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Sat, 11 Apr 2026 17:03:04 -0700 (PDT) Received: from localhost.localdomain ([76.32.119.210]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-12c3459f7ffsm8609844c88.3.2026.04.11.17.03.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 11 Apr 2026 17:03:04 -0700 (PDT) From: Hungyu Lin To: thierry.reding@gmail.com, jonathanh@nvidia.com, skomatineni@nvidia.com, luca.ceresoli@bootlin.com Cc: mchehab@kernel.org, gregkh@linuxfoundation.org, linux-media@vger.kernel.org, linux-tegra@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Hungyu Lin Subject: [PATCH] media: tegra-video: vi: fix invalid u32 return value in format lookup Date: Sun, 12 Apr 2026 00:02:45 +0000 Message-Id: <20260412000245.26696-1-dennylin0707@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit tegra_get_format_fourcc_by_idx() returns a u32 but uses -EINVAL to signal an out-of-bounds index. This results in a large unsigned value being returned, which may be interpreted as a valid fourcc. Return 0 instead to indicate an invalid format. Callers assign the return value directly to pixelformat, so returning an error code encoded in u32 is unsafe. Signed-off-by: Hungyu Lin --- drivers/staging/media/tegra-video/vi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c index 9c0b38585d63..966792a6ec19 100644 --- a/drivers/staging/media/tegra-video/vi.c +++ b/drivers/staging/media/tegra-video/vi.c @@ -81,7 +81,7 @@ static u32 tegra_get_format_fourcc_by_idx(struct tegra_vi *vi, unsigned int index) { if (index >= vi->soc->nformats) - return -EINVAL; + return 0; return vi->soc->video_formats[index].fourcc; } -- 2.34.1