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901084c51a
Move claimed and retune control flags out of the bitfield word to avoid unrelated RMW side effects in asynchronous contexts. The host->claimed bit shared a word with retune flags. Writes to claimed in __mmc_claim_host() or retune_now in mmc_mq_queue_rq() can overwrite other bits when concurrent updates happen in other contexts, triggering spurious WARN_ON(!host->claimed). Convert claimed, can_retune, retune_now and retune_paused to bool to remove shared-word coupling. Fixes:6c0cedd1ef("mmc: core: Introduce host claiming by context") Fixes:1e8e55b670("mmc: block: Add CQE support") Cc: stable@vger.kernel.org Suggested-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Penghe Geng <pgeng@nvidia.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>