diff options
| author | David S. Miller <davem@davemloft.net> | 2010-01-22 22:45:46 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-01-22 22:45:46 -0800 |
| commit | 6be325719b3e54624397e413efd4b33a997e55a3 (patch) | |
| tree | 57f321a56794cab2222e179b16731e0d76a4a68a /arch/microblaze/kernel/heartbeat.c | |
| parent | 26d92f9276a56d55511a427fb70bd70886af647a (diff) | |
| parent | 92dcffb916d309aa01778bf8963a6932e4014d07 (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'arch/microblaze/kernel/heartbeat.c')
| -rw-r--r-- | arch/microblaze/kernel/heartbeat.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/microblaze/kernel/heartbeat.c b/arch/microblaze/kernel/heartbeat.c index 1bdf20222b9..522751737cf 100644 --- a/arch/microblaze/kernel/heartbeat.c +++ b/arch/microblaze/kernel/heartbeat.c @@ -45,6 +45,7 @@ void heartbeat(void) void setup_heartbeat(void) { struct device_node *gpio = NULL; + int *prop; int j; char *gpio_list[] = { "xlnx,xps-gpio-1.00.a", @@ -58,10 +59,14 @@ void setup_heartbeat(void) break; } - base_addr = *(int *) of_get_property(gpio, "reg", NULL); - base_addr = (unsigned long) ioremap(base_addr, PAGE_SIZE); - printk(KERN_NOTICE "Heartbeat GPIO at 0x%x\n", base_addr); + if (gpio) { + base_addr = *(int *) of_get_property(gpio, "reg", NULL); + base_addr = (unsigned long) ioremap(base_addr, PAGE_SIZE); + printk(KERN_NOTICE "Heartbeat GPIO at 0x%x\n", base_addr); - if (*(int *) of_get_property(gpio, "xlnx,is-bidir", NULL)) - out_be32(base_addr + 4, 0); /* GPIO is configured as output */ + /* GPIO is configured as output */ + prop = (int *) of_get_property(gpio, "xlnx,is-bidir", NULL); + if (prop) + out_be32(base_addr + 4, 0); + } } |