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@iscas.ac.cn>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20240705092800.3221159-1-nichen@iscas.ac.cn
Signed-off-by: Lee Jones <lee@kernel.org>

diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
index dd0874f..4175a46 100644 (file)
--- 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;