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| author | Balaji T K <balajitk@ti.com> | 2011-07-07 19:26:21 +0530 |
|---|---|---|
| committer | Nishanth Menon <nm@ti.com> | 2011-07-14 11:53:56 -0700 |
| commit | b3bb409519202a5bea06698bb40f1f9a46e1d917 (patch) | |
| tree | 8c36fff1adc97500950b31a574be846b578221ed /drivers/mmc | |
| parent | 94e37bfc08dc97a54e6fd48a8f600b804ecf5ac5 (diff) | |
| download | kernel_samsung_tuna-b3bb409519202a5bea06698bb40f1f9a46e1d917.zip kernel_samsung_tuna-b3bb409519202a5bea06698bb40f1f9a46e1d917.tar.gz kernel_samsung_tuna-b3bb409519202a5bea06698bb40f1f9a46e1d917.tar.bz2 | |
MMC: eMMC: Sleep before OFF
As per the eMMC spec the card should be put to sleep before Vcc is
turned off. Put eMMC to sleep in the core suspend sequence.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 2a7e43b..df98f18 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -877,16 +877,20 @@ static void mmc_detect(struct mmc_host *host) */ static int mmc_suspend(struct mmc_host *host) { + int err = 0; + BUG_ON(!host); BUG_ON(!host->card); mmc_claim_host(host); - if (!mmc_host_is_spi(host)) + if (mmc_card_can_sleep(host)) + err = mmc_card_sleep(host); + else if (!mmc_host_is_spi(host)) mmc_deselect_cards(host); host->card->state &= ~MMC_STATE_HIGHSPEED; mmc_release_host(host); - return 0; + return err; } /* |