* [PATCH 2/2 v2] mmc/sdhci-acpi: enable sdhci-acpi device to suspend/resume asynchronously
@ 2016-01-22 4:35 Fu, Zhonghui
0 siblings, 0 replies; only message in thread
From: Fu, Zhonghui @ 2016-01-22 4:35 UTC (permalink / raw)
To: Ulf Hansson; +Cc: Adrian Hunter, michele.curti, linux-mmc, linux-kernel
This patch enables sdhci-acpi devices to suspend/resume asynchronously.
This will improve system suspend/resume speed. After enabling the
sdhci-acpi devices and all their child devices to suspend/resume
asynchronously on ASUS T100TA, the system suspend-to-idle time is
reduced from 1645ms to 1089ms, and the system resume time is reduced
from 940ms to 908ms.
Signed-off-by: Zhonghui Fu <zhonghui.fu@linux.intel.com>
---
Changes in v2:
- Update commit message
drivers/mmc/host/sdhci-acpi.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index f6047fc..3d27f2d 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -388,6 +388,8 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
}
+ device_enable_async_suspend(dev);
+
return 0;
err_free:
-- 1.7.1
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