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Message-Id: <20240705092800.3221159-1-nichen@iscas.ac.cn>
Date: Fri, 5 Jul 2024 17:28:00 +0800
From: Chen Ni <nichen@...as.ac.cn>
To: lee@...nel.org,
daniel.thompson@...aro.org,
jingoohan1@...il.com,
deller@....de
Cc: dri-devel@...ts.freedesktop.org,
linux-fbdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
Chen Ni <nichen@...as.ac.cn>
Subject: [PATCH v2] backlight: l4f00242t03: Add check for spi_setup
Add check for the return value of spi_setup() and return the error
if it fails in order to catch the error.
Signed-off-by: Chen Ni <nichen@...as.ac.cn>
---
Changelog:
v1 -> v2:
1. Use dev_err_probe() to match other error paths
---
drivers/video/backlight/l4f00242t03.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
index dd0874f8c7ff..4175a4603071 100644
--- a/drivers/video/backlight/l4f00242t03.c
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -166,6 +166,7 @@ static const struct lcd_ops l4f_ops = {
static int l4f00242t03_probe(struct spi_device *spi)
{
struct l4f00242t03_priv *priv;
+ int ret;
priv = devm_kzalloc(&spi->dev, sizeof(struct l4f00242t03_priv),
GFP_KERNEL);
@@ -174,7 +175,9 @@ static int l4f00242t03_probe(struct spi_device *spi)
spi_set_drvdata(spi, priv);
spi->bits_per_word = 9;
- spi_setup(spi);
+ ret = spi_setup(spi);
+ if (ret < 0)
+ return dev_err_probe(&spi->dev, ret, "Unable to setup spi.\n");
priv->spi = spi;
--
2.25.1
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