HID: hidraw_connect() memleak fix

It looks like hidraw_connect() is leaking memory in case of failure.
Also it should return -ENOMEM when kzalloc fails.

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 10 insertions, 4 deletions

diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 20ebba1032b8..8503197a8131 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -282,7 +282,7 @@ EXPORT_SYMBOL_GPL(hidraw_report_event);
 
 int hidraw_connect(struct hid_device *hid)
 {
-        int minor, result = -EINVAL;
+        int minor, result;
         struct hidraw *dev;
 
         /* TODO currently we accept any HID device. This should later
@@ -290,8 +290,11 @@ int hidraw_connect(struct hid_device *hid)
          * non-input applications
          */
 
-        if (!(dev = kzalloc(sizeof(struct hidraw), GFP_KERNEL)))
-                return -1;
+        dev = kzalloc(sizeof(struct hidraw), GFP_KERNEL);
+        if (!dev)
+                return -ENOMEM;
+
+        result = -EINVAL;
 
         spin_lock(&minors_lock);
 
@@ -305,8 +308,10 @@ int hidraw_connect(struct hid_device *hid)
 
         spin_unlock(&minors_lock);
 
-        if (result)
+        if (result) {
+                kfree(dev);
                 goto out;
+        }
 
         dev->dev = device_create(hidraw_class, NULL, MKDEV(hidraw_major, minor),
                                 "%s%d", "hidraw", minor);
@@ -316,6 +321,7 @@ int hidraw_connect(struct hid_device *hid)
                 hidraw_table[minor] = NULL;
                 spin_unlock(&minors_lock);
                 result = PTR_ERR(dev->dev);
+                kfree(dev);
                 goto out;
         }