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path: root/drivers/hid/hidraw.c
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Diffstat (limited to 'drivers/hid/hidraw.c')
-rw-r--r--drivers/hid/hidraw.c32
1 files changed, 30 insertions, 2 deletions
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 7685ae6808c4..732449628971 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -208,7 +208,7 @@ static int hidraw_release(struct inode * inode, struct file * file)
list_del(&list->node);
dev = hidraw_table[minor];
- if (!dev->open--) {
+ if (!--dev->open) {
if (list->hidraw->exist)
dev->hid->ll_driver->close(dev->hid);
else
@@ -265,6 +265,34 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
break;
}
default:
+ {
+ struct hid_device *hid = dev->hid;
+ if (_IOC_TYPE(cmd) != 'H' || _IOC_DIR(cmd) != _IOC_READ)
+ return -EINVAL;
+
+ if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWNAME(0))) {
+ int len;
+ if (!hid->name)
+ return 0;
+ len = strlen(hid->name) + 1;
+ if (len > _IOC_SIZE(cmd))
+ len = _IOC_SIZE(cmd);
+ return copy_to_user(user_arg, hid->name, len) ?
+ -EFAULT : len;
+ }
+
+ if (_IOC_NR(cmd) == _IOC_NR(HIDIOCGRAWPHYS(0))) {
+ int len;
+ if (!hid->phys)
+ return 0;
+ len = strlen(hid->phys) + 1;
+ if (len > _IOC_SIZE(cmd))
+ len = _IOC_SIZE(cmd);
+ return copy_to_user(user_arg, hid->phys, len) ?
+ -EFAULT : len;
+ }
+ }
+
ret = -ENOTTY;
}
unlock_kernel();
@@ -329,7 +357,7 @@ int hidraw_connect(struct hid_device *hid)
goto out;
}
- dev->dev = device_create(hidraw_class, NULL, MKDEV(hidraw_major, minor),
+ dev->dev = device_create(hidraw_class, &hid->dev, MKDEV(hidraw_major, minor),
NULL, "%s%d", "hidraw", minor);
if (IS_ERR(dev->dev)) {