diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pipe_crc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pipe_crc.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/intel_pipe_crc.c b/drivers/gpu/drm/i915/intel_pipe_crc.c index 647426c75b0a..8fbd2bd0877f 100644 --- a/drivers/gpu/drm/i915/intel_pipe_crc.c +++ b/drivers/gpu/drm/i915/intel_pipe_crc.c @@ -853,19 +853,12 @@ static ssize_t display_crc_ctl_write(struct file *file, const char __user *ubuf, return -E2BIG; } - tmpbuf = kmalloc(len + 1, GFP_KERNEL); - if (!tmpbuf) - return -ENOMEM; - - if (copy_from_user(tmpbuf, ubuf, len)) { - ret = -EFAULT; - goto out; - } - tmpbuf[len] = '\0'; + tmpbuf = memdup_user_nul(ubuf, len); + if (IS_ERR(tmpbuf)) + return PTR_ERR(tmpbuf); ret = display_crc_ctl_parse(dev_priv, tmpbuf, len); -out: kfree(tmpbuf); if (ret < 0) return ret; |