From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9F8AE9463; Thu, 28 Nov 2024 20:46:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732826793; cv=none; b=ItdVlGtLeL30SKydlwpIS97sdq+Dmoup/Qa+VjazGwJJqLw6AD5PYVmrO6ge+2ynz9EeJdXdtwJTogdvR7Sef/BkNA543NtdcaQT3y7KTkBW2eydgOL47yvmRVlB+q7mNly9X4DivVSTyjKKwuHzEQfDs0xu/WsBr1WEoJMLPm0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732826793; c=relaxed/simple; bh=YgsAdv9oCpugnNqSRK4GABNlpokCOMDY3ZwI/UFDeTo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Q32j2PROy1TdqhfP7rKB7382hA5wwmTzBq3u7+QRpM9A3Nnjf65Cczkxon9icvSqRTd/FDbldQKQrCa7FKWbR7Xkcg5FqVdkYWHZF6RBG0JyqlP7cQPQUrMIlfXoCQJnwEsNR2QxQZLiE4vZNYTCYf5AnaPBuMe5S/KqTi6GWL4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=HKAMAbBv; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="HKAMAbBv" Received: from pendragon.ideasonboard.com (81-175-209-231.bb.dnainternet.fi [81.175.209.231]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id D81E459D; Thu, 28 Nov 2024 21:46:05 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1732826766; bh=YgsAdv9oCpugnNqSRK4GABNlpokCOMDY3ZwI/UFDeTo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=HKAMAbBv+WSIuBZvNUIMB6INRosVfWgKFvQv0BvZH/pd4bIz6O04FJPBTsvI3XybN FXTVydPsRN0Iw+eNectHdUkjPYotaVcxYldSE50ogtqU1CdrdfKmbHNGnYbQa3K1FG Xz3VuYaI16cS3oEWeji7m9tUTdRbeHGXqB7ZBcVo= Date: Thu, 28 Nov 2024 22:46:19 +0200 From: Laurent Pinchart To: Ricardo Ribalda Cc: Hans de Goede , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] media: uvcvideo: Remove duplicated cap/out code Message-ID: <20241128204619.GB25731@pendragon.ideasonboard.com> References: <20241127-uvc-dup-cap-out-v1-1-1bdcad2dabb0@chromium.org> <20241128202442.GC13852@pendragon.ideasonboard.com> <20241128203127.GD13852@pendragon.ideasonboard.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On Thu, Nov 28, 2024 at 09:36:06PM +0100, Ricardo Ribalda wrote: > On Thu, 28 Nov 2024 at 21:31, Laurent Pinchart > wrote: > > > > On Thu, Nov 28, 2024 at 10:24:42PM +0200, Laurent Pinchart wrote: > > > Hi Ricardo, > > > > > > Thank you for the patch. > > > > > > On Wed, Nov 27, 2024 at 07:31:29AM +0000, Ricardo Ribalda wrote: > > > > The *_vid_cap and *_vid_out helpers seem to be identical. Remove all the > > > > duplicated code. > > > > > > > > Signed-off-by: Ricardo Ribalda > > > > --- > > > > Unless I miss something, cap and out helpers are identical. So there is > > > > no need to duplicate code > > > > --- > > > > drivers/media/usb/uvc/uvc_v4l2.c | 112 ++++++++------------------------------- > > > > 1 file changed, 22 insertions(+), 90 deletions(-) > > > > > > > > diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c > > > > index 97c5407f6603..11ccdaf0269f 100644 > > > > --- a/drivers/media/usb/uvc/uvc_v4l2.c > > > > +++ b/drivers/media/usb/uvc/uvc_v4l2.c > > > > @@ -361,9 +361,11 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream, > > > > return ret; > > > > } > > > > > > > > -static int uvc_v4l2_get_format(struct uvc_streaming *stream, > > > > - struct v4l2_format *fmt) > > > > +static int uvc_ioctl_g_fmt(struct file *file, void *fh, > > > > + struct v4l2_format *fmt) > > > > { > > > > + struct uvc_fh *handle = fh; > > > > + struct uvc_streaming *stream = handle->stream; > > > > const struct uvc_format *format; > > > > const struct uvc_frame *frame; > > > > int ret = 0; > > > > @@ -395,9 +397,11 @@ static int uvc_v4l2_get_format(struct uvc_streaming *stream, > > > > return ret; > > > > } > > > > > > > > -static int uvc_v4l2_set_format(struct uvc_streaming *stream, > > > > - struct v4l2_format *fmt) > > > > +static int uvc_ioctl_s_fmt(struct file *file, void *fh, > > > > + struct v4l2_format *fmt) > > > > { > > > > + struct uvc_fh *handle = fh; > > > > + struct uvc_streaming *stream = handle->stream; > > > > struct uvc_streaming_control probe; > > > > const struct uvc_format *format; > > > > const struct uvc_frame *frame; > > > > @@ -685,11 +689,13 @@ static int uvc_ioctl_querycap(struct file *file, void *fh, > > > > return 0; > > > > } > > > > > > > > -static int uvc_ioctl_enum_fmt(struct uvc_streaming *stream, > > > > +static int uvc_ioctl_enum_fmt(struct file *file, void *fh, > > > > struct v4l2_fmtdesc *fmt) > > > > { > > > > - const struct uvc_format *format; > > > > + struct uvc_fh *handle = fh; > > > > + struct uvc_streaming *stream = handle->stream; > > > > enum v4l2_buf_type type = fmt->type; > > > > + const struct uvc_format *format; > > > > u32 index = fmt->index; > > > > > > > > if (fmt->type != stream->type || fmt->index >= stream->nformats) > > > > @@ -707,82 +713,8 @@ static int uvc_ioctl_enum_fmt(struct uvc_streaming *stream, > > > > return 0; > > > > } > > > > > > > > -static int uvc_ioctl_enum_fmt_vid_cap(struct file *file, void *fh, > > > > - struct v4l2_fmtdesc *fmt) > > > > -{ > > > > - struct uvc_fh *handle = fh; > > > > - struct uvc_streaming *stream = handle->stream; > > > > - > > > > - return uvc_ioctl_enum_fmt(stream, fmt); > > > > -} > > > > - > > > > -static int uvc_ioctl_enum_fmt_vid_out(struct file *file, void *fh, > > > > - struct v4l2_fmtdesc *fmt) > > > > -{ > > > > - struct uvc_fh *handle = fh; > > > > - struct uvc_streaming *stream = handle->stream; > > > > - > > > > - return uvc_ioctl_enum_fmt(stream, fmt); > > > > -} > > > > - > > > > -static int uvc_ioctl_g_fmt_vid_cap(struct file *file, void *fh, > > > > - struct v4l2_format *fmt) > > > > -{ > > > > - struct uvc_fh *handle = fh; > > > > - struct uvc_streaming *stream = handle->stream; > > > > - > > > > - return uvc_v4l2_get_format(stream, fmt); > > > > -} > > > > - > > > > -static int uvc_ioctl_g_fmt_vid_out(struct file *file, void *fh, > > > > - struct v4l2_format *fmt) > > > > -{ > > > > - struct uvc_fh *handle = fh; > > > > - struct uvc_streaming *stream = handle->stream; > > > > - > > > > - return uvc_v4l2_get_format(stream, fmt); > > > > -} > > > > - > > > > -static int uvc_ioctl_s_fmt_vid_cap(struct file *file, void *fh, > > > > - struct v4l2_format *fmt) > > > > -{ > > > > - struct uvc_fh *handle = fh; > > > > - struct uvc_streaming *stream = handle->stream; > > > > - int ret; > > > > - > > > > - ret = uvc_acquire_privileges(handle); > > > > - if (ret < 0) > > > > - return ret; > > > > > > Has this now silently disappeared ? > > > > > > > - > > > > - return uvc_v4l2_set_format(stream, fmt); > > > > -} > > > > - > > > > -static int uvc_ioctl_s_fmt_vid_out(struct file *file, void *fh, > > > > - struct v4l2_format *fmt) > > > > -{ > > > > - struct uvc_fh *handle = fh; > > > > - struct uvc_streaming *stream = handle->stream; > > > > - int ret; > > > > - > > > > - ret = uvc_acquire_privileges(handle); > > > > - if (ret < 0) > > > > - return ret; > > > > - > > > > - return uvc_v4l2_set_format(stream, fmt); > > > > -} > > > > - > > > > -static int uvc_ioctl_try_fmt_vid_cap(struct file *file, void *fh, > > > > - struct v4l2_format *fmt) > > > > -{ > > > > - struct uvc_fh *handle = fh; > > > > - struct uvc_streaming *stream = handle->stream; > > > > - struct uvc_streaming_control probe; > > > > - > > > > - return uvc_v4l2_try_format(stream, fmt, &probe, NULL, NULL); > > > > -} > > > > - > > > > -static int uvc_ioctl_try_fmt_vid_out(struct file *file, void *fh, > > > > - struct v4l2_format *fmt) > > > > +static int uvc_ioctl_try_fmt(struct file *file, void *fh, > > > > + struct v4l2_format *fmt) > > > > { > > > > struct uvc_fh *handle = fh; > > > > struct uvc_streaming *stream = handle->stream; > > > > @@ -1544,14 +1476,14 @@ static unsigned long uvc_v4l2_get_unmapped_area(struct file *file, > > > > > > > > const struct v4l2_ioctl_ops uvc_ioctl_ops = { > > > > .vidioc_querycap = uvc_ioctl_querycap, > > > > - .vidioc_enum_fmt_vid_cap = uvc_ioctl_enum_fmt_vid_cap, > > > > - .vidioc_enum_fmt_vid_out = uvc_ioctl_enum_fmt_vid_out, > > > > - .vidioc_g_fmt_vid_cap = uvc_ioctl_g_fmt_vid_cap, > > > > - .vidioc_g_fmt_vid_out = uvc_ioctl_g_fmt_vid_out, > > > > - .vidioc_s_fmt_vid_cap = uvc_ioctl_s_fmt_vid_cap, > > > > - .vidioc_s_fmt_vid_out = uvc_ioctl_s_fmt_vid_out, > > > > - .vidioc_try_fmt_vid_cap = uvc_ioctl_try_fmt_vid_cap, > > > > - .vidioc_try_fmt_vid_out = uvc_ioctl_try_fmt_vid_out, > > > > + .vidioc_enum_fmt_vid_cap = uvc_ioctl_enum_fmt, > > > > + .vidioc_enum_fmt_vid_out = uvc_ioctl_enum_fmt, > > > > + .vidioc_g_fmt_vid_cap = uvc_ioctl_g_fmt, > > > > + .vidioc_g_fmt_vid_out = uvc_ioctl_g_fmt, > > > > + .vidioc_s_fmt_vid_cap = uvc_ioctl_s_fmt, > > > > + .vidioc_s_fmt_vid_out = uvc_ioctl_s_fmt, > > > > + .vidioc_try_fmt_vid_cap = uvc_ioctl_try_fmt, > > > > + .vidioc_try_fmt_vid_out = uvc_ioctl_try_fmt, > > > > Also, if you're removing wrapper, let's do the same for > > uvc_ioctl_g_parm() and uvc_ioctl_s_parm(). Furthermore, please try to > > preserve the order of the function definitions, sorting them as in the > > ioctl_ops structure. > > Do you want the reorder in a different patch to ease the review or in the same? The same is fine with me. > > > > .vidioc_reqbufs = uvc_ioctl_reqbufs, > > > > .vidioc_querybuf = uvc_ioctl_querybuf, > > > > .vidioc_qbuf = uvc_ioctl_qbuf, > > > > > > > > --- > > > > base-commit: 72ad4ff638047bbbdf3232178fea4bec1f429319 > > > > change-id: 20241127-uvc-dup-cap-out-6a03c01e30a3 -- Regards, Laurent Pinchart