[POWERPC] Sky Cpu and Nexus: check for platform_get_resource retcode
Add adds checking for platform_get_resource() return code to prevent
possible NULL pointer usage.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Brian Waite <waite@skycomputers.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/drivers/misc/hdpuftrs/hdpu_cpustate.c b/drivers/misc/hdpuftrs/hdpu_cpustate.c
index b5c6f21..b16742c 100644
--- a/drivers/misc/hdpuftrs/hdpu_cpustate.c
+++ b/drivers/misc/hdpuftrs/hdpu_cpustate.c
@@ -194,6 +194,11 @@
int ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ printk(KERN_ERR "sky_cpustate: "
+ "Invalid memory resource.\n");
+ return -EINVAL;
+ }
cpustate.set_addr = (unsigned long *)res->start;
cpustate.clr_addr = (unsigned long *)res->end - 1;
diff --git a/drivers/misc/hdpuftrs/hdpu_nexus.c b/drivers/misc/hdpuftrs/hdpu_nexus.c
index fda9998..01bc917 100644
--- a/drivers/misc/hdpuftrs/hdpu_nexus.c
+++ b/drivers/misc/hdpuftrs/hdpu_nexus.c
@@ -62,6 +62,11 @@
int *nexus_id_addr;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ printk(KERN_ERR "sky_nexus: "
+ "Invalid memory resource.\n");
+ return -EINVAL;
+ }
nexus_id_addr = ioremap(res->start,
(unsigned long)(res->end - res->start));
if (nexus_id_addr) {
@@ -69,7 +74,7 @@
chassis_id = *nexus_id_addr & 0xff;
iounmap(nexus_id_addr);
} else {
- printk(KERN_ERR "Could not map slot id\n");
+ printk(KERN_ERR "sky_nexus: Could not map slot id\n");
}
hdpu_slot_id = create_proc_entry("sky_slot_id", 0666, &proc_root);