diff options
| author | Dmitry Shmidt <dimitrysh@google.com> | 2010-10-14 15:20:21 -0700 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2012-02-14 11:26:21 -0800 |
| commit | 4744d50648b2a0fd3437afacc088121bb8793243 (patch) | |
| tree | 09e0ca44341f66e139f86ac700de11da43f53fa0 /drivers | |
| parent | 5ac72c80ecc0b708659ccc433c1d2eaaf0707754 (diff) | |
mmc: Fix pm_notifier obeying deferred resume
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/core/core.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index a8c917d1a06..aded738ecc6 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1406,11 +1406,17 @@ static inline void mmc_bus_put(struct mmc_host *host) int mmc_resume_bus(struct mmc_host *host) { + unsigned long flags; + if (!mmc_bus_needs_resume(host)) return -EINVAL; printk("%s: Starting deferred resume\n", mmc_hostname(host)); + spin_lock_irqsave(&host->lock, flags); host->bus_resume_flags &= ~MMC_BUSRESUME_NEEDS_RESUME; + host->rescan_disable = 0; + spin_unlock_irqrestore(&host->lock, flags); + mmc_bus_get(host); if (host->bus_ops && !host->bus_dead) { mmc_power_up(host); @@ -2482,7 +2488,7 @@ int mmc_resume_host(struct mmc_host *host) int err = 0; mmc_bus_get(host); - if (host->bus_resume_flags & MMC_BUSRESUME_MANUAL_RESUME) { + if (mmc_bus_manual_resume(host)) { host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME; mmc_bus_put(host); return 0; @@ -2538,6 +2544,10 @@ int mmc_pm_notify(struct notifier_block *notify_block, case PM_SUSPEND_PREPARE: spin_lock_irqsave(&host->lock, flags); + if (mmc_bus_needs_resume(host)) { + spin_unlock_irqrestore(&host->lock, flags); + break; + } host->rescan_disable = 1; host->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT; spin_unlock_irqrestore(&host->lock, flags); @@ -2562,6 +2572,10 @@ int mmc_pm_notify(struct notifier_block *notify_block, case PM_POST_RESTORE: spin_lock_irqsave(&host->lock, flags); + if (mmc_bus_manual_resume(host)) { + spin_unlock_irqrestore(&host->lock, flags); + break; + } host->rescan_disable = 0; host->power_notify_type = MMC_HOST_PW_NOTIFY_LONG; spin_unlock_irqrestore(&host->lock, flags); |