mmc: core: report tuning command execution failure reason

Print the error code when the tuning command fails.  This allows the
reason for the failure to be reported, which aids debugging.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 319efdc1ad2158316f76a9d7cfbc1c50e62c1f2c..41b1e761965f7459c0d8f2849f7feb2c73f2ca30 100644 (file)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1079,7 +1079,8 @@ int mmc_execute_tuning(struct mmc_card *card)
        err = host->ops->execute_tuning(host, opcode);
 
        if (err)
-               pr_err("%s: tuning execution failed\n", mmc_hostname(host));
+               pr_err("%s: tuning execution failed: %d\n",
+                       mmc_hostname(host), err);
        else
                mmc_retune_enable(host);