mmc: sh_mmcif: force to fail CMD52 immediately

mmc_rescan() sends CMD52 (SD_IO_RW_DIRECT) to reset SDIO card during
card detection. CMD52 should be ignored by SD/eMMC cards, but we can
also abort it in the driver immediately, since MMCIF doesn't support
SDIO cards anyway.

Signed-off-by: Teppei Kamijou <[email protected]>
Signed-off-by: Shinya Kuribayashi <[email protected]>
Signed-off-by: Guennadi Liakhovetski <[email protected]>
Signed-off-by: Chris Ball <[email protected]>

diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 741aeb95c7a46e32208c2f8e4479dcd6809fe0f4..8b4e98e2b1300fbba66a5f91c633fc8b58573b35 100644 (file)
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -911,6 +911,7 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq)
                if ((mrq->cmd->flags & MMC_CMD_MASK) != MMC_CMD_BCR)
                        break;
        case MMC_APP_CMD:
+       case SD_IO_RW_DIRECT:
                host->state = STATE_IDLE;
                mrq->cmd->error = -ETIMEDOUT;
                mmc_request_done(mmc, mrq);