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-rw-r--r--arch/powerpc/kernel/fadump.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c
index e1431800bfb9..04ea5c04fd24 100644
--- a/arch/powerpc/kernel/fadump.c
+++ b/arch/powerpc/kernel/fadump.c
@@ -1270,10 +1270,15 @@ static ssize_t fadump_release_memory_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
+ int input = -1;
+
if (!fw_dump.dump_active)
return -EPERM;
- if (buf[0] == '1') {
+ if (kstrtoint(buf, 0, &input))
+ return -EINVAL;
+
+ if (input == 1) {
/*
* Take away the '/proc/vmcore'. We are releasing the dump
* memory, hence it will not be valid anymore.
@@ -1307,21 +1312,25 @@ static ssize_t fadump_register_store(struct kobject *kobj,
const char *buf, size_t count)
{
int ret = 0;
+ int input = -1;
if (!fw_dump.fadump_enabled || fdm_active)
return -EPERM;
+ if (kstrtoint(buf, 0, &input))
+ return -EINVAL;
+
mutex_lock(&fadump_mutex);
- switch (buf[0]) {
- case '0':
+ switch (input) {
+ case 0:
if (fw_dump.dump_registered == 0) {
goto unlock_out;
}
/* Un-register Firmware-assisted dump */
fadump_unregister_dump(&fdm);
break;
- case '1':
+ case 1:
if (fw_dump.dump_registered == 1) {
ret = -EEXIST;
goto unlock_out;