mmc: block: Fixup condition for CMD13 polling for RPMB requests

The CMD13 polling is needed for commands with R1B responses. In commit
a0d4c7eb71dd ("mmc: block: Add CMD13 polling for MMC IOCTLS with R1B
response"), the intent was to introduce this for requests targeted to the
RPMB partition. However, the condition to trigger the polling loop became
wrong, leading to unnecessary polling. Let's fix the condition to avoid
this.

Fixes: a0d4c7eb71dd ("mmc: block: Add CMD13 polling for MMC IOCTLS with R1B response")
Cc: stable@vger.kernel.org
Reported-by: Zhan Liu <zliua@micron.com>
Signed-off-by: Zhan Liu <zliua@micron.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Link: https://lore.kernel.org/r/20201202202320.22165-1-huobean@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 8d3df0be0355cec333b6a22ed20c283fa217c66b..42e27a2982180efe570f1ea658c6dfc57ccf4222 100644 (file)
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -580,7 +580,7 @@ static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md,
 
        memcpy(&(idata->ic.response), cmd.resp, sizeof(cmd.resp));
 
-       if (idata->rpmb || (cmd.flags & MMC_RSP_R1B)) {
+       if (idata->rpmb || (cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) {
                /*
                 * Ensure RPMB/R1B command has completed by polling CMD13
                 * "Send Status".