From: Soham Kute <officialsohamkute@gmail.com>
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,
Soham Kute <officialsohamkute@gmail.com>
Subject: [PATCH] staging: sm750fb: use proper error codes instead of -1
Date: Sun, 1 Mar 2026 10:44:34 +0530 [thread overview]
Message-ID: <20260301051434.28187-1-officialsohamkute@gmail.com> (raw)
Replace magic return value -1 with proper kernel error
codes -EBUSY, -ETIMEDOUT and -EINVAL.
Signed-off-by: Soham Kute <officialsohamkute@gmail.com>
---
drivers/staging/sm750fb/ddk750_swi2c.c | 4 ++--
drivers/staging/sm750fb/sm750_accel.c | 6 +++---
drivers/staging/sm750fb/sm750_hw.c | 4 ++--
3 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/staging/sm750fb/ddk750_swi2c.c b/drivers/staging/sm750fb/ddk750_swi2c.c
index 0ef8d4ff2ef9..d90a93ab8fdc 100644
--- a/drivers/staging/sm750fb/ddk750_swi2c.c
+++ b/drivers/staging/sm750fb/ddk750_swi2c.c
@@ -294,7 +294,7 @@ static long sw_i2c_write_byte(unsigned char data)
if (i < 0xff)
return 0;
else
- return -1;
+ return -ETIMEDOUT;
}
/*
@@ -394,7 +394,7 @@ long sm750_sw_i2c_init(unsigned char clk_gpio, unsigned char data_gpio)
* range is only from [0..63]
*/
if ((clk_gpio > 31) || (data_gpio > 31))
- return -1;
+ return -EINVAL;
if (sm750_get_chip_type() == SM750LE)
return sm750le_i2c_init(clk_gpio, data_gpio);
diff --git a/drivers/staging/sm750fb/sm750_accel.c b/drivers/staging/sm750fb/sm750_accel.c
index 046b9282b24a..fa593d4f31fe 100644
--- a/drivers/staging/sm750fb/sm750_accel.c
+++ b/drivers/staging/sm750fb/sm750_accel.c
@@ -97,7 +97,7 @@ int sm750_hw_fillrect(struct lynx_accel *accel,
* got something error
*/
pr_debug("De engine always busy\n");
- return -1;
+ return -EBUSY;
}
write_dpr(accel, DE_WINDOW_DESTINATION_BASE, base); /* dpr40 */
@@ -264,7 +264,7 @@ int sm750_hw_copyarea(struct lynx_accel *accel,
(sPitch / Bpp & DE_WINDOW_WIDTH_SRC_MASK)); /* dpr3c */
if (accel->de_wait() != 0)
- return -1;
+ return -EBUSY;
write_dpr(accel, DE_SOURCE,
((sx << DE_SOURCE_X_K1_SHIFT) & DE_SOURCE_X_K1_MASK) |
@@ -333,7 +333,7 @@ int sm750_hw_imageblit(struct lynx_accel *accel, const char *pSrcbuf,
ulBytesRemain = ulBytesPerScan & 3;
if (accel->de_wait() != 0)
- return -1;
+ return -EBUSY;
/*
* 2D Source Base.
diff --git a/drivers/staging/sm750fb/sm750_hw.c b/drivers/staging/sm750fb/sm750_hw.c
index ce46f240cbaf..e4b6b254335e 100644
--- a/drivers/staging/sm750fb/sm750_hw.c
+++ b/drivers/staging/sm750fb/sm750_hw.c
@@ -518,7 +518,7 @@ int hw_sm750le_de_wait(void)
return 0;
}
/* timeout error */
- return -1;
+ return -ETIMEDOUT;
}
int hw_sm750_de_wait(void)
@@ -536,7 +536,7 @@ 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
next reply other threads:[~2026-03-01 5:14 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-01 5:14 Soham Kute [this message]
2026-03-02 9:09 ` [PATCH] staging: sm750fb: use proper error codes instead of -1 Dan Carpenter
2026-03-04 8:45 ` [PATCH v2 0/6] staging: sm750fb: fix error return values Soham Kute
2026-03-04 8:45 ` [PATCH 1/6] staging: sm750fb: hw_sm750le_de_wait: return -ETIMEDOUT on timeout Soham Kute
2026-03-04 8:45 ` [PATCH 2/6] staging: sm750fb: sm750_hw_fillrect: propagate de_wait() error Soham Kute
2026-03-04 8:45 ` [PATCH 3/6] staging: sm750fb: sm750_hw_copyarea: " Soham Kute
2026-03-04 14:24 ` Dan Carpenter
2026-03-04 8:45 ` [PATCH 4/6] staging: sm750fb: sm750_hw_imageblit: " Soham Kute
2026-03-04 14:25 ` Dan Carpenter
2026-03-04 8:45 ` [PATCH 5/6] staging: sm750fb: sw_i2c_write_byte: return -ETIMEDOUT on timeout Soham Kute
2026-03-04 14:29 ` Dan Carpenter
2026-03-04 8:45 ` [PATCH 6/6] staging: sm750fb: sm750_sw_i2c_init: return -EINVAL for invalid GPIO Soham Kute
2026-03-04 14:30 ` Dan Carpenter
2026-03-04 17:35 ` [PATCH 1/6] staging: sm750fb: hw_sm750le_de_wait: return -ETIMEDOUT on timeout Soham Kute
2026-03-04 17:35 ` [PATCH 2/6] staging: sm750fb: sm750_hw_fillrect: propagate de_wait() error Soham Kute
2026-03-05 5:34 ` Dan Carpenter
2026-03-04 17:35 ` [PATCH 3/6] staging: sm750fb: sm750_hw_copyarea: " Soham Kute
2026-03-04 17:35 ` [PATCH 4/6] staging: sm750fb: sm750_hw_imageblit: " Soham Kute
2026-03-04 17:35 ` [PATCH 5/6] staging: sm750fb: sw_i2c_write_byte: return -EIO on failure Soham Kute
2026-03-04 17:35 ` [PATCH 6/6] staging: sm750fb: sm750_sw_i2c_init: return -EINVAL for invalid GPIO Soham Kute
2026-03-05 5:48 ` Dan Carpenter
2026-03-05 5:33 ` [PATCH 1/6] staging: sm750fb: hw_sm750le_de_wait: return -ETIMEDOUT on timeout Dan Carpenter
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