HID: hidraw: open count should not increase if error

In hidraw_open, if hid_hw_power returns with error, hidraw device open count
should not increase.

Signed-off-by: Amit Nagal <helloin.amit@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index a8c2b7b6220a..6d65d4e35120 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -272,8 +272,10 @@ static int hidraw_open(struct inode *inode, struct file *file)
         dev = hidraw_table[minor];
         if (!dev->open++) {
                 err = hid_hw_power(dev->hid, PM_HINT_FULLON);
-                if (err < 0)
+                if (err < 0) {
+                        dev->open--;
                         goto out_unlock;
+                }
 
                 err = hid_hw_open(dev->hid);
                 if (err < 0) {