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mmc: core: enable mmc host device to suspend/resume asynchronously 

This patch enables mmc hosts to suspend/resume asynchronously.
This will improve system suspend/resume speed. After applying
this patch and enabling all mmc hosts' child devices to
suspend/resume asynchronously on ASUS T100TA, the system
suspend-to-idle time is reduced from 1645ms to 1107ms, and the
system resume time is reduced from 940ms to 914ms.

Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com>
Acked-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Fu, Zhonghui 2016-01-22 11:32:18 +08:00 committed by Ulf Hansson
parent f771f6e832
commit ccf7bfdc36
1 changed files with 1 additions and 0 deletions
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1
drivers/mmc/core/host.c
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@ -339,6 +339,7 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
host->class_dev.parent = dev; host->class_dev.parent = dev;
host->class_dev.class = &mmc_host_class; host->class_dev.class = &mmc_host_class;
device_initialize(&host->class_dev); device_initialize(&host->class_dev);
device_enable_async_suspend(&host->class_dev);
if (mmc_gpio_alloc(host)) { if (mmc_gpio_alloc(host)) {
put_device(&host->class_dev); put_device(&host->class_dev);