| Message ID | 1463647662-27426-2-git-send-email-chaotian.jing@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 19 May 2016 at 10:47, Chaotian Jing <chaotian.jing@mediatek.com> wrote: > some MMC host do not support MMC_CAP_WAIT_WHILE_BUSY but provides > ops->card_busy(), So, add this method to check card status after > switch command. > > Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> Thanks, applied for next! (With some minor updates to the change log) Kind regards Uffe > --- > drivers/mmc/core/mmc_ops.c | 25 ++++++++++++++++--------- > 1 file changed, 16 insertions(+), 9 deletions(-) > > diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c > index 62355bd..32de144 100644 > --- a/drivers/mmc/core/mmc_ops.c > +++ b/drivers/mmc/core/mmc_ops.c > @@ -480,6 +480,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, > u32 status = 0; > bool use_r1b_resp = use_busy_signal; > bool expired = false; > + bool busy = false; > > mmc_retune_hold(host); > > @@ -535,19 +536,24 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, > /* Must check status to be sure of no errors. */ > timeout = jiffies + msecs_to_jiffies(timeout_ms); > do { > + /* > + * Due to the possibility of being preempted after > + * sending the status command, check the expiration > + * time first. > + */ > + expired = time_after(jiffies, timeout); > if (send_status) { > - /* > - * Due to the possibility of being preempted after > - * sending the status command, check the expiration > - * time first. > - */ > - expired = time_after(jiffies, timeout); > err = __mmc_send_status(card, &status, ignore_crc); > if (err) > goto out; > } > if ((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) > break; > + if (host->ops->card_busy) { > + if (!host->ops->card_busy(host)) > + break; > + busy = true; > + } > if (mmc_host_is_spi(host)) > break; > > @@ -556,19 +562,20 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, > * does'nt support MMC_CAP_WAIT_WHILE_BUSY, then we can only > * rely on waiting for the stated timeout to be sufficient. > */ > - if (!send_status) { > + if (!send_status && !host->ops->card_busy) { > mmc_delay(timeout_ms); > goto out; > } > > /* Timeout if the device never leaves the program state. */ > - if (expired && R1_CURRENT_STATE(status) == R1_STATE_PRG) { > + if (expired && > + (R1_CURRENT_STATE(status) == R1_STATE_PRG || busy)) { > pr_err("%s: Card stuck in programming state! %s\n", > mmc_hostname(host), __func__); > err = -ETIMEDOUT; > goto out; > } > - } while (R1_CURRENT_STATE(status) == R1_STATE_PRG); > + } while (R1_CURRENT_STATE(status) == R1_STATE_PRG || busy); > > err = mmc_switch_status_error(host, status); > out: > -- > 1.8.1.1.dirty > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" 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/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 62355bd..32de144 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -480,6 +480,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, u32 status = 0; bool use_r1b_resp = use_busy_signal; bool expired = false; + bool busy = false; mmc_retune_hold(host); @@ -535,19 +536,24 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, /* Must check status to be sure of no errors. */ timeout = jiffies + msecs_to_jiffies(timeout_ms); do { + /* + * Due to the possibility of being preempted after + * sending the status command, check the expiration + * time first. + */ + expired = time_after(jiffies, timeout); if (send_status) { - /* - * Due to the possibility of being preempted after - * sending the status command, check the expiration - * time first. - */ - expired = time_after(jiffies, timeout); err = __mmc_send_status(card, &status, ignore_crc); if (err) goto out; } if ((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) break; + if (host->ops->card_busy) { + if (!host->ops->card_busy(host)) + break; + busy = true; + } if (mmc_host_is_spi(host)) break; @@ -556,19 +562,20 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, * does'nt support MMC_CAP_WAIT_WHILE_BUSY, then we can only * rely on waiting for the stated timeout to be sufficient. */ - if (!send_status) { + if (!send_status && !host->ops->card_busy) { mmc_delay(timeout_ms); goto out; } /* Timeout if the device never leaves the program state. */ - if (expired && R1_CURRENT_STATE(status) == R1_STATE_PRG) { + if (expired && + (R1_CURRENT_STATE(status) == R1_STATE_PRG || busy)) { pr_err("%s: Card stuck in programming state! %s\n", mmc_hostname(host), __func__); err = -ETIMEDOUT; goto out; } - } while (R1_CURRENT_STATE(status) == R1_STATE_PRG); + } while (R1_CURRENT_STATE(status) == R1_STATE_PRG || busy); err = mmc_switch_status_error(host, status); out:
some MMC host do not support MMC_CAP_WAIT_WHILE_BUSY but provides ops->card_busy(), So, add this method to check card status after switch command. Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> --- drivers/mmc/core/mmc_ops.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-)