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[34.88.69.27]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5a156366a7fsm3481473e87.76.2026.03.16.06.34.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Mar 2026 06:34:47 -0700 (PDT) From: Ricardo Ribalda Date: Mon, 16 Mar 2026 13:34:45 +0000 Subject: [PATCH v3 2/4] media: uvcvideo: Announce deprecation intentions for UVCIOC_CTRL_MAP 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-Transfer-Encoding: quoted-printable Message-Id: <20260316-uvcdynctrl-v3-2-19cd4657e1f3@chromium.org> References: <20260316-uvcdynctrl-v3-0-19cd4657e1f3@chromium.org> In-Reply-To: <20260316-uvcdynctrl-v3-0-19cd4657e1f3@chromium.org> To: Laurent Pinchart , Hans de Goede , Mauro Carvalho Chehab , Greg Kroah-Hartman Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Ricardo Ribalda X-Mailer: b4 0.14.3 The UVCIOC_CTRL_MAP lets userspace create a mapping for a custom control. This mapping is usually created by the uvcdynctrl userspace utility. We would like to get the mappings into the driver instead. Reviewed-by: Laurent Pinchart Signed-off-by: Ricardo Ribalda --- Documentation/userspace-api/media/drivers/uvcvideo.rst | 2 ++ drivers/media/usb/uvc/uvc_v4l2.c | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/Documentation/userspace-api/media/drivers/uvcvideo.rst b/Docum= entation/userspace-api/media/drivers/uvcvideo.rst index dbb30ad389ae..b09d2f8ba66e 100644 --- a/Documentation/userspace-api/media/drivers/uvcvideo.rst +++ b/Documentation/userspace-api/media/drivers/uvcvideo.rst @@ -109,6 +109,8 @@ IOCTL reference UVCIOC_CTRL_MAP - Map a UVC control to a V4L2 control ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ =20 +**This IOCTL is deprecated and will be eventually removed** + Argument: struct uvc_xu_control_mapping =20 **Description**: diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v= 4l2.c index d5860661c115..f9049e9c0d3a 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -1046,6 +1046,8 @@ static long uvc_ioctl_default(struct file *file, void= *priv, bool valid_prio, switch (cmd) { /* Dynamic controls. */ case UVCIOC_CTRL_MAP: + pr_warn_once("uvcvideo: " DEPRECATED + "UVCIOC_CTRL_MAP ioctl will be eventually removed.\n"); return uvc_ioctl_xu_ctrl_map(chain, arg); =20 case UVCIOC_CTRL_QUERY: @@ -1160,6 +1162,8 @@ static long uvc_v4l2_compat_ioctl32(struct file *file, =20 switch (cmd) { case UVCIOC_CTRL_MAP32: + pr_warn_once("uvcvideo: " DEPRECATED + "UVCIOC_CTRL_MAP32 ioctl will be eventually removed.\n"); ret =3D uvc_v4l2_get_xu_mapping(&karg.xmap, up); if (ret) break; --=20 2.53.0.851.ga537e3e6e9-goog