On 4 December 2015 at 14:05, Fu, Zhonghui <zhonghui.fu@xxxxxxxxxxxxxxx> wrote: > 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 dependency between devices. This patch > enables MMC/SD/SDIO card and SDIO function devices to suspend/resume > asynchronously. This will take advantage of multicore and improve > system suspend/resume speed. After applying this patch and enabling > all SDIO function's child devices to suspend/resume asynchronously > on ASUS T100TA, the system suspend-to-idle time is reduced from > 1645ms to 1108ms, and the system resume time is reduced from 940ms > to 918ms. > > Signed-off-by: Zhonghui Fu <zhonghui.fu@xxxxxxxxxxxxxxx> Thanks, applied for next! Kind regards Uffe > --- > drivers/mmc/core/bus.c | 2 ++ > drivers/mmc/core/sdio_bus.c | 1 + > 2 files changed, 3 insertions(+), 0 deletions(-) > > diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c > index 972ff84..4bc48f1 100644 > --- a/drivers/mmc/core/bus.c > +++ b/drivers/mmc/core/bus.c > @@ -349,6 +349,8 @@ int mmc_add_card(struct mmc_card *card) > > card->dev.of_node = mmc_of_find_child_device(card->host, 0); > > + device_enable_async_suspend(&card->dev); > + > ret = device_add(&card->dev); > if (ret) > return ret; > diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c > index 7e327a6..86f5b32 100644 > --- a/drivers/mmc/core/sdio_bus.c > +++ b/drivers/mmc/core/sdio_bus.c > @@ -322,6 +322,7 @@ int sdio_add_func(struct sdio_func *func) > > sdio_set_of_node(func); > sdio_acpi_set_handle(func); > + device_enable_async_suspend(&func->dev); > ret = device_add(&func->dev); > if (ret == 0) > sdio_func_set_present(func); > -- 1.7.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
