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Message-ID: <Y46lHvHCFHH8J/ao@google.com>
Date: Tue, 6 Dec 2022 11:12:46 +0900
From: Sergey Senozhatsky <senozhatsky@...omium.org>
To: Ricardo Ribalda <ribalda@...omium.org>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>,
linux-media@...r.kernel.org, Yunke Cao <yunkec@...omium.org>,
Max Staudt <mstaudt@...omium.org>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Tomasz Figa <tfiga@...omium.org>,
Guenter Roeck <linux@...ck-us.net>,
Sergey Senozhatsky <senozhatsky@...omium.org>,
Alan Stern <stern@...land.harvard.edu>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/2] media: uvcvideo: Refactor streamon/streamoff
On (22/12/02 18:19), Ricardo Ribalda wrote:
> @@ -840,13 +840,19 @@ static int uvc_ioctl_streamon(struct file *file, void *fh,
[..]
> + handle->is_streaming = !ret;
> @@ -857,15 +863,22 @@ static int uvc_ioctl_streamoff(struct file *file, void *fh,
[..]
> + handle->is_streaming = !!ret;
Had uvc_ioctl_streamABC() be 3 functions we would have seen
handle->is_streaming = !!!ret;
:)
[..]
A nit:
> struct uvc_fh {
> struct v4l2_fh vfh;
> + bool is_streaming;
That's a lot of padding.
> struct uvc_video_chain *chain;
> struct uvc_streaming *stream;
> enum uvc_handle_state state;
I guess is_streaming better be next to enum uvc_handle_state, in which
case is_streaming should not change sizeof(uvc_fh) (at least so on
64-bit).
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