Re: [PATCH v2 1/4]enable background operations for supported eMMC card

On Mon, May 2, 2011 at 9:53 PM, Per Forlin <per.lkml <at> gmail.com> wrote:
> On Fri, Dec 3, 2010 at 1:13 PM, Chuanxiao Dong <chuanxiao.dong <at> intel.com> wrote:
>> From 984adc755cf2f7966a89e510a50f085e314fe347 Mon Sep 17 00:00:00 2001
>> From: Chuanxiao Dong <chuanxiao.dong <at> intel.com>
>> Date: Mon, 22 Nov 2010 16:31:12 +0800
>> Subject: [PATCH 1/4] mmc: Enabled background operations feature if eMMC card supports
>>
>> Background operations is a new feature defined in eMMC4.41 standard.
>> Since this feature is opertional for eMMC card, so driver only enable
>> for those eMMC card which supports this feature
>>
>> Signed-off-by: Chuanxiao Dong <chuanxiao.dong <at> intel.com>
>> ---
>>  drivers/mmc/core/mmc.c   |   26 ++++++++++++++++++++++++++
>>  include/linux/mmc/card.h |    2 ++
>>  include/linux/mmc/mmc.h  |    3 +++
>>  3 files changed, 31 insertions(+), 0 deletions(-)
>>
>> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
>> index 77f93c3..471ed82 100644
>> --- a/drivers/mmc/core/mmc.c
>> +++ b/drivers/mmc/core/mmc.c
>>  <at>  <at>  -310,6 +310,14  <at>  <at>  static int mmc_read_ext_csd(struct mmc_card *card)
>>                        ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
>>                card->ext_csd.trim_timeout = 300 *
>>                        ext_csd[EXT_CSD_TRIM_MULT];
>> +
>> +               /* detect whether the eMMC card support BKOPS */
>> +               if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
>> +                       card->ext_csd.bkops = 1;