Blackfin arch: Request the gpio resource when making it as an irq pin, avoiding override it.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

arch/blackfin/kernel/bfin_gpio.c

@@ -1257,10 +1257,10 @@ static int gpio_proc_read(char *buf, char **start, off_t offset,
 
 	for (c = 0; c < MAX_RESOURCES; c++) {
 		if (!check_gpio(c) && (reserved_gpio_map[gpio_bank(c)] & gpio_bit(c)))
-			len = sprintf(buf, "GPIO_%d: %s \t\tGPIO %s\n", c,
+			len = sprintf(buf, "GPIO_%d: \t%s \t\tGPIO %s\n", c,
 				 get_label(c), get_gpio_dir(c) ? "OUTPUT" : "INPUT");
 		else if (reserved_peri_map[gpio_bank(c)] & gpio_bit(c))
-			len = sprintf(buf, "GPIO_%d: %s \t\tPeripheral\n", c, get_label(c));
+			len = sprintf(buf, "GPIO_%d: \t%s \t\tPeripheral\n", c, get_label(c));
 		else
 			continue;
 		buf += len;

arch/blackfin/mach-common/ints-priority.c

@@ -437,8 +437,15 @@ static void bfin_gpio_irq_shutdown(unsigned int irq)
 
 static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
 {
+	int ret;
+	char buf[16];
 	u32 gpionr = irq_to_gpio(irq);
 
+	snprintf(buf, 16, "gpio-irq%d", irq);
+	ret = bfin_gpio_request(gpionr, buf);
+	if (ret)
+		return ret;
+
 	if (type == IRQ_TYPE_PROBE) {
 		/* only probe unenabled GPIO interrupt lines */
 		if (__test_bit(gpionr, gpio_enabled))
@@ -738,7 +745,8 @@ static void bfin_gpio_irq_shutdown(unsigned int irq)
 
 static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
 {
-
+	int ret;
+	char buf[16];
 	u32 gpionr = irq_to_gpio(irq);
 	u32 pint_val = irq2pint_lut[irq - SYS_IRQS];
 	u32 pintbit = PINT_BIT(pint_val);
@@ -747,6 +755,11 @@ static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
 	if (pint_val == IRQ_NOT_AVAIL)
 		return -ENODEV;
 
+	snprintf(buf, 16, "gpio-irq%d", irq);
+	ret = bfin_gpio_request(gpionr, buf);
+	if (ret)
+		return ret;
+
 	if (type == IRQ_TYPE_PROBE) {
 		/* only probe unenabled GPIO interrupt lines */
 		if (__test_bit(gpionr, gpio_enabled))