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ARM: mach-mxs/mx28evk: Only register devices if their GPIO requests succeeded 

Currently framebuffer and MMC devices are registered even if their associated
GPIO pins fail to be requested.

Change the logic so that the registration of such devices only occurs if their
GPIO requests succeeded.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Fabio Estevam 2011-09-14 10:20:25 -03:00 committed by Sascha Hauer
parent 25c038ee0d
commit a35b91474c
1 changed files with 11 additions and 12 deletions
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23
arch/arm/mach-mxs/mach-mx28evk.c
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@ -351,6 +351,11 @@ static struct mxs_mmc_platform_data mx28evk_mmc_pdata[] __initdata = {
},
};
static struct gpio mx28evk_lcd_gpios[] = {
{ MX28EVK_LCD_ENABLE, GPIOF_OUT_INIT_HIGH, "lcd-enable" },
{ MX28EVK_BL_ENABLE, GPIOF_OUT_INIT_HIGH, "bl-enable" },
};
static void __init mx28evk_init(void)
{
int ret;
@ -377,19 +382,12 @@ static void __init mx28evk_init(void)
mx28_add_flexcan(1, &mx28evk_flexcan_pdata[1]);
}
ret = gpio_request_one(MX28EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
ret = gpio_request_array(mx28evk_lcd_gpios,
ARRAY_SIZE(mx28evk_lcd_gpios));
if (ret)
pr_warn("failed to request gpio lcd-enable: %d\n", ret);
pr_warn("failed to request gpio pins for lcd: %d\n", ret);
else
gpio_set_value(MX28EVK_LCD_ENABLE, 1);
ret = gpio_request_one(MX28EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
if (ret)
pr_warn("failed to request gpio bl-enable: %d\n", ret);
else
gpio_set_value(MX28EVK_BL_ENABLE, 1);
mx28_add_mxsfb(&mx28evk_mxsfb_pdata);
mx28_add_mxsfb(&mx28evk_mxsfb_pdata);
/* power on mmc slot by writing 0 to the gpio */
ret = gpio_request_one(MX28EVK_MMC0_SLOT_POWER, GPIOF_OUT_INIT_LOW,
@ -402,7 +400,8 @@ static void __init mx28evk_init(void)
"mmc1-slot-power");
if (ret)
pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret);
mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]);
else
mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]);
gpio_led_register_device(0, &mx28evk_led_data);
}