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[34.88.52.90]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5533787d26esm1590160e87.41.2025.06.02.06.06.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Jun 2025 06:06:35 -0700 (PDT) From: Ricardo Ribalda Date: Mon, 02 Jun 2025 13:06:21 +0000 Subject: [PATCH v2 9/9] media: uvcvideo: Support granular power saving for compat syscalls 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: <20250602-uvc-grannular-invert-v2-9-c871934ad880@chromium.org> References: <20250602-uvc-grannular-invert-v2-0-c871934ad880@chromium.org> In-Reply-To: <20250602-uvc-grannular-invert-v2-0-c871934ad880@chromium.org> To: Laurent Pinchart , Hans de Goede , Mauro Carvalho Chehab , Hans Verkuil Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Ricardo Ribalda X-Mailer: b4 0.14.2 Right now we cannot support granular power saving on compat syscalls because the VIDIOC_*32 NRs defines are not accessible to drivers. Use the v4l2_compat_translate_cmd helper to convert the compat syscall NRs into syscall NRs. Signed-off-by: Ricardo Ribalda Reviewed-by: Hans de Goede --- drivers/media/usb/uvc/uvc_v4l2.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v= 4l2.c index 13388879091c46ff74582226146521b5b5eb3d10..8358ca54b248dd1cf7c984b206b= 8e550cd883e54 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -1237,15 +1237,13 @@ static long uvc_v4l2_pm_ioctl(struct file *file, static long uvc_v4l2_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - /* - * For now, we do not support granular power saving for compat - * syscalls. - */ + unsigned int converted_cmd =3D cmd; + if (in_compat_syscall()) - return uvc_v4l2_pm_ioctl(file, cmd, arg); + converted_cmd =3D v4l2_compat_translate_cmd(cmd); =20 /* The following IOCTLs do need to turn on the camera. */ - switch (cmd) { + switch (converted_cmd) { case UVCIOC_CTRL_QUERY: case VIDIOC_G_CTRL: case VIDIOC_G_EXT_CTRLS: --=20 2.49.0.1266.g31b7d2e469-goog