diff options
| author | Shridhar Rasal <srasal@nvidia.com> | 2012-02-07 21:02:47 +0530 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 01:07:21 -0700 |
| commit | 44387398546a58ac503fc422eedcdbf9a21bd9aa (patch) | |
| tree | 957a70acedb8df40b7c517da392db6241a71d0be /include/linux/mmc | |
| parent | 14a2485ec2c07bf46aa14be46b2a77cc6ff77901 (diff) | |
mmc: sdhci: quirk for not calculate max_discard_to
Adding SDHCI_QUIRK_NO_CALC_MAX_DISCARD_TO for not to calculate
max_discard_to which is deviation in setting max_discard.
For some host controllers, combination of
1) calculated non-zero value of max_discard_to and
2) erase_group_def not set
can result into setting max_discard value to pref_erase in
sectors which is very less, so it takes long time for erase.
With this change host controller can specify to calculate
max_discard_to and based on that max_discard value will be set.
bug 930767
Change-Id: I2c64ef8a6821620f2a65c06e25d2af68e3554a75
Signed-off-by: Shridhar Rasal <srasal@nvidia.com>
Reviewed-on: http://git-master/r/79839
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Rebase-Id: Ra9fba9c1554085f1b83733877621954f4d7fbf90
Diffstat (limited to 'include/linux/mmc')
| -rw-r--r-- | include/linux/mmc/sdhci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index d2782e29db38..90845af9368e 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -91,6 +91,8 @@ struct sdhci_host { #define SDHCI_QUIRK_NON_STD_VOLTAGE_SWITCHING (1ULL<<32) /* Controller doesn't follow the standard frequency tuning procedure */ #define SDHCI_QUIRK_NON_STANDARD_TUNING (1LL<<33) +/* Controller doesn't calculate max_discard_to */ +#define SDHCI_QUIRK_NO_CALC_MAX_DISCARD_TO (1LL<<34) unsigned int quirks2; /* More deviations from spec. */ |