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UPSTREAM: usb: gadget: uvc: ensure the vdev is unset

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Since the uvc video device is created on demand, we have to ensure
that the struct is always zeroed. Otherwise the previous settings
might collide with the new values.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20211017215017.18392-7-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: William Wu <william.wu@rock-chips.com>
(cherry picked from commit e4ce9ed835)
Change-Id: I4ecb8c85a4d838254b68ea23284e35b04b9678af
This commit is contained in:
Michael Grzeschik
2021-10-17 23:50:17 +02:00
committed by Tao Huang
parent 435ab979d2
commit 3afe252aa9
1 changed files with 1 additions and 0 deletions
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drivers/usb/gadget/function/f_uvc.c
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@@ -586,6 +586,7 @@ uvc_register_video(struct uvc_device *uvc)
int ret;
/* TODO reference counting. */
memset(&uvc->vdev, 0, sizeof(uvc->video));
uvc->vdev.v4l2_dev = &uvc->v4l2_dev;
uvc->vdev.fops = &uvc_v4l2_fops;
uvc->vdev.ioctl_ops = &uvc_v4l2_ioctl_ops;