From: Levente Kurusa <levex@linux.com>
Date: Thu, 19 Dec 2013 15:03:26 +0000 (+0100)
Subject: MIPS: TXx9: 7segled: add missing put_device call
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=f0a7a2d042807d08e5bcfd3194e74b16810c4def;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git

MIPS: TXx9: 7segled: add missing put_device call

This is required so that we give up the last reference to the device.

Also, add a new tx_7segled_release function which will be called after the
put_device to ensure that device is kfree'd.

[ralf@linux-mips.org: Reformat to Linux coding style and make
tx_7segled_release static.]

Signed-off-by: Levente Kurusa <levex@linux.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6260/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/txx9/generic/7segled.c b/arch/mips/txx9/generic/7segled.c
index 4642f56e70e5..566c58bd44d0 100644
--- a/arch/mips/txx9/generic/7segled.c
+++ b/arch/mips/txx9/generic/7segled.c
@@ -83,6 +83,11 @@ static struct bus_type tx_7segled_subsys = {
 	.dev_name	= "7segled",
 };
 
+static void tx_7segled_release(struct device *dev)
+{
+	kfree(dev);
+}
+
 static int __init tx_7segled_init_sysfs(void)
 {
 	int error, i;
@@ -103,11 +108,14 @@ static int __init tx_7segled_init_sysfs(void)
 		}
 		dev->id = i;
 		dev->bus = &tx_7segled_subsys;
+		dev->release = &tx_7segled_release;
 		error = device_register(dev);
-		if (!error) {
-			device_create_file(dev, &dev_attr_ascii);
-			device_create_file(dev, &dev_attr_raw);
+		if (error) {
+			put_device(dev);
+			return error;
 		}
+		device_create_file(dev, &dev_attr_ascii);
+		device_create_file(dev, &dev_attr_raw);
 	}
 	return error;
 }