Messages in this thread Patch in this message | | | Date | Mon, 21 Sep 2015 12:30:41 +0800 | From | "Fu, Zhonghui" <> | Subject | [PATCH v2] MMC/SDIO: enable SDIO device to suspend/resume asynchronously |
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Now, PM core supports asynchronous suspend/resume mode for devices during system suspend/resume, and the power state transition of one device may be completed in separate kernel thread. PM core ensures all power state transition timing dependency between devices. This patch enables SDIO card and function devices to suspend/resume asynchronously. This will take advantage of multicore and improve system suspend/resume speed.
Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com> --- Changes in v2: - Amend commit message.
drivers/mmc/core/sdio.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index b91abed..6719b77 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -1106,6 +1106,8 @@ int mmc_attach_sdio(struct mmc_host *host) pm_runtime_enable(&card->dev); } + device_enable_async_suspend(&card->dev); + /* * The number of functions on the card is encoded inside * the ocr. @@ -1126,6 +1128,8 @@ int mmc_attach_sdio(struct mmc_host *host) */ if (host->caps & MMC_CAP_POWER_OFF_CARD) pm_runtime_enable(&card->sdio_func[i]->dev); + + device_enable_async_suspend(&card->sdio_func[i]->dev); } /* -- 1.7.1
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