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From: Adrian Hunter <adrian.hunter@intel.com>
To: Ulf Hansson <ulf.hansson@linaro.org>, Chris Ball <chris@printf.net>
Cc: linux-mmc <linux-mmc@vger.kernel.org>,
	Aaron Lu <aaron.lu@intel.com>, Philip Rakity <prakity@nvidia.com>,
	Girish K S <girish.shivananjappa@linaro.org>,
	Al Cooper <alcooperx@gmail.com>,
	Arend van Spriel <arend@broadcom.com>
Subject: [PATCH V2 08/15] mmc: mmc: Comment that callers need to hold re-tuning if the card is put to sleep
Date: Thu, 29 Jan 2015 11:00:23 +0200	[thread overview]
Message-ID: <1422522030-17793-9-git-send-email-adrian.hunter@intel.com> (raw)
In-Reply-To: <1422522030-17793-1-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 1fc48a2..d4156e9 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1494,6 +1494,7 @@ 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


  parent reply	other threads:[~2015-01-29  9:02 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-29  9:00 [PATCH V2 00/15] mmc: host: Add facility to support re-tuning Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 01/15] " Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 02/15] mmc: core: Disable re-tuning when card is no longer initialized Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 03/15] mmc: core: Add support for re-tuning before each request Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 04/15] mmc: core: Check re-tuning before retrying Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 05/15] mmc: core: Hold re-tuning during switch commands Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 06/15] mmc: core: Hold re-tuning during erase commands Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 07/15] mmc: core: Hold re-tuning while bkops ongoing Adrian Hunter
2015-01-29  9:00 ` Adrian Hunter [this message]
2015-01-29  9:00 ` [PATCH V2 09/15] mmc: core: Separate out the mmc_switch status check so it can be re-used Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 10/15] mmc: core: Add support for HS400 re-tuning Adrian Hunter
2015-02-04 13:35   ` [PATCH V3 " Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 11/15] mmc: sdhci: Change to new way of doing re-tuning Adrian Hunter
2015-03-06 12:51   ` Ulf Hansson
2015-03-09  8:37     ` Adrian Hunter
2015-03-10 13:55       ` Ulf Hansson
2015-03-10 14:20         ` Adrian Hunter
2015-03-23 12:54           ` Ulf Hansson
2015-03-23 14:26             ` Adrian Hunter
2015-03-23 15:02               ` Ulf Hansson
2015-03-23 21:11                 ` Adrian Hunter
2015-03-24 21:12                   ` Ulf Hansson
2015-03-25 13:48                     ` Adrian Hunter
2015-03-26 16:06                       ` Ulf Hansson
2015-03-27  9:54                         ` Adrian Hunter
2015-03-27 12:04                           ` Adrian Hunter
2015-03-24  2:49               ` NeilBrown
2015-03-24  9:40                 ` Ulf Hansson
2015-01-29  9:00 ` [PATCH V2 12/15] mmc: sdhci: Flag re-tuning is needed on CRC or End-Bit errors Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 13/15] mmc: block: Check re-tuning in the recovery path Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 14/15] mmc: block: Retry data requests when re-tuning is needed Adrian Hunter
2015-02-27 12:55   ` [PATCH V3 14/15] mmc: block: Retry errored " Adrian Hunter
2015-01-29  9:00 ` [PATCH V2 15/15] mmc: core: Don't print reset warning if reset is not supported Adrian Hunter
2015-02-09  9:33   ` Arend van Spriel
2015-02-09  9:47     ` Adrian Hunter
2015-02-09 16:05       ` Johan Rudholm
2015-02-09  8:43 ` [PATCH V2 00/15] mmc: host: Add facility to support re-tuning Adrian Hunter

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