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[34.88.141.166]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-553ac11ff5dsm1568020e87.31.2025.06.16.08.29.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Jun 2025 08:29:20 -0700 (PDT) From: Ricardo Ribalda Date: Mon, 16 Jun 2025 15:29:18 +0000 Subject: [PATCH v7 5/5] media: venus: vdec: Make the range of us_per_frame explicit 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: <20250616-test-v7-5-b8c0f98494fa@chromium.org> References: <20250616-test-v7-0-b8c0f98494fa@chromium.org> In-Reply-To: <20250616-test-v7-0-b8c0f98494fa@chromium.org> To: Vikash Garodia , Dikshita Agarwal , Bryan O'Donoghue , Mauro Carvalho Chehab , Stanimir Varbanov , Hans Verkuil Cc: linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Ricardo Ribalda X-Mailer: b4 0.14.2 Fps bigger than 0.000232829 fps, this fits in a 32 bit us_per_frame. There is no need to do a 64 bit division here. Also, the driver only works with whole fps. Found by cocci: drivers/media/platform/qcom/venus/vdec.c:488:1-7: WARNING: do_div() does a = 64-by-32 division, please consider using div64_u64 instead. Reviewed-by: Vikash Garodia Reviewed-by: Bryan O'Donoghue Tested-by: Bryan O'Donoghue # qrb5615-rb5 Signed-off-by: Ricardo Ribalda --- drivers/media/platform/qcom/venus/vdec.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platf= orm/qcom/venus/vdec.c index 7d6612234d18a49573dc502d48ee61a900b63194..6042eb1e8705196b754dffc16bd= b714378bb4cd4 100644 --- a/drivers/media/platform/qcom/venus/vdec.c +++ b/drivers/media/platform/qcom/venus/vdec.c @@ -484,8 +484,7 @@ static int vdec_s_parm(struct file *file, void *fh, str= uct v4l2_streamparm *a) do_div(us_per_frame, timeperframe->denominator); =20 us_per_frame =3D clamp(us_per_frame, 1, USEC_PER_SEC); - fps =3D (u64)USEC_PER_SEC; - do_div(fps, us_per_frame); + fps =3D USEC_PER_SEC / (u32)us_per_frame; fps =3D min(VENUS_MAX_FPS, fps); =20 inst->fps =3D fps; --=20 2.50.0.rc1.591.g9c95f17f64-goog