diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/sysfs/bin.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c index 006fc64227dd..aa244842f30b 100644 --- a/fs/sysfs/bin.c +++ b/fs/sysfs/bin.c @@ -62,6 +62,9 @@ read(struct file *file, char __user *userbuf, size_t bytes, loff_t *off) loff_t offs = *off; int count = min_t(size_t, bytes, PAGE_SIZE); + if (!bytes) + return 0; + if (size) { if (offs > size) return 0; @@ -119,6 +122,9 @@ static ssize_t write(struct file *file, const char __user *userbuf, loff_t offs = *off; int count = min_t(size_t, bytes, PAGE_SIZE); + if (!bytes) + return 0; + if (size) { if (offs > size) return 0; |