Re: [PATCH v2 2/2] media: uvcvideo: Do not alloc dev->status
From: Ricardo Ribalda
Date: Wed Dec 14 2022 - 01:02:39 EST
Hi Sergey
Thanks for the review
On Wed, 14 Dec 2022 at 01:40, Sergey Senozhatsky
<senozhatsky@xxxxxxxxxxxx> wrote:
>
> On (22/12/13 15:35), Ricardo Ribalda wrote:
> [..]
> > +++ b/drivers/media/usb/uvc/uvcvideo.h
> > @@ -559,7 +559,7 @@ struct uvc_device {
> > /* Status Interrupt Endpoint */
> > struct usb_host_endpoint *int_ep;
> > struct urb *int_urb;
> > - u8 *status;
> > + u8 status[UVC_MAX_STATUS_SIZE];
>
> Can we use `struct uvc_control_status status;` instead of open-coding it?
> Seems that this is what the code wants anyway:
It can also be a `struct uvc_streaming_status`
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/media/usb/uvc/uvc_status.c#n230
so we always need the casting :(
>
> struct uvc_control_status *status =
> (struct uvc_control_status *)dev->status;
>
> And then we can drop casts in uvc_status_complete().
--
Ricardo Ribalda