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-rw-r--r--fs/sysfs/bin.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c
index 66f6e58a7e4..f2c478c3424 100644
--- a/fs/sysfs/bin.c
+++ b/fs/sysfs/bin.c
@@ -63,6 +63,9 @@ read(struct file *file, char __user *userbuf, size_t bytes, loff_t *off)
int count = min_t(size_t, bytes, PAGE_SIZE);
char *temp;
+ if (!bytes)
+ return 0;
+
if (size) {
if (offs > size)
return 0;
@@ -131,6 +134,9 @@ static ssize_t write(struct file *file, const char __user *userbuf,
int count = min_t(size_t, bytes, PAGE_SIZE);
char *temp;
+ if (!bytes)
+ return 0;
+
if (size) {
if (offs > size)
return 0;