Commit 4b9a4a66 authored Jun 02, 2013 by Antti Palosaari Committed by Mauro Carvalho Chehab Jun 13, 2013

[media] radio-keene: add delay in order to settle hardware



It was found by trial and error testing that at least 11 ms delay is
needed before first I/O, otherwise device will skip given command.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

parent 542d30f2

drivers/media/radio/radio-keene.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -382,6 +382,8 @@ static int usb_keene_probe(struct usb_interface *intf,
		video_set_drvdata(&radio->vdev, radio);
		set_bit(V4L2_FL_USE_FH_PRIO, &radio->vdev.flags);

		/* at least 11ms is needed in order to settle hardware */
		msleep(20);
		keene_cmd_main(radio, 95.16 * FREQ_MUL, false);

		retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO, -1);