scsi: zfcp: fix payload with full FCP_RSP IU in SCSI trace records

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / hid / hidraw.c

diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index a7451632ceb46bad87845c444fc1897973e94ef9..612a655bc9f04cf2ad4b02b4b1e9ebd98164364d 100644 (file)
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -113,7 +113,7 @@ static ssize_t hidraw_send_report(struct file *file, const char __user *buffer,
        __u8 *buf;
        int ret = 0;
 
-       if (!hidraw_table[minor]) {
+       if (!hidraw_table[minor] || !hidraw_table[minor]->exist) {
                ret = -ENODEV;
                goto out;
        }
@@ -261,7 +261,7 @@ static int hidraw_open(struct inode *inode, struct file *file)
        }
 
        mutex_lock(&minors_lock);
-       if (!hidraw_table[minor]) {
+       if (!hidraw_table[minor] || !hidraw_table[minor]->exist) {
                err = -ENODEV;
                goto out_unlock;
        }
@@ -302,39 +302,38 @@ static int hidraw_fasync(int fd, struct file *file, int on)
        return fasync_helper(fd, file, on, &list->fasync);
 }
 
+static void drop_ref(struct hidraw *hidraw, int exists_bit)
+{
+       if (exists_bit) {
+               hid_hw_close(hidraw->hid);
+               hidraw->exist = 0;
+               if (hidraw->open)
+                       wake_up_interruptible(&hidraw->wait);
+       } else {
+               --hidraw->open;
+       }
+
+       if (!hidraw->open && !hidraw->exist) {
+               device_destroy(hidraw_class, MKDEV(hidraw_major, hidraw->minor));
+               hidraw_table[hidraw->minor] = NULL;
+               kfree(hidraw);
+       }
+}
+
 static int hidraw_release(struct inode * inode, struct file * file)
 {
        unsigned int minor = iminor(inode);
-       struct hidraw *dev;
        struct hidraw_list *list = file->private_data;
-       int ret;
-       int i;
 
        mutex_lock(&minors_lock);
-       if (!hidraw_table[minor]) {
-               ret = -ENODEV;
-               goto unlock;
-       }
 
        list_del(&list->node);
-       dev = hidraw_table[minor];
-       if (!--dev->open) {
-               if (list->hidraw->exist) {
-                       hid_hw_power(dev->hid, PM_HINT_NORMAL);
-                       hid_hw_close(dev->hid);
-               } else {
-                       kfree(list->hidraw);
-               }
-       }
-
-       for (i = 0; i < HIDRAW_BUFFER_SIZE; ++i)
-               kfree(list->buffer[i].value);
        kfree(list);
-       ret = 0;
-unlock:
-       mutex_unlock(&minors_lock);
 
-       return ret;
+       drop_ref(hidraw_table[minor], 0);
+
+       mutex_unlock(&minors_lock);
+       return 0;
 }
 
 static long hidraw_ioctl(struct file *file, unsigned int cmd,
@@ -539,18 +538,9 @@ void hidraw_disconnect(struct hid_device *hid)
        struct hidraw *hidraw = hid->hidraw;
 
        mutex_lock(&minors_lock);
-       hidraw->exist = 0;
-
-       device_destroy(hidraw_class, MKDEV(hidraw_major, hidraw->minor));
 
-       hidraw_table[hidraw->minor] = NULL;
+       drop_ref(hidraw, 1);
 
-       if (hidraw->open) {
-               hid_hw_close(hid);
-               wake_up_interruptible(&hidraw->wait);
-       } else {
-               kfree(hidraw);
-       }
        mutex_unlock(&minors_lock);
 }
 EXPORT_SYMBOL_GPL(hidraw_disconnect);