linux-kernel - [PATCH -next] staging: cptm1217: don't call input_free_device() after input_unregister

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Message-ID: <CAPgLHd-97vfDLNXgKM0OYZAo4cyxwqLoDqWqnMhZTWSZ5-Xq7Q@mail.gmail.com>
Date:	Wed, 24 Apr 2013 10:40:00 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	gregkh@...uxfoundation.org, lars@...afoo.de,
	dan.carpenter@...cle.com, devendra.aaru@...il.com,
	adnan.ali@...ethink.co.uk
Cc:	yongjun_wei@...ndmicro.com.cn, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH -next] staging: cptm1217: don't call input_free_device() after input_unregister_device()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

input_free_device() should only be used if input_register_device()
was not called yet or if it failed. Once device was unregistered
use input_unregister_device() and memory will be freed once last
reference to the device is dropped.

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/staging/cptm1217/clearpad_tm1217.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/staging/cptm1217/clearpad_tm1217.c b/drivers/staging/cptm1217/clearpad_tm1217.c
index e96eee3..42a5f5c 100644
--- a/drivers/staging/cptm1217/clearpad_tm1217.c
+++ b/drivers/staging/cptm1217/clearpad_tm1217.c
@@ -547,10 +547,8 @@ fail_gpio:
 fail:
 	/* Clean up before returning failure */
 	for (i = 0; i < TOUCH_SUPPORTED; i++) {
-		if (ts->cp_input_info[i].input) {
+		if (ts->cp_input_info[i].input)
 			input_unregister_device(ts->cp_input_info[i].input);
-			input_free_device(ts->cp_input_info[i].input);
-		}
 	}
 	kfree(ts);
 	return retval;

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