>> + return -ETIME; >>>> + rc = wait_event_interruptible_timeout(*queue, >>>> + wait_for_tpm_stat_cond(chip, mask, check_cancel, >>>> + &canceled), >>>> + timeout); >>>> + if (rc > 0) { >>>> + if (canceled) >>>> + return -ECANCELED; >>>> + return 0; >>>> + } >>>> + if (rc == -ERESTARTSYS && freezing(current)) { >>>> + clear_thread_flag(TIF_SIGPENDING); >>>> + goto again; >>>> + } >>>> + } else { >>>> + do { >>>> + tpm_msleep(TPM_TIMEOUT); >>>> + status = chip->ops->status(chip); >>>> + if ((status & mask) == mask) >>>> + return 0; >>>> + } while (time_before(jiffies, stop)); >>>> + } >>>> + return -ETIME; >>>> +} >>>> + >>>> static u8 vtpm_status(struct tpm_chip *chip) >>>> { >>>> struct tpm_private *priv = dev_get_drvdata(&chip->dev); >>>> -- >>>> 2.13.3 >>>> >>> This commit caused a compiler warning because freezer.h was not included >>> to xen-tpmfront.c. I manually fixed it. >> Yep, and checkpatch.pl still complains about some stuff (mostly >> whitespace) in both patch 1/4 and 2/4. When fixed patches are >> available, I can run them again through my automation. >> Alexander Sorry for delay in response.. I was on vacation for last few days. Thanks for informing. I am wondering these didn't show up when I ran checkpatch.pl. > I'll fix these manually (weird, I run sparse and checkpatch, must have > done some mistake). Thanks Jarkko. Thanks & Regards, - Nayna > Thank you! > > /Jarkko > -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, Oct 23, 2017 at 07:02:18PM +0530, Nayna Jain wrote: > > > On 10/20/2017 02:26 PM, Jarkko Sakkinen wrote: > > On Thu, Oct 19, 2017 at 05:00:29PM +0000, Alexander.Steffen@infineon.com wrote: > > > > On Tue, Oct 17, 2017 at 04:32:29PM -0400, Nayna Jain wrote: > > > > > The function wait_for_tpm_stat() is currently defined in > > > > > tpm-interface file. It is a hardware specific function used > > > > > only by tpm_tis and xen-tpmfront, so it is removed from > > > > > tpm-interface.c and defined in respective driver files. > > > > > > > > > > Suggested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > > > > > Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com> > > > > > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> > > > > > --- > > > > > drivers/char/tpm/tpm-interface.c | 60 ---------------------------------------- > > > > > drivers/char/tpm/tpm.h | 2 -- > > > > > drivers/char/tpm/tpm_tis_core.c | 60 > > > > ++++++++++++++++++++++++++++++++++++++++ > > > > > drivers/char/tpm/xen-tpmfront.c | 60 > > > > ++++++++++++++++++++++++++++++++++++++++ > > > > > 4 files changed, 120 insertions(+), 62 deletions(-) > > > > > > > > > > diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm- > > > > interface.c > > > > > index 1d6729be4cd6..313f7618d569 100644 > > > > > --- a/drivers/char/tpm/tpm-interface.c > > > > > +++ b/drivers/char/tpm/tpm-interface.c > > > > > @@ -1035,66 +1035,6 @@ int tpm_send(u32 chip_num, void *cmd, size_t > > > > buflen) > > > > > } > > > > > EXPORT_SYMBOL_GPL(tpm_send); > > > > > > > > > > -static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > > > > > - bool check_cancel, bool *canceled) > > > > > -{ > > > > > - u8 status = chip->ops->status(chip); > > > > > - > > > > > - *canceled = false; > > > > > - if ((status & mask) == mask) > > > > > - return true; > > > > > - if (check_cancel && chip->ops->req_canceled(chip, status)) { > > > > > - *canceled = true; > > > > > - return true; > > > > > - } > > > > > - return false; > > > > > -} > > > > > - > > > > > -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long > > > > timeout, > > > > > - wait_queue_head_t *queue, bool check_cancel) > > > > > -{ > > > > > - unsigned long stop; > > > > > - long rc; > > > > > - u8 status; > > > > > - bool canceled = false; > > > > > - > > > > > - /* check current status */ > > > > > - status = chip->ops->status(chip); > > > > > - if ((status & mask) == mask) > > > > > - return 0; > > > > > - > > > > > - stop = jiffies + timeout; > > > > > - > > > > > - if (chip->flags & TPM_CHIP_FLAG_IRQ) { > > > > > -again: > > > > > - timeout = stop - jiffies; > > > > > - if ((long)timeout <= 0) > > > > > - return -ETIME; > > > > > - rc = wait_event_interruptible_timeout(*queue, > > > > > - wait_for_tpm_stat_cond(chip, mask, check_cancel, > > > > > - &canceled), > > > > > - timeout); > > > > > - if (rc > 0) { > > > > > - if (canceled) > > > > > - return -ECANCELED; > > > > > - return 0; > > > > > - } > > > > > - if (rc == -ERESTARTSYS && freezing(current)) { > > > > > - clear_thread_flag(TIF_SIGPENDING); > > > > > - goto again; > > > > > - } > > > > > - } else { > > > > > - do { > > > > > - tpm_msleep(TPM_TIMEOUT); > > > > > - status = chip->ops->status(chip); > > > > > - if ((status & mask) == mask) > > > > > - return 0; > > > > > - } while (time_before(jiffies, stop)); > > > > > - } > > > > > - return -ETIME; > > > > > -} > > > > > -EXPORT_SYMBOL_GPL(wait_for_tpm_stat); > > > > > - > > > > > #define TPM_ORD_SAVESTATE 152 > > > > > #define SAVESTATE_RESULT_SIZE 10 > > > > > > > > > > diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h > > > > > index 2d5466a72e40..4fc83ac7abeb 100644 > > > > > --- a/drivers/char/tpm/tpm.h > > > > > +++ b/drivers/char/tpm/tpm.h > > > > > @@ -525,8 +525,6 @@ int tpm_do_selftest(struct tpm_chip *chip); > > > > > unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 > > > > ordinal); > > > > > int tpm_pm_suspend(struct device *dev); > > > > > int tpm_pm_resume(struct device *dev); > > > > > -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long > > > > timeout, > > > > > - wait_queue_head_t *queue, bool check_cancel); > > > > > > > > > > static inline void tpm_msleep(unsigned int delay_msec) > > > > > { > > > > > diff --git a/drivers/char/tpm/tpm_tis_core.c > > > > b/drivers/char/tpm/tpm_tis_core.c > > > > > index 63bc6c3b949e..b33126a35694 100644 > > > > > --- a/drivers/char/tpm/tpm_tis_core.c > > > > > +++ b/drivers/char/tpm/tpm_tis_core.c > > > > > @@ -31,6 +31,66 @@ > > > > > #include "tpm.h" > > > > > #include "tpm_tis_core.h" > > > > > > > > > > +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > > > > > + bool check_cancel, bool *canceled) > > > > > +{ > > > > > + u8 status = chip->ops->status(chip); > > > > > + > > > > > + *canceled = false; > > > > > + if ((status & mask) == mask) > > > > > + return true; > > > > > + if (check_cancel && chip->ops->req_canceled(chip, status)) { > > > > > + *canceled = true; > > > > > + return true; > > > > > + } > > > > > + return false; > > > > > +} > > > > > + > > > > > +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, > > > > > + unsigned long timeout, wait_queue_head_t *queue, > > > > > + bool check_cancel) > > > > > +{ > > > > > + unsigned long stop; > > > > > + long rc; > > > > > + u8 status; > > > > > + bool canceled = false; > > > > > + > > > > > + /* check current status */ > > > > > + status = chip->ops->status(chip); > > > > > + if ((status & mask) == mask) > > > > > + return 0; > > > > > + > > > > > + stop = jiffies + timeout; > > > > > + > > > > > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > > > > > +again: > > > > > + timeout = stop - jiffies; > > > > > + if ((long)timeout <= 0) > > > > > + return -ETIME; > > > > > + rc = wait_event_interruptible_timeout(*queue, > > > > > + wait_for_tpm_stat_cond(chip, mask, check_cancel, > > > > > + &canceled), > > > > > + timeout); > > > > > + if (rc > 0) { > > > > > + if (canceled) > > > > > + return -ECANCELED; > > > > > + return 0; > > > > > + } > > > > > + if (rc == -ERESTARTSYS && freezing(current)) { > > > > > + clear_thread_flag(TIF_SIGPENDING); > > > > > + goto again; > > > > > + } > > > > > + } else { > > > > > + do { > > > > > + tpm_msleep(TPM_TIMEOUT); > > > > > + status = chip->ops->status(chip); > > > > > + if ((status & mask) == mask) > > > > > + return 0; > > > > > + } while (time_before(jiffies, stop)); > > > > > + } > > > > > + return -ETIME; > > > > > +} > > > > > + > > > > > /* Before we attempt to access the TPM we must see that the valid bit is > > > > set. > > > > > * The specification says that this bit is 0 at reset and remains 0 until the > > > > > * 'TPM has gone through its self test and initialization and has established > > > > > diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen- > > > > tpmfront.c > > > > > index 656e8af95d52..d20a0a9ded27 100644 > > > > > --- a/drivers/char/tpm/xen-tpmfront.c > > > > > +++ b/drivers/char/tpm/xen-tpmfront.c > > > > > @@ -39,6 +39,66 @@ enum status_bits { > > > > > VTPM_STATUS_CANCELED = 0x8, > > > > > }; > > > > > > > > > > +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, > > > > > + bool check_cancel, bool *canceled) > > > > > +{ > > > > > + u8 status = chip->ops->status(chip); > > > > > + > > > > > + *canceled = false; > > > > > + if ((status & mask) == mask) > > > > > + return true; > > > > > + if (check_cancel && chip->ops->req_canceled(chip, status)) { > > > > > + *canceled = true; > > > > > + return true; > > > > > + } > > > > > + return false; > > > > > +} > > > > > + > > > > > +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, > > > > > + unsigned long timeout, wait_queue_head_t *queue, > > > > > + bool check_cancel) > > > > > +{ > > > > > + unsigned long stop; > > > > > + long rc; > > > > > + u8 status; > > > > > + bool canceled = false; > > > > > + > > > > > + /* check current status */ > > > > > + status = chip->ops->status(chip); > > > > > + if ((status & mask) == mask) > > > > > + return 0; > > > > > + > > > > > + stop = jiffies + timeout; > > > > > + > > > > > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > > > > > +again: > > > > > + timeout = stop - jiffies; > > > > > + if ((long)timeout <= 0) > > > > > + return -ETIME; > > > > > + rc = wait_event_interruptible_timeout(*queue, > > > > > + wait_for_tpm_stat_cond(chip, mask, check_cancel, > > > > > + &canceled), > > > > > + timeout); > > > > > + if (rc > 0) { > > > > > + if (canceled) > > > > > + return -ECANCELED; > > > > > + return 0; > > > > > + } > > > > > + if (rc == -ERESTARTSYS && freezing(current)) { > > > > > + clear_thread_flag(TIF_SIGPENDING); > > > > > + goto again; > > > > > + } > > > > > + } else { > > > > > + do { > > > > > + tpm_msleep(TPM_TIMEOUT); > > > > > + status = chip->ops->status(chip); > > > > > + if ((status & mask) == mask) > > > > > + return 0; > > > > > + } while (time_before(jiffies, stop)); > > > > > + } > > > > > + return -ETIME; > > > > > +} > > > > > + > > > > > static u8 vtpm_status(struct tpm_chip *chip) > > > > > { > > > > > struct tpm_private *priv = dev_get_drvdata(&chip->dev); > > > > > -- > > > > > 2.13.3 > > > > > > > > > This commit caused a compiler warning because freezer.h was not included > > > > to xen-tpmfront.c. I manually fixed it. > > > Yep, and checkpatch.pl still complains about some stuff (mostly > > > whitespace) in both patch 1/4 and 2/4. When fixed patches are > > > available, I can run them again through my automation. > > > Alexander > > Sorry for delay in response.. I was on vacation for last few days. > Thanks for informing. I am wondering these didn't show up when I ran > checkpatch.pl. I also did run checkpatch.pl. Haven't had time to recheck yet but I will do that since there's always chance for human error. /Jarkko -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index 1d6729be4cd6..313f7618d569 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -1035,66 +1035,6 @@ int tpm_send(u32 chip_num, void *cmd, size_t buflen) } EXPORT_SYMBOL_GPL(tpm_send); -static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, - bool check_cancel, bool *canceled) -{ - u8 status = chip->ops->status(chip); - - *canceled = false; - if ((status & mask) == mask) - return true; - if (check_cancel && chip->ops->req_canceled(chip, status)) { - *canceled = true; - return true; - } - return false; -} - -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, - wait_queue_head_t *queue, bool check_cancel) -{ - unsigned long stop; - long rc; - u8 status; - bool canceled = false; - - /* check current status */ - status = chip->ops->status(chip); - if ((status & mask) == mask) - return 0; - - stop = jiffies + timeout; - - if (chip->flags & TPM_CHIP_FLAG_IRQ) { -again: - timeout = stop - jiffies; - if ((long)timeout <= 0) - return -ETIME; - rc = wait_event_interruptible_timeout(*queue, - wait_for_tpm_stat_cond(chip, mask, check_cancel, - &canceled), - timeout); - if (rc > 0) { - if (canceled) - return -ECANCELED; - return 0; - } - if (rc == -ERESTARTSYS && freezing(current)) { - clear_thread_flag(TIF_SIGPENDING); - goto again; - } - } else { - do { - tpm_msleep(TPM_TIMEOUT); - status = chip->ops->status(chip); - if ((status & mask) == mask) - return 0; - } while (time_before(jiffies, stop)); - } - return -ETIME; -} -EXPORT_SYMBOL_GPL(wait_for_tpm_stat); - #define TPM_ORD_SAVESTATE 152 #define SAVESTATE_RESULT_SIZE 10 diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 2d5466a72e40..4fc83ac7abeb 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -525,8 +525,6 @@ int tpm_do_selftest(struct tpm_chip *chip); unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); int tpm_pm_suspend(struct device *dev); int tpm_pm_resume(struct device *dev); -int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, - wait_queue_head_t *queue, bool check_cancel); static inline void tpm_msleep(unsigned int delay_msec) { diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index 63bc6c3b949e..b33126a35694 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -31,6 +31,66 @@ #include "tpm.h" #include "tpm_tis_core.h" +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, + bool check_cancel, bool *canceled) +{ + u8 status = chip->ops->status(chip); + + *canceled = false; + if ((status & mask) == mask) + return true; + if (check_cancel && chip->ops->req_canceled(chip, status)) { + *canceled = true; + return true; + } + return false; +} + +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, + unsigned long timeout, wait_queue_head_t *queue, + bool check_cancel) +{ + unsigned long stop; + long rc; + u8 status; + bool canceled = false; + + /* check current status */ + status = chip->ops->status(chip); + if ((status & mask) == mask) + return 0; + + stop = jiffies + timeout; + + if (chip->flags & TPM_CHIP_FLAG_IRQ) { +again: + timeout = stop - jiffies; + if ((long)timeout <= 0) + return -ETIME; + rc = wait_event_interruptible_timeout(*queue, + wait_for_tpm_stat_cond(chip, mask, check_cancel, + &canceled), + timeout); + if (rc > 0) { + if (canceled) + return -ECANCELED; + return 0; + } + if (rc == -ERESTARTSYS && freezing(current)) { + clear_thread_flag(TIF_SIGPENDING); + goto again; + } + } else { + do { + tpm_msleep(TPM_TIMEOUT); + status = chip->ops->status(chip); + if ((status & mask) == mask) + return 0; + } while (time_before(jiffies, stop)); + } + return -ETIME; +} + /* Before we attempt to access the TPM we must see that the valid bit is set. * The specification says that this bit is 0 at reset and remains 0 until the * 'TPM has gone through its self test and initialization and has established diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c index 656e8af95d52..d20a0a9ded27 100644 --- a/drivers/char/tpm/xen-tpmfront.c +++ b/drivers/char/tpm/xen-tpmfront.c @@ -39,6 +39,66 @@ enum status_bits { VTPM_STATUS_CANCELED = 0x8, }; +static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask, + bool check_cancel, bool *canceled) +{ + u8 status = chip->ops->status(chip); + + *canceled = false; + if ((status & mask) == mask) + return true; + if (check_cancel && chip->ops->req_canceled(chip, status)) { + *canceled = true; + return true; + } + return false; +} + +static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, + unsigned long timeout, wait_queue_head_t *queue, + bool check_cancel) +{ + unsigned long stop; + long rc; + u8 status; + bool canceled = false; + + /* check current status */ + status = chip->ops->status(chip); + if ((status & mask) == mask) + return 0; + + stop = jiffies + timeout; + + if (chip->flags & TPM_CHIP_FLAG_IRQ) { +again: + timeout = stop - jiffies; + if ((long)timeout <= 0) + return -ETIME; + rc = wait_event_interruptible_timeout(*queue, + wait_for_tpm_stat_cond(chip, mask, check_cancel, + &canceled), + timeout); + if (rc > 0) { + if (canceled) + return -ECANCELED; + return 0; + } + if (rc == -ERESTARTSYS && freezing(current)) { + clear_thread_flag(TIF_SIGPENDING); + goto again; + } + } else { + do { + tpm_msleep(TPM_TIMEOUT); + status = chip->ops->status(chip); + if ((status & mask) == mask) + return 0; + } while (time_before(jiffies, stop)); + } + return -ETIME; +} + static u8 vtpm_status(struct tpm_chip *chip) { struct tpm_private *priv = dev_get_drvdata(&chip->dev);