diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 1c5413fc6e74..eed95eaf58cd 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -71,6 +71,7 @@ EXPORT_SYMBOL(get_memclk_frequency_10khz);
 /*
  * Handy function to set GPIO alternate functions
  */
+int pxa_last_gpio;
 
 int pxa_gpio_mode(int gpio_mode)
 {
@@ -79,7 +80,7 @@ int pxa_gpio_mode(int gpio_mode)
 	int fn = (gpio_mode & GPIO_MD_MASK_FN) >> 8;
 	int gafr;
 
-	if (gpio > PXA_LAST_GPIO)
+	if (gpio > pxa_last_gpio)
 		return -EINVAL;
 
 	local_irq_save(flags);
diff --git a/arch/arm/mach-pxa/generic.h b/arch/arm/mach-pxa/generic.h
index 5b11741cccff..25bd9bf727b6 100644
--- a/arch/arm/mach-pxa/generic.h
+++ b/arch/arm/mach-pxa/generic.h
@@ -20,6 +20,7 @@ extern void __init pxa27x_init_irq(void);
 extern void __init pxa_map_io(void);
 
 extern unsigned int get_clk_frequency_khz(int info);
+extern int pxa_last_gpio;
 
 #define SET_BANK(__nr,__start,__size) \
 	mi->bank[__nr].start = (__start), \
diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index ae2ae08032d7..3d95442d4168 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -349,6 +349,8 @@ void __init pxa_init_irq_gpio(int gpio_nr)
 {
 	int irq, i;
 
+	pxa_last_gpio = gpio_nr - 1;
+
 	/* clear all GPIO edge detects */
 	for (i = 0; i < gpio_nr; i += 32) {
 		GFER(i) = 0;
diff --git a/include/asm-arm/arch-pxa/irqs.h b/include/asm-arm/arch-pxa/irqs.h
index a07fe0f928cd..1bcc7632b46c 100644
--- a/include/asm-arm/arch-pxa/irqs.h
+++ b/include/asm-arm/arch-pxa/irqs.h
@@ -66,12 +66,6 @@
 #define IRQ_TO_GPIO_2_x(i)	((i) - PXA_GPIO_IRQ_BASE)
 #define IRQ_TO_GPIO(i)	(((i) < IRQ_GPIO(2)) ? ((i) - IRQ_GPIO0) : IRQ_TO_GPIO_2_x(i))
 
-#if defined(CONFIG_PXA25x)
-#define PXA_LAST_GPIO	84
-#elif defined(CONFIG_PXA27x)
-#define PXA_LAST_GPIO	127
-#endif
-
 /*
  * The next 16 interrupts are for board specific purposes.  Since
  * the kernel can only run on one machine at a time, we can re-use