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From: Axel Lin on 3 May 2010 02:50

This patch includes below fixes for properly error handling:
1. In the case of kzalloc failure, simple return -ENOMEM instead of goto
err. ( priv is NULL in this case )
2. In the case of gpio_request fail for reset_gpio and data_enable_gpio,
properly release resources by goto err and err2 respectively.

Signed-off-by: Axel Lin <axel.lin(a)gmail.com>
---
drivers/video/backlight/l4f00242t03.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/video/backlight/l4f00242t03.c
b/drivers/video/backlight/l4f00242t03.c
index bcdb12c..a4632db 100644
--- a/drivers/video/backlight/l4f00242t03.c
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -125,8 +125,7 @@ static int __devinit l4f00242t03_probe(struct
spi_device *spi)

if (priv == NULL) {
dev_err(&spi->dev, "No memory for this device.\n");
- ret = -ENOMEM;
- goto err;
+ return -ENOMEM;
}

dev_set_drvdata(&spi->dev, priv);
@@ -139,7 +138,7 @@ static int __devinit l4f00242t03_probe(struct
spi_device *spi)
if (ret) {
dev_err(&spi->dev,
"Unable to get the lcd l4f00242t03 reset gpio.\n");
- return ret;
+ goto err;
}

ret = gpio_direction_output(pdata->reset_gpio, 1);
@@ -151,7 +150,7 @@ static int __devinit l4f00242t03_probe(struct
spi_device *spi)
if (ret) {
dev_err(&spi->dev,
"Unable to get the lcd l4f00242t03 data en gpio.\n");
- return ret;
+ goto err2;
}

ret = gpio_direction_output(pdata->data_enable_gpio, 0);
--
1.5.4.3



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Prev: sdhci-pltfm: Do not print errors in case of an extended iomem size
Next: [tip:x86/urgent] x86: Fix parse_reservetop() build failure on certain configs