| Message ID | 20220120134326.5295-2-sbinding@opensource.cirrus.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Support Spi in i2c-multi-instantiate driver | expand |
Hi, On 1/20/22 14:43, Stefan Binding wrote: > This functions were previously made private since they > were not used. However, these functions will be needed > again. > > Partial revert of commit da21fde0fdb3 > ("spi: Make several public functions private to spi.c") > > Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com> Thanks, patch looks good to me: Reviewed-by: Hans de Goede <hdegoede@redhat.com> Regards, Hans > --- > drivers/spi/spi.c | 6 ++++-- > include/linux/spi/spi.h | 12 ++++++++++++ > 2 files changed, 16 insertions(+), 2 deletions(-) > > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c > index 4599b121d744..1eb84101c4ad 100644 > --- a/drivers/spi/spi.c > +++ b/drivers/spi/spi.c > @@ -532,7 +532,7 @@ static DEFINE_MUTEX(board_lock); > * > * Return: a pointer to the new device, or NULL. > */ > -static struct spi_device *spi_alloc_device(struct spi_controller *ctlr) > +struct spi_device *spi_alloc_device(struct spi_controller *ctlr) > { > struct spi_device *spi; > > @@ -557,6 +557,7 @@ static struct spi_device *spi_alloc_device(struct spi_controller *ctlr) > device_initialize(&spi->dev); > return spi; > } > +EXPORT_SYMBOL_GPL(spi_alloc_device); > > static void spi_dev_set_name(struct spi_device *spi) > { > @@ -652,7 +653,7 @@ static int __spi_add_device(struct spi_device *spi) > * > * Return: 0 on success; negative errno on failure > */ > -static int spi_add_device(struct spi_device *spi) > +int spi_add_device(struct spi_device *spi) > { > struct spi_controller *ctlr = spi->controller; > struct device *dev = ctlr->dev.parent; > @@ -673,6 +674,7 @@ static int spi_add_device(struct spi_device *spi) > mutex_unlock(&ctlr->add_lock); > return status; > } > +EXPORT_SYMBOL_GPL(spi_add_device); > > static int spi_add_device_locked(struct spi_device *spi) > { > diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h > index 7ab3fed7b804..0346a3ff27fd 100644 > --- a/include/linux/spi/spi.h > +++ b/include/linux/spi/spi.h > @@ -1452,7 +1452,19 @@ spi_register_board_info(struct spi_board_info const *info, unsigned n) > * use spi_new_device() to describe each device. You can also call > * spi_unregister_device() to start making that device vanish, but > * normally that would be handled by spi_unregister_controller(). > + * > + * You can also use spi_alloc_device() and spi_add_device() to use a two > + * stage registration sequence for each spi_device. This gives the caller > + * some more control over the spi_device structure before it is registered, > + * but requires that caller to initialize fields that would otherwise > + * be defined using the board info. > */ > +extern struct spi_device * > +spi_alloc_device(struct spi_controller *ctlr); > + > +extern int > +spi_add_device(struct spi_device *spi); > + > extern struct spi_device * > spi_new_device(struct spi_controller *, struct spi_board_info *); > >
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 4599b121d744..1eb84101c4ad 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -532,7 +532,7 @@ static DEFINE_MUTEX(board_lock); * * Return: a pointer to the new device, or NULL. */ -static struct spi_device *spi_alloc_device(struct spi_controller *ctlr) +struct spi_device *spi_alloc_device(struct spi_controller *ctlr) { struct spi_device *spi; @@ -557,6 +557,7 @@ static struct spi_device *spi_alloc_device(struct spi_controller *ctlr) device_initialize(&spi->dev); return spi; } +EXPORT_SYMBOL_GPL(spi_alloc_device); static void spi_dev_set_name(struct spi_device *spi) { @@ -652,7 +653,7 @@ static int __spi_add_device(struct spi_device *spi) * * Return: 0 on success; negative errno on failure */ -static int spi_add_device(struct spi_device *spi) +int spi_add_device(struct spi_device *spi) { struct spi_controller *ctlr = spi->controller; struct device *dev = ctlr->dev.parent; @@ -673,6 +674,7 @@ static int spi_add_device(struct spi_device *spi) mutex_unlock(&ctlr->add_lock); return status; } +EXPORT_SYMBOL_GPL(spi_add_device); static int spi_add_device_locked(struct spi_device *spi) { diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 7ab3fed7b804..0346a3ff27fd 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -1452,7 +1452,19 @@ spi_register_board_info(struct spi_board_info const *info, unsigned n) * use spi_new_device() to describe each device. You can also call * spi_unregister_device() to start making that device vanish, but * normally that would be handled by spi_unregister_controller(). + * + * You can also use spi_alloc_device() and spi_add_device() to use a two + * stage registration sequence for each spi_device. This gives the caller + * some more control over the spi_device structure before it is registered, + * but requires that caller to initialize fields that would otherwise + * be defined using the board info. */ +extern struct spi_device * +spi_alloc_device(struct spi_controller *ctlr); + +extern int +spi_add_device(struct spi_device *spi); + extern struct spi_device * spi_new_device(struct spi_controller *, struct spi_board_info *);
This functions were previously made private since they were not used. However, these functions will be needed again. Partial revert of commit da21fde0fdb3 ("spi: Make several public functions private to spi.c") Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com> --- drivers/spi/spi.c | 6 ++++-- include/linux/spi/spi.h | 12 ++++++++++++ 2 files changed, 16 insertions(+), 2 deletions(-)