linux-kernel - Re: [PATCH v6 0/5] media: uvcvideo: Two +1 fixes for async controls

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Message-ID: <e3316372-d109-4d2e-ad2b-8989babdf546@redhat.com>
Date: Mon, 9 Dec 2024 12:01:16 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: Ricardo Ribalda <ribalda@...omium.org>,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Guennadi Liakhovetski <guennadi.liakhovetski@...el.com>
Cc: Hans Verkuil <hverkuil@...all.nl>,
 Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
 linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
 stable@...r.kernel.org
Subject: Re: [PATCH v6 0/5] media: uvcvideo: Two +1 fixes for async controls

Hi,

On 3-Dec-24 10:20 PM, Ricardo Ribalda wrote:
> This patchset fixes two +1 bugs with the async controls for the uvc driver.
> 
> They were found while implementing the granular PM, but I am sending
> them as a separate patches, so they can be reviewed sooner. They fix
> real issues in the driver that need to be taken care.
> 
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>

Ricardo, Thank you for your patches.

I have merged patches 1-4 into:

https://gitlab.freedesktop.org/linux-media/users/uvc/-/commits/next/

now.

Regards,

Hans



> ---
> Changes in v6:
> - Swap order of patches
> - Use uvc_ctrl_set_handle again
> - Move loaded=0 to uvc_ctrl_status_event()
> - Link to v5: https://lore.kernel.org/r/20241202-uvc-fix-async-v5-0-6658c1fe312b@chromium.org
> 
> Changes in v5:
> - Move set handle to the entity_commit
> - Replace uvc_ctrl_set_handle with get/put_handle.
> - Add a patch to flush the cache of async controls.
> - Link to v4: https://lore.kernel.org/r/20241129-uvc-fix-async-v4-0-f23784dba80f@chromium.org
> 
> Changes in v4:
> - Fix implementation of uvc_ctrl_set_handle.
> - Link to v3: https://lore.kernel.org/r/20241129-uvc-fix-async-v3-0-ab675ce66db7@chromium.org
> 
> Changes in v3:
> - change again! order of patches.
> - Introduce uvc_ctrl_set_handle.
> - Do not change ctrl->handle if it is not NULL.
> 
> Changes in v2:
> - Annotate lockdep
> - ctrl->handle != handle
> - Change order of patches
> - Move documentation of mutex
> - Link to v1: https://lore.kernel.org/r/20241127-uvc-fix-async-v1-0-eb8722531b8c@chromium.org
> 
> ---
> Ricardo Ribalda (5):
>       media: uvcvideo: Only save async fh if success
>       media: uvcvideo: Remove redundant NULL assignment
>       media: uvcvideo: Remove dangling pointers
>       media: uvcvideo: Annotate lock requirements for uvc_ctrl_set
>       media: uvcvideo: Flush the control cache when we get an event
> 
>  drivers/media/usb/uvc/uvc_ctrl.c | 83 ++++++++++++++++++++++++++++++++++------
>  drivers/media/usb/uvc/uvc_v4l2.c |  2 +
>  drivers/media/usb/uvc/uvcvideo.h |  9 ++++-
>  3 files changed, 82 insertions(+), 12 deletions(-)
> ---
> base-commit: 291a8d98186f0a704cb954855d2ae3233971f07d
> change-id: 20241127-uvc-fix-async-2c9d40413ad8
> 
> Best regards,