diff mbox

bfin: check if an empty array pointer is passed to pinmux request API

Message ID 1423114434-10063-1-git-send-email-sonic.adi@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

sonic zhang Feb. 5, 2015, 5:33 a.m. UTC 
From: Sonic Zhang <sonic.zhang@analog.com>

to avoid possible indigestion

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
---
 arch/blackfin/kernel/bfin_gpio.c |    4 ++++
 1 file changed, 4 insertions(+)
diff mbox

Patch

diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c
index a017359..153841f 100644
--- a/arch/blackfin/kernel/bfin_gpio.c
+++ b/arch/blackfin/kernel/bfin_gpio.c
@@ -730,6 +730,8 @@  int peripheral_request_list(const unsigned short per[], const char *label)
 	u16 cnt;
 	int ret;
 
+	if (per == NULL)
+		return -ENODEV;
 	for (cnt = 0; per[cnt] != 0; cnt++) {
 
 		ret = peripheral_request(per[cnt], label);
@@ -778,6 +780,8 @@  EXPORT_SYMBOL(peripheral_free);
 void peripheral_free_list(const unsigned short per[])
 {
 	u16 cnt;
+	if (per == NULL)
+		return;
 	for (cnt = 0; per[cnt] != 0; cnt++)
 		peripheral_free(per[cnt]);
 }