[PATCH] ARM: mach-mxs/mx28evk: Only register devices if their GPIO requests succeeded
Fabio Estevam
festevam at gmail.com
Tue Sep 13 16:25:19 EDT 2011
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 at freescale.com>
---
arch/arm/mach-mxs/mach-mx28evk.c | 18 ++++++++++++------
1 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c
index 3f86e7a..e5c66a2 100644
--- a/arch/arm/mach-mxs/mach-mx28evk.c
+++ b/arch/arm/mach-mxs/mach-mx28evk.c
@@ -353,7 +353,7 @@ static struct mxs_mmc_platform_data mx28evk_mmc_pdata[] __initdata = {
static void __init mx28evk_init(void)
{
- int ret;
+ int ret, gpio_lcd_error;
mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads));
@@ -378,18 +378,23 @@ static void __init mx28evk_init(void)
}
ret = gpio_request_one(MX28EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
- if (ret)
+ if (ret) {
pr_warn("failed to request gpio lcd-enable: %d\n", ret);
+ gpio_lcd_error = 1;
+ }
else
gpio_set_value(MX28EVK_LCD_ENABLE, 1);
ret = gpio_request_one(MX28EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
- if (ret)
+ if (ret) {
pr_warn("failed to request gpio bl-enable: %d\n", ret);
+ gpio_lcd_error = 1;
+ }
else
gpio_set_value(MX28EVK_BL_ENABLE, 1);
- mx28_add_mxsfb(&mx28evk_mxsfb_pdata);
+ if (!gpio_lcd_error)
+ 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,
@@ -402,8 +407,9 @@ 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);
}
--
1.7.1
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