[PATCH v2 1/2] staging: sm750fb: return -ETIMEDOUT on timeout in de_wait functions

Hungyu Lin
2026-04-09T15:58:48Z

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 <dennylin0707@gmail.com>
---
drivers/staging/sm750fb/sm750_hw.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/sm750fb/sm750_hw.c b/drivers/staging/sm750fb/sm750_hw.c
index a2798d428663..3809401baa3a 100644
--- a/drivers/staging/sm750fb/sm750_hw.c
+++ b/drivers/staging/sm750fb/sm750_hw.c
@@ -502,7 +502,7 @@ int hw_sm750le_de_wait(void)
return 0;
}
/* timeout error */
- return -1;
+ return -ETIMEDOUT;
}

int hw_sm750_de_wait(void)
@@ -520,7 +520,7 @@ int hw_sm750_de_wait(void)
return 0;
}
/* timeout error */
- return -1;
+ return -ETIMEDOUT;
}

int hw_sm750_pan_display(struct lynxfb_crtc *crtc,
--
2.34.1