diff --git a/arch/arm/mach-pxa/palmtc.c b/arch/arm/mach-pxa/palmtc.c
index bb2cc0dd44ec5c84a47dd3d2754726ed140f3ef7..0b92291a58f61b8c922b57fb4a89848af52129ca 100644
--- a/arch/arm/mach-pxa/palmtc.c
+++ b/arch/arm/mach-pxa/palmtc.c
@@ -292,10 +292,10 @@ const static unsigned int palmtc_keypad_col_gpios[] = {
 
 static struct matrix_keypad_platform_data palmtc_keypad_platform_data = {
 	.keymap_data	= &palmtc_keymap_data,
-	.col_gpios	= palmtc_keypad_row_gpios,
-	.num_col_gpios	= 12,
-	.row_gpios	= palmtc_keypad_col_gpios,
-	.num_row_gpios	= 4,
+	.row_gpios	= palmtc_keypad_row_gpios,
+	.num_row_gpios	= ARRAY_SIZE(palmtc_keypad_row_gpios),
+	.col_gpios	= palmtc_keypad_col_gpios,
+	.num_col_gpios	= ARRAY_SIZE(palmtc_keypad_col_gpios),
 	.active_low	= 1,
 
 	.debounce_ms		= 20,