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Sun, 26 Apr 2026 22:47:53 -0700 (PDT) From: Hungyu Lin To: sudipm.mukherjee@gmail.com, teddy.wang@siliconmotion.com, gregkh@linuxfoundation.org Cc: linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Hungyu Lin Subject: [PATCH v3 1/2] staging: sm750fb: return -ETIMEDOUT on timeout in de_wait functions Date: Mon, 27 Apr 2026 05:46:56 +0000 Message-Id: <20260427054657.758-2-dennylin0707@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260427054657.758-1-dennylin0707@gmail.com> References: <20260427054657.758-1-dennylin0707@gmail.com> 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 hw_sm750le_de_wait() and hw_sm750_de_wait() functions return -1 when a timeout occurs. Replace these with -ETIMEDOUT to use a proper errno value and better describe the error condition. All callers check the return value as non-zero, so this change does not alter existing behavior. Signed-off-by: Hungyu Lin --- drivers/staging/sm750fb/sm750_hw.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/staging/sm750fb/sm750_hw.c b/drivers/staging/sm750fb/sm750_hw.c index a2798d428663..ab3d4a2bf1a6 100644 --- a/drivers/staging/sm750fb/sm750_hw.c +++ b/drivers/staging/sm750fb/sm750_hw.c @@ -501,8 +501,8 @@ int hw_sm750le_de_wait(void) (DE_STATE2_DE_FIFO_EMPTY | DE_STATE2_DE_MEM_FIFO_EMPTY)) return 0; } - /* timeout error */ - return -1; + + return -ETIMEDOUT; } int hw_sm750_de_wait(void) @@ -519,8 +519,8 @@ int hw_sm750_de_wait(void) (SYSTEM_CTRL_DE_FIFO_EMPTY | SYSTEM_CTRL_DE_MEM_FIFO_EMPTY)) return 0; } - /* timeout error */ - return -1; + + return -ETIMEDOUT; } int hw_sm750_pan_display(struct lynxfb_crtc *crtc, -- 2.34.1