diff mbox

[v4,1/3] mmc: core: Remove some redundant validations in mmc_erase() function

Message ID 2b6b5b930d0f37a219d5786a6b56b17516a90abd.1473130123.git.baolin.wang@linaro.org
State New
Headers show

Commit Message

(Exiting) Baolin Wang Sept. 6, 2016, 2:55 a.m. UTC
Before issuing mmc_erase() function, users always have checked if it can
erase with mmc_can_erase/trim/discard() function, thus remove the redundant
erase checking in mmc_erase() function.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>

Tested-by: Shawn Lin <shawn.lin@rock-chips.com>

---
Changes since v3:
 - Split into 3 separate patches.
 - Add test tag by Shawn.

Changes since v2:
 - Add nr checking and other optimization in mmc_erase() function.

Changes since v1:
 - Add the alignment if card->erase_size is not power of 2.
---
 drivers/mmc/core/core.c |    7 -------
 1 file changed, 7 deletions(-)

-- 
1.7.9.5

Comments

(Exiting) Baolin Wang Sept. 6, 2016, 12:35 p.m. UTC | #1
On 6 September 2016 at 20:17, Ulf Hansson <ulf.hansson@linaro.org> wrote:
> On 6 September 2016 at 04:55, Baolin Wang <baolin.wang@linaro.org> wrote:

>> Before issuing mmc_erase() function, users always have checked if it can

>> erase with mmc_can_erase/trim/discard() function, thus remove the redundant

>> erase checking in mmc_erase() function.

>>

>> Signed-off-by: Baolin Wang <baolin.wang@linaro.org>

>> Tested-by: Shawn Lin <shawn.lin@rock-chips.com>

>> ---

>> Changes since v3:

>>  - Split into 3 separate patches.

>>  - Add test tag by Shawn.

>>

>> Changes since v2:

>>  - Add nr checking and other optimization in mmc_erase() function.

>>

>> Changes since v1:

>>  - Add the alignment if card->erase_size is not power of 2.

>> ---

>>  drivers/mmc/core/core.c |    7 -------

>>  1 file changed, 7 deletions(-)

>>

>> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c

>> index e55cde6..7d7209d 100644

>> --- a/drivers/mmc/core/core.c

>> +++ b/drivers/mmc/core/core.c

>> @@ -2217,13 +2217,6 @@ int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,

>>         unsigned int rem, to = from + nr;

>>         int err;

>>

>> -       if (!(card->host->caps & MMC_CAP_ERASE) ||

>> -           !(card->csd.cmdclass & CCC_ERASE))

>> -               return -EOPNOTSUPP;

>> -

>> -       if (!card->erase_size)

>> -               return -EOPNOTSUPP;

>> -

>

> Could we postpone this until after a clean-up-series of the mmc erase functions?

>

> Until the function remains an exported API, I think it should keep

> doing this validations.


OK. That's reasonable.

>

>>         if (mmc_card_sd(card) && arg != MMC_ERASE_ARG)

>>                 return -EOPNOTSUPP;

>>

>> --

>> 1.7.9.5

>>

>

> Kind regards

> Uffe




-- 
Baolin.wang
Best Regards
diff mbox

Patch

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index e55cde6..7d7209d 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2217,13 +2217,6 @@  int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
 	unsigned int rem, to = from + nr;
 	int err;
 
-	if (!(card->host->caps & MMC_CAP_ERASE) ||
-	    !(card->csd.cmdclass & CCC_ERASE))
-		return -EOPNOTSUPP;
-
-	if (!card->erase_size)
-		return -EOPNOTSUPP;
-
 	if (mmc_card_sd(card) && arg != MMC_ERASE_ARG)
 		return -EOPNOTSUPP;