Hello.
On 19-01-2011 11:19, Thomas Weber wrote:
The return value of gpio_request is ignored.
This patch adds the check of the return value of gpio_request.
Signed-off-by: Thomas Weber<weber@xxxxxxxxxxxxx>
---
arch/arm/mach-omap2/board-devkit8000.c | 16 ++++++++++++++--
1 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-omap2/board-devkit8000.c b/arch/arm/mach-omap2/board-devkit8000.c
index 9fb416b..4ddd81c 100644
--- a/arch/arm/mach-omap2/board-devkit8000.c
+++ b/arch/arm/mach-omap2/board-devkit8000.c
[...]
@@ -244,13 +246,23 @@ static int devkit8000_twl_gpio_setup(struct device *dev,
/* TWL4030_GPIO_MAX + 0 is "LCD_PWREN" (out, active high) */
devkit8000_lcd_device.reset_gpio = gpio + TWL4030_GPIO_MAX + 0;
- gpio_request(devkit8000_lcd_device.reset_gpio, "LCD_PWREN");
+ ret = gpio_request(devkit8000_lcd_device.reset_gpio, "LCD_PWREN");
+ if (ret < 0) {
+ printk(KERN_ERR "Failed to request GPIO for LCD_PWRN\n");
+ return ret;
+ }
+
/* Disable until needed */
gpio_direction_output(devkit8000_lcd_device.reset_gpio, 0);
/* gpio + 7 is "DVI_PD" (out, active low) */
devkit8000_dvi_device.reset_gpio = gpio + 7;
- gpio_request(devkit8000_dvi_device.reset_gpio, "DVI PowerDown");
+ ret = gpio_request(devkit8000_dvi_device.reset_gpio, "DVI PowerDown");
+ if (ret < 0) {
+ printk(KERN_ERR "Failed to request GPIO for DVI PowerDown\n");
You forgot to call:
gpio_free(devkit8000_lcd_device.reset_gpio);
+ return ret;
+ }
+
/* Disable until needed */
gpio_direction_output(devkit8000_dvi_device.reset_gpio, 0);
WBR, Sergei
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