OMAP: GPIO: Make omap_gpio_show_rev bank specific
Otherwise GPIO init on 16xx may try to access uninitialized GPIO
bank as the MPUIO bank does not have a revision register.
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 48bccf2..e474190 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -1694,16 +1694,16 @@
static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS];
#endif
-static void __init omap_gpio_show_rev(void)
+static void __init omap_gpio_show_rev(struct gpio_bank *bank)
{
u32 rev;
- if (cpu_is_omap16xx())
- rev = __raw_readw(gpio_bank[1].base + OMAP1610_GPIO_REVISION);
+ if (cpu_is_omap16xx() && !(bank->method != METHOD_MPUIO))
+ rev = __raw_readw(bank->base + OMAP1610_GPIO_REVISION);
else if (cpu_is_omap24xx() || cpu_is_omap34xx())
- rev = __raw_readl(gpio_bank[0].base + OMAP24XX_GPIO_REVISION);
+ rev = __raw_readl(bank->base + OMAP24XX_GPIO_REVISION);
else if (cpu_is_omap44xx())
- rev = __raw_readl(gpio_bank[0].base + OMAP4_GPIO_REVISION);
+ rev = __raw_readl(bank->base + OMAP4_GPIO_REVISION);
else
return;
@@ -1963,7 +1963,7 @@
}
}
- omap_gpio_show_rev();
+ omap_gpio_show_rev(bank);
return 0;
}