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commit54309fde1aupstream. On reads with MMC_READ_MULTIPLE_BLOCK that fail, the recovery handler will use MMC_READ_SINGLE_BLOCK for each of the blocks, up to MMC_READ_SINGLE_RETRIES times each. The logic for this is fixed to never report unsuccessful reads as success to the block layer. On command error with retries remaining, blk_update_request was called with whatever value error was set last to. In case it was last set to BLK_STS_OK (default), the read will be reported as success, even though there was no data read from the device. This could happen on a CRC mismatch for the response, a card rejecting the command (e.g. again due to a CRC mismatch). In case it was last set to BLK_STS_IOERR, the error is reported correctly, but no retries will be attempted. Fixes:81196976ed("mmc: block: Add blk-mq support") Cc: stable@vger.kernel.org Signed-off-by: Christian Loehle <cloehle@hyperstone.com> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/bc706a6ab08c4fe2834ba0c05a804672@hyperstone.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Change-Id: Ie5a28313bbbf794fc62132db366f566e70ce80c8