diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2018-08-21 15:05:55 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-08-21 16:12:41 +0200 |
| commit | 26caddf274cf1e89fd4ce44ab2b8dbc7a7f97681 (patch) | |
| tree | 52b81204031618043211b80dc1c5adc0fa880e7d /drivers/mmc/core/queue.h | |
| parent | 17e96d8516e31c3cb52cb8e2ee79d1d2e6948c11 (diff) | |
mmc: block: Fix unsupported parallel dispatch of requests
The mmc block driver does not support parallel dispatch of requests. In
normal circumstances, all requests are anyway funneled through a single
work item, so parallel dispatch never happens. However it can happen if
there is no elevator.
Fix that by detecting if a dispatch is in progress and returning busy
(BLK_STS_RESOURCE) in that case
Fixes: 81196976ed94 ("mmc: block: Add blk-mq support")
Cc: stable@vger.kernel.org # v4.16+
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core/queue.h')
| -rw-r--r-- | drivers/mmc/core/queue.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/core/queue.h b/drivers/mmc/core/queue.h index 17e59d50b496..9bf3c9245075 100644 --- a/drivers/mmc/core/queue.h +++ b/drivers/mmc/core/queue.h @@ -81,6 +81,7 @@ struct mmc_queue { unsigned int cqe_busy; #define MMC_CQE_DCMD_BUSY BIT(0) #define MMC_CQE_QUEUE_FULL BIT(1) + bool busy; bool use_cqe; bool recovery_needed; bool in_recovery; |