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-rw-r--r--drivers/platform/x86/intel_pmc_core.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c
index d174aeb492e0..b0e486a6bdfb 100644
--- a/drivers/platform/x86/intel_pmc_core.c
+++ b/drivers/platform/x86/intel_pmc_core.c
@@ -1360,17 +1360,13 @@ static ssize_t pmc_core_lpm_latch_mode_write(struct file *file,
struct pmc_dev *pmcdev = s->private;
bool clear = false, c10 = false;
unsigned char buf[8];
- ssize_t ret;
int idx, m, mode;
u32 reg;
if (count > sizeof(buf) - 1)
return -EINVAL;
-
- ret = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, userbuf, count);
- if (ret < 0)
- return ret;
-
+ if (copy_from_user(buf, userbuf, count))
+ return -EFAULT;
buf[count] = '\0';
/*