Driver can do a HW reset for eMMC card if read/write/erase occurs timeout error.
Signed-off-by: Chuanxiao Dong <[email protected]> --- drivers/mmc/card/block.c | 10 ++++++++++ drivers/mmc/core/core.c | 2 ++ 2 files changed, 12 insertions(+), 0 deletions(-) diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index dcab2c5..425318b 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -424,6 +424,16 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *req) mmc_wait_for_req(card->host, &brq.mrq); + /* + * Check if need to do HW reset. + */ + if (brq.cmd.error) + mmc_handle_timeout_error(card->host, brq.cmd.error); + else if (brq.data.error) + mmc_handle_timeout_error(card->host, brq.data.error); + else if (brq.stop.error) + mmc_handle_timeout_error(card->host, brq.stop.error); + mmc_queue_bounce_post(mq); /* diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 7738e0d..c06d7b3 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1331,6 +1331,8 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from, if (err) { printk(KERN_ERR "mmc_erase: erase error %d, status %#x\n", err, cmd.resp[0]); + /* Before return, check whether can do a HW reset */ + mmc_handle_timeout_error(card->host, cmd.error); err = -EIO; goto out; } -- 1.6.6.1 _______________________________________________ MeeGo-kernel mailing list [email protected] http://lists.meego.com/listinfo/meego-kernel
