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authorCyrill Gorcunov <gorcunov@gmail.com>2007-10-03 00:30:06 +0400
committerPaul Mackerras <paulus@samba.org>2007-10-03 06:02:44 +0400
commit7472fd36a87e84c2819066543224285a6ab79ffc (patch)
treec3dc2d5f7e00c65a50f47f7e971bf2dffa28557e /drivers/misc
parentd2ceb47a7cbcc50b45832c6b24c47515838d169a (diff)
downloadlinux-7472fd36a87e84c2819066543224285a6ab79ffc.tar.xz
[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>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/hdpuftrs/hdpu_cpustate.c5
-rw-r--r--drivers/misc/hdpuftrs/hdpu_nexus.c7
2 files changed, 11 insertions, 1 deletions
diff --git a/drivers/misc/hdpuftrs/hdpu_cpustate.c b/drivers/misc/hdpuftrs/hdpu_cpustate.c
index b5c6f21dcb69..b16742c7c69d 100644
--- a/drivers/misc/hdpuftrs/hdpu_cpustate.c
+++ b/drivers/misc/hdpuftrs/hdpu_cpustate.c
@@ -194,6 +194,11 @@ static int hdpu_cpustate_probe(struct platform_device *pdev)
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 fda9998f45ca..01bc9179603b 100644
--- a/drivers/misc/hdpuftrs/hdpu_nexus.c
+++ b/drivers/misc/hdpuftrs/hdpu_nexus.c
@@ -62,6 +62,11 @@ static int hdpu_nexus_probe(struct platform_device *pdev)
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 @@ static int hdpu_nexus_probe(struct platform_device *pdev)
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);