[PATCH v2] Input: stmfts - use async probe & suspend/resume to avoid 2s delay

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Executing stmfts_power_on() function lasts over 2 seconds, what
significantly slows down the boot and resume processes if driver is
compiled in. Avoid this delay by forcing this driver to be probed
and suspended/resumed asynchronously.

Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
 drivers/input/touchscreen/stmfts.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/input/touchscreen/stmfts.c b/drivers/input/touchscreen/stmfts.c
index efdb1a75a163..40c833db150a 100644
--- a/drivers/input/touchscreen/stmfts.c
+++ b/drivers/input/touchscreen/stmfts.c
@@ -730,6 +730,7 @@ static int stmfts_probe(struct i2c_client *client,
 		return err;
 
 	pm_runtime_enable(&client->dev);
+	device_enable_async_suspend(&client->dev);
 
 	return 0;
 }
@@ -805,6 +806,7 @@ static struct i2c_driver stmfts_driver = {
 		.name = STMFTS_DEV_NAME,
 		.of_match_table = of_match_ptr(stmfts_of_match),
 		.pm = &stmfts_pm_ops,
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
 	},
 	.probe = stmfts_probe,
 	.remove = stmfts_remove,
-- 
2.15.0

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