diff mbox series

[v2,1/3] i2c: designware: Enable async suspend / resume of designware devices

Message ID 20211025213532.2349161-2-rajatja@google.com
State Accepted
Headers show
Series i2c: Enable asynchronous suspend/resume | expand

Commit Message

Rajat Jain Oct. 25, 2021, 9:35 p.m. UTC 
Mark the designware devices for asynchronous suspend. With this, the
resume for designware devices does not get stuck behind other unrelated
devices (e.g. intel_backlight that takes hundreds of ms to resume,
waiting for its parent devices).

Signed-off-by: Rajat Jain <rajatja@google.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
---
v2: Add Jarkko's ack / tested by

 drivers/i2c/busses/i2c-designware-platdrv.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Wolfram Sang Nov. 29, 2021, 4:51 p.m. UTC | #1 
On Mon, Oct 25, 2021 at 02:35:29PM -0700, Rajat Jain wrote:
> Mark the designware devices for asynchronous suspend. With this, the
> resume for designware devices does not get stuck behind other unrelated
> devices (e.g. intel_backlight that takes hundreds of ms to resume,
> waiting for its parent devices).
> 
> Signed-off-by: Rajat Jain <rajatja@google.com>
> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
> Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>

Applied to for-next, thanks!
diff mbox series

Patch

diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 21113665ddea..2bd81abc86f6 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -293,6 +293,8 @@  static int dw_i2c_plat_probe(struct platform_device *pdev)
 					DPM_FLAG_MAY_SKIP_RESUME);
 	}
 
+	device_enable_async_suspend(&pdev->dev);
+
 	/* The code below assumes runtime PM to be disabled. */
 	WARN_ON(pm_runtime_enabled(&pdev->dev));