linux-kernel - [PATCH] pvrusb2: correctly handling failed thread run

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Message-Id: <1454627363-24300-1-git-send-email-wuninsu@gmail.com>
Date:	Thu,  4 Feb 2016 18:09:23 -0500
From:	Insu Yun <wuninsu@...il.com>
To:	isely@...ox.com, mchehab@....samsung.com,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	taesoo@...ech.edu, yeongjin.jang@...ech.edu, insu@...ech.edu,
	changwoo@...ech.edu, Insu Yun <wuninsu@...il.com>
Subject: [PATCH] pvrusb2: correctly handling failed thread run

Since kthread_run returns -ENOMEM if failed,
it needs to be checked whether it is error, not whether it is null.

Signed-off-by: Insu Yun <wuninsu@...il.com>
---
 drivers/media/usb/pvrusb2/pvrusb2-context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/usb/pvrusb2/pvrusb2-context.c b/drivers/media/usb/pvrusb2/pvrusb2-context.c
index fd888a6..aabdc58 100644
--- a/drivers/media/usb/pvrusb2/pvrusb2-context.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-context.c
@@ -196,7 +196,7 @@ int pvr2_context_global_init(void)
 	pvr2_context_thread_ptr = kthread_run(pvr2_context_thread_func,
 					      NULL,
 					      "pvrusb2-context");
-	return (pvr2_context_thread_ptr ? 0 : -ENOMEM);
+	return IS_ERR(pvr2_context_thread_ptr) ? -ENOMEM : 0;
 }
 
 
-- 
1.9.1