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mmc: rtsx: Revert "mmc: rtsx: add support for pre_req and post_req"

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This reverts commit c42deffd5b.

commit <mmc: rtsx: add support for pre_req and post_req> did use
mutex_unlock() in tasklet, but mutex_unlock() can't be used in
tasklet(atomic context). The driver needs to use mutex to avoid
concurrency, so we can't use tasklet here, the patch need to be
removed.

The spinlock host->lock and pcr->lock may deadlock, one way to solve
the deadlock is remove host->lock in sd_isr_done_transfer(), but if
using workqueue the we can avoid using the spinlock and also avoid
the problem.

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Micky Ching 2014-04-29 09:54:54 +08:00 • committed by Lee Jones
parent 89ca3b8819
commit 98fcc5762d
4 changed files with 107 additions and 446 deletions
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1
include/linux/mfd/rtsx_common.h
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@ -45,7 +45,6 @@ struct platform_device;
struct rtsx_slot {
struct platform_device *p_dev;
void (*card_event)(struct platform_device *p_dev);
void (*done_transfer)(struct platform_device *p_dev);
};
#endif