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[1.161.137.250]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2d022bf4c0bsm17606485ad.59.2026.07.29.17.31.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Jul 2026 17:31:57 -0700 (PDT) From: Hung-Chun Tseng To: sumit.semwal@linaro.org, christian.koenig@amd.com Cc: linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, Hung-Chun Tseng Subject: [PATCH] dma-buf: fix stale return value documentation for dma_buf_set_name() Date: Thu, 30 Jul 2026 08:31:53 +0800 Message-ID: <20260730003153.4030818-1-alan.tseng.cs@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The kernel-doc for dma_buf_set_name() documents an -EBUSY return for the case where the dma-buf is already attached to devices. The function has no such path: it returns 0 on success, or the error from strndup_user(). kernel-doc does not validate prose, so scripts/kernel-doc does not report this. Signed-off-by: Hung-Chun Tseng --- drivers/dma-buf/dma-buf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index d504c636d..324f4f0c8 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -413,8 +413,8 @@ static __poll_t dma_buf_poll(struct file *file, poll_table *poll) * @buf: [in] A piece of userspace memory that contains the name of * the dma-buf. * - * Returns 0 on success. If the dma-buf buffer is already attached to - * devices, return -EBUSY. + * Returns 0 on success, or a negative error code from strndup_user() if the + * name cannot be copied in. * */ static long dma_buf_set_name(struct dma_buf *dmabuf, const char __user *buf) -- 2.43.0