ARM: S3C2440: fix boot failure introduced by recent changes in gpiolib
authorAbdoulaye Walsimou Gaye <awg@embtoolkit.org>
Sat, 16 Oct 2010 11:55:52 +0000 (13:55 +0200)
committerBen Dooks <ben-linux@fluff.org>
Fri, 29 Oct 2010 23:21:37 +0000 (00:21 +0100)
Recent changes in s3c gpio break mini2440 board and may be others.
The problem is that mach-mini2440.c: mini2440_init()
(where we call s3c_gpio_setpull()) is called before s3c2440.c: s3c2440_init()
(where we initialize s3c24xx_gpiocfg_default.set_pull function pointer).
This causes dereferencing of NULL pointer at boot time and a kernel panic.

Signed-off-by: Abdoulaye Walsimou Gaye <awg@embtoolkit.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
arch/arm/plat-s3c24xx/gpiolib.c

index 4c0896f2572d1ac1494920feb5805eb65b58e7bb..ae9d3c2403f052862efccef73e9057392c999ff9 100644 (file)
@@ -87,6 +87,8 @@ static struct s3c_gpio_cfg s3c24xx_gpiocfg_banka = {
 struct s3c_gpio_cfg s3c24xx_gpiocfg_default = {
        .set_config     = s3c_gpio_setcfg_s3c24xx,
        .get_config     = s3c_gpio_getcfg_s3c24xx,
+       .set_pull       = s3c_gpio_setpull_1up,
+       .get_pull       = s3c_gpio_getpull_1up,
 };
 
 struct s3c_gpio_chip s3c24xx_gpios[] = {