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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2018-05-31 11:40:38 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-12-17 08:26:24 +0100 |
| commit | 7d5ef512575663695cf85f3aeb985a0aeb03e364 (patch) | |
| tree | 15d6c56f139560369547e1a6f724879734be824d /drivers/mmc | |
| parent | a89e7bcb18081c611eb6cf50edd440fa4983a71a (diff) | |
| download | lwn-7d5ef512575663695cf85f3aeb985a0aeb03e364.tar.gz lwn-7d5ef512575663695cf85f3aeb985a0aeb03e364.zip | |
mmc: core: Introduce MMC_CAP_SYNC_RUNTIME_PM
To allow mmc host drivers to inform the mmc core about rather using
pm_runtime_put_sync_suspend() instead of pm_runtime_put_autosuspend(),
let's introduce MMC_CAP_SYNC_RUNTIME_PM.
This is especially useful for those mmc host drivers that don't benefit
from using the runtime PM autosuspend feature. Typically this is those that
relies on parent devices to power the card via runtime PM, like some USB
host drivers for example.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/core.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index d3085f70e9a4..5bd58b95d318 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -887,7 +887,10 @@ void mmc_release_host(struct mmc_host *host) spin_unlock_irqrestore(&host->lock, flags); wake_up(&host->wq); pm_runtime_mark_last_busy(mmc_dev(host)); - pm_runtime_put_autosuspend(mmc_dev(host)); + if (host->caps & MMC_CAP_SYNC_RUNTIME_PM) + pm_runtime_put_sync_suspend(mmc_dev(host)); + else + pm_runtime_put_autosuspend(mmc_dev(host)); } } EXPORT_SYMBOL(mmc_release_host); |