diff options
| author | Ritesh Harjani <riteshh@codeaurora.org> | 2015-10-07 16:42:47 +0530 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-05-31 15:28:05 -0700 |
| commit | b90443c63bacb73da137a13811500816a07194ae (patch) | |
| tree | 3a3754b4e88f5364bbe2f51d824e80d7abd52082 /include | |
| parent | bbd570a9b13e15b7b16034157b67f464f88f9546 (diff) | |
mmc: block: Error handling fixes and support of reset_all
This does following:
1. Adds support to handle multiple cmdq software requests timeout.
Currently we schedule error handling work for the first timedout
request. We requeue all pending tasks, knock off all tasks from
device queue and reset card and controller as part of this, then
for all other software requests timeout, if it comes while executing
error work, we return BLK_EH_NOT_HANDLED.
This fixes BUG_ON in case of multiple requests timesout together.
2. Current code resets CQE, power cycle the card and requeue all the
requests in case of any error.
3. mmc_blk_cmdq_err work takes care freeing up all resource allocation
like clk and rpm hold, in case of reset_all.
4. Currently we were never clearing error CMDQ_STATE_ERR in case of any
error. This patch takes care of this bug.
Change-Id: I83d483c11fe2d7f2e462086cc3c0932057304c0d
Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
[subhashj@codeaurora.org: fixed compilation error]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mmc/host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index b923a74add1d..4438833ca935 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -257,6 +257,7 @@ struct mmc_cmdq_context_info { #define CMDQ_STATE_DCMD_ACTIVE 1 #define CMDQ_STATE_HALT 2 #define CMDQ_STATE_CQ_DISABLE 3 +#define CMDQ_STATE_REQ_TIMED_OUT 4 wait_queue_head_t queue_empty_wq; wait_queue_head_t wait; int active_small_sector_read_reqs; |