linux-kernel - [PATCH 15/38] mips: txx9: 7segled: add missing put

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Date:	Thu, 19 Dec 2013 16:03:26 +0100
From:	Levente Kurusa <levex@...ux.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Levente Kurusa <levex@...ux.com>,
	Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org
Subject: [PATCH 15/38] 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.

Signed-off-by: Levente Kurusa <levex@...ux.com>
---
 arch/mips/txx9/generic/7segled.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/arch/mips/txx9/generic/7segled.c b/arch/mips/txx9/generic/7segled.c
index 4642f56..3caa548 100644
--- a/arch/mips/txx9/generic/7segled.c
+++ b/arch/mips/txx9/generic/7segled.c
@@ -83,6 +83,10 @@ static struct bus_type tx_7segled_subsys = {
 	.dev_name	= "7segled",
 };
 
+void tx_7segled_release(struct device *dev) {
+	kfree(dev);
+}
+
 static int __init tx_7segled_init_sysfs(void)
 {
 	int error, i;
@@ -103,11 +107,14 @@ 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;
 }
-- 
1.8.3.1

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