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Mon, 03 Mar 2025 07:50:56 -0800 (PST) X-Google-Smtp-Source: AGHT+IHpG/UQJz56LDbfAhf/kiJEcE14KnocWAUI5oNLuJ5COA4PPwaqHlXug2SOBV0xP2U4dgeukw== X-Received: by 2002:a05:6402:40d1:b0:5e0:87eb:956b with SMTP id 4fb4d7f45d1cf-5e4d6b68f0dmr12880963a12.22.1741017055914; Mon, 03 Mar 2025 07:50:55 -0800 (PST) Received: from [10.40.98.122] ([78.108.130.194]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5e533a89a21sm3099850a12.60.2025.03.03.07.50.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 03 Mar 2025 07:50:55 -0800 (PST) Message-ID: <2cd42ab9-8079-4bd6-b650-42c2e894592a@redhat.com> Date: Mon, 3 Mar 2025 16:50:54 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/3] media: uvcvideo: Send control events for partial succeeds To: Ricardo Ribalda , Laurent Pinchart , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, stable@kernel.org References: <20250224-uvc-data-backup-v2-0-de993ed9823b@chromium.org> <20250224-uvc-data-backup-v2-2-de993ed9823b@chromium.org> Content-Language: en-US, nl From: Hans de Goede In-Reply-To: <20250224-uvc-data-backup-v2-2-de993ed9823b@chromium.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi, On 24-Feb-25 11:34, Ricardo Ribalda wrote: > Today, when we are applying a change to entities A, B. If A succeeds and B > fails the events for A are not sent. > > This change changes the code so the events for A are send right after > they happen. > > Cc: stable@kernel.org > Fixes: b4012002f3a3 ("[media] uvcvideo: Add support for control events") > Signed-off-by: Ricardo Ribalda Thanks, patch looks good to me: Reviewed-by: Hans de Goede Regards, Hans > --- > drivers/media/usb/uvc/uvc_ctrl.c | 12 +++++++++--- > 1 file changed, 9 insertions(+), 3 deletions(-) > > diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c > index f2484f6d21c1..7d074686eef4 100644 > --- a/drivers/media/usb/uvc/uvc_ctrl.c > +++ b/drivers/media/usb/uvc/uvc_ctrl.c > @@ -1705,7 +1705,9 @@ static bool uvc_ctrl_xctrls_has_control(const struct v4l2_ext_control *xctrls, > } > > static void uvc_ctrl_send_events(struct uvc_fh *handle, > - const struct v4l2_ext_control *xctrls, unsigned int xctrls_count) > + struct uvc_entity *entity, > + const struct v4l2_ext_control *xctrls, > + unsigned int xctrls_count) > { > struct uvc_control_mapping *mapping; > struct uvc_control *ctrl; > @@ -1716,6 +1718,9 @@ static void uvc_ctrl_send_events(struct uvc_fh *handle, > u32 changes = V4L2_EVENT_CTRL_CH_VALUE; > > ctrl = uvc_find_control(handle->chain, xctrls[i].id, &mapping); > + if (ctrl->entity != entity) > + continue; > + > if (ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS) > /* Notification will be sent from an Interrupt event. */ > continue; > @@ -1954,11 +1959,12 @@ int __uvc_ctrl_commit(struct uvc_fh *handle, int rollback, > uvc_ctrl_find_ctrl_idx(entity, ctrls, > err_ctrl); > goto done; > + } else if (ret > 0 && !rollback) { > + uvc_ctrl_send_events(handle, entity, > + ctrls->controls, ctrls->count); > } > } > > - if (!rollback) > - uvc_ctrl_send_events(handle, ctrls->controls, ctrls->count); > ret = 0; > done: > mutex_unlock(&chain->ctrl_mutex); >