[PATCH V5 08/15] mmc: mmc: Comment that callers need to hold re-tuning if the card is put to sleep

From: Adrian Hunter <adrian.hunter@intel.com>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-mmc <linux-mmc@vger.kernel.org>,
	Aaron Lu <aaron.lu@intel.com>, Philip Rakity <prakity@nvidia.com>,
	Al Cooper <alcooperx@gmail.com>,
	Arend van Spriel <arend@broadcom.com>
Subject: [PATCH V5 08/15] mmc: mmc: Comment that callers need to hold re-tuning if the card is put to sleep
Date: Tue, 14 Apr 2015 16:12:19 +0300	[thread overview]
Message-ID: <1429017146-15981-9-git-send-email-adrian.hunter@intel.com> (raw)
In-Reply-To: <1429017146-15981-1-git-send-email-adrian.hunter@intel.com>

Currently "mmc sleep" is only used before power off and
is not paired with waking up.  If that ever changed,
re-tuning might need to be held, so add a comment for that.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
 drivers/mmc/core/mmc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index c84131e..53a9cb3 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1504,6 +1504,7 @@ static int mmc_can_sleep(struct mmc_card *card)
 	return (card && card->ext_csd.rev >= 3);
 }
 
+/* If necessary, callers must hold re-tuning */
 static int mmc_sleep(struct mmc_host *host)
 {
 	struct mmc_command cmd = {0};
-- 
1.9.1

