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>

1 files changed, 14 insertions, 1 deletions

diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c
index efa27cb1b721..a0bfca921712 100644
--- a/arch/blackfin/mach-common/ints-priority.c
+++ b/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))