Commit a508fbfe authored by Matti Vaittinen's avatar Matti Vaittinen Committed by Jonathan Cameron
Browse files

iio: kx022a: Probe asynchronously 

Devices which may take a while to initialize during probe and which have
no strong reason to probe synchronously can request asynchronous probing
as default probe strategy. This can speed-up start times on some
platforms.

The KX022A gets probe delayed for at least two reasons. It enables the
supply regulator, (which is likely to have ramp-up delay if it was
disabled) and additionally it delays while the sensor itself is
initializing.

Changing to asynchronous probing may cause problems. Some of which are
discussed in:
https://lore.kernel.org/all/06db017f-e985-4434-8d1d-02ca2100cca0@sirena.org.uk/



Enable asynchronous probing for KX022A.

Signed-off-by: default avatarMatti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/24cea76c282a28b7a4dba297ab627176f8097907.1683185765.git.mazziesaccount@gmail.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 4cd56dbd

drivers/iio/accel/kionix-kx022a-i2c.c

+1 −0
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ static struct i2c_driver kx022a_i2c_driver = { 
	.driver = {

		.name  = "kx022a-i2c",

		.of_match_table = kx022a_of_match,

		.probe_type = PROBE_PREFER_ASYNCHRONOUS,

	  },

	.probe_new    = kx022a_i2c_probe,

};

drivers/iio/accel/kionix-kx022a-spi.c

+1 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ static struct spi_driver kx022a_spi_driver = { 
	.driver = {

		.name   = "kx022a-spi",

		.of_match_table = kx022a_of_match,

		.probe_type = PROBE_PREFER_ASYNCHRONOUS,

	},

	.probe = kx022a_spi_probe,

	.id_table = kx022a_id,