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authorMaya Erez <merez@codeaurora.org>2013-01-28 16:44:22 -0500
committerChris Ball <cjb@laptop.org>2013-02-24 14:37:00 -0500
commit881d926d9d0bd2eb50f8f90c993bc403853382ce (patch)
tree111c13cd2340a2199ebd367c83cbeb357d65da03 /drivers/mmc
parentf9e37137e420a626df4f5e7c4f0869bf7a1d4929 (diff)
downloadlinux-881d926d9d0bd2eb50f8f90c993bc403853382ce.tar.gz
mmc: core: move the cache disabling operation to mmc_suspend
Cache control is an eMMC feature and in therefore should be part of MMC's bus resume operations, performed in mmc_suspend, rather than in the generic mmc_suspend_host(). Signed-off-by: Maya Erez <merez@codeaurora.org> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/core/core.c7
-rw-r--r--drivers/mmc/core/mmc.c8
2 files changed, 8 insertions, 7 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 8b3a1222e66..39f28af34cb 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2486,6 +2486,7 @@ EXPORT_SYMBOL(mmc_flush_cache);
* Turn the cache ON/OFF.
* Turning the cache OFF shall trigger flushing of the data
* to the non-volatile storage.
+ * This function should be called with host claimed
*/
int mmc_cache_ctrl(struct mmc_host *host, u8 enable)
{
@@ -2497,7 +2498,6 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable)
mmc_card_is_removable(host))
return err;
- mmc_claim_host(host);
if (card && mmc_card_mmc(card) &&
(card->ext_csd.cache_size > 0)) {
enable = !!enable;
@@ -2515,7 +2515,6 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable)
card->ext_csd.cache_ctrl = enable;
}
}
- mmc_release_host(host);
return err;
}
@@ -2534,10 +2533,6 @@ int mmc_suspend_host(struct mmc_host *host)
cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
- err = mmc_cache_ctrl(host, 0);
- if (err)
- goto out;
-
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
if (host->bus_ops->suspend) {
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index e6e39111e05..dc17d4097f9 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1379,6 +1379,11 @@ static int mmc_suspend(struct mmc_host *host)
BUG_ON(!host->card);
mmc_claim_host(host);
+
+ err = mmc_cache_ctrl(host, 0);
+ if (err)
+ goto out;
+
if (mmc_can_poweroff_notify(host->card))
err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT);
else if (mmc_card_can_sleep(host))
@@ -1386,8 +1391,9 @@ static int mmc_suspend(struct mmc_host *host)
else if (!mmc_host_is_spi(host))
err = mmc_deselect_cards(host);
host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200);
- mmc_release_host(host);
+out:
+ mmc_release_host(host);
return err;
}