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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>

(cherry picked from commit e4ce9ed835bcaf4cd3230a53a79645986c25ce0f)
Bug: 242344221
Change-Id: Iff680809310e34b0341a902250f208be4e6cdb6e
Signed-off-by: Avichal Rakesh <arakesh@google.com>
(cherry picked from commit c59078421b7ac19a5326e598ad96c77f29e3cb1f)
This commit is contained in:
Michael Grzeschik
2021-10-17 23:50:17 +02:00
committed by Treehugger Robot
parent 82beac34d8
commit baa5c6d923
1 changed files with 1 additions and 0 deletions
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1
drivers/usb/gadget/function/f_uvc.c
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@@ -417,6 +417,7 @@ 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.v4l2_dev->dev = &cdev->gadget->dev;
uvc->vdev.fops = &uvc_v4l2_fops;