From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Fri, 29 Jan 2016 09:44:05 +0000 (+0000)
Subject: mmc: core: report tuning command execution failure reason
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=07d97d872359d15f0f50f3bceb8f932be99a2226;p=linux.git

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 319efdc1ad215..41b1e761965f7 100644
--- 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);