diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/mem.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/char/mem.c b/drivers/char/mem.c index fba76fb55ab..f0a90590cb1 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -581,14 +581,12 @@ static ssize_t write_kmem(struct file * file, const char __user * buf, if (len > PAGE_SIZE) len = PAGE_SIZE; - if (len) { - written = copy_from_user(kbuf, buf, len); - if (written) { - if (wrote + virtr) - break; - free_page((unsigned long)kbuf); - return -EFAULT; - } + written = copy_from_user(kbuf, buf, len); + if (written) { + if (wrote + virtr) + break; + free_page((unsigned long)kbuf); + return -EFAULT; } len = vwrite(kbuf, (char *)p, len); count -= len; |