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-rw-r--r--arch/microblaze/kernel/reset.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/microblaze/kernel/reset.c b/arch/microblaze/kernel/reset.c
index 88a01636f785..6ce60fb24ac5 100644
--- a/arch/microblaze/kernel/reset.c
+++ b/arch/microblaze/kernel/reset.c
@@ -28,6 +28,7 @@ void of_platform_reset_gpio_probe(void)
if (!gpio_is_valid(handle)) {
printk(KERN_INFO "Skipping unavailable RESET gpio %d (%s)\n",
handle, "reset");
+ return;
}
ret = gpio_request(handle, "reset");
@@ -60,7 +61,10 @@ err:
static void gpio_system_reset(void)
{
- gpio_set_value(handle, 1 - reset_val);
+ if (gpio_is_valid(handle))
+ gpio_set_value(handle, 1 - reset_val);
+ else
+ pr_notice("Reset GPIO unavailable - halting!\n");
}
#else
#define gpio_system_reset() do {} while (0)
@@ -74,7 +78,6 @@ void machine_restart(char *cmd)
{
printk(KERN_NOTICE "Machine restart...\n");
gpio_system_reset();
- dump_stack();
while (1)
;
}