From: Jiri Slaby <jirislaby@gmail.com>
Date: Wed, 22 Oct 2008 23:47:30 +0000 (+0200)
Subject: HID: fix lock imbalance in hidraw
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0f2c5945a917e776ccd394f0e1924e9502c2795f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

HID: fix lock imbalance in hidraw

Add omitted unlock_kernel() to hidraw_ioctl().
Added in 979c407e3b89b606e810fa494ef316896eadbfad
(HID: Push down BKL into ioctl handler in hidraw).

Corresponing sparse warning:
drivers/hid/hidraw.c:267:9: warning: context imbalance in 'hidraw_ioctl': wrong count at exit
drivers/hid/hidraw.c:267:9:    context 'kernel_lock': wanted 0, got 1

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---

diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 1c23813995aa..894d52e05bf9 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -264,6 +264,7 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd,
 		default:
 			ret = -ENOTTY;
 	}
+	unlock_kernel();
 	return ret;
 }