linux-kernel - linux-4.2-rc6/drivers/extcon/extcon.c: 3 * bad tests ?

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Date:	Sun, 9 Aug 2015 21:30:24 +0000
From:	David Binderman <dcb314@...mail.com>
To:	"myungjoo.ham@...sung.com" <myungjoo.ham@...sung.com>,
	"cw00.choi@...sung.com" <cw00.choi@...sung.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: linux-4.2-rc6/drivers/extcon/extcon.c: 3 * bad tests ?

Hello there,

1.

[linux-4.2-rc6/drivers/extcon/extcon.c:153]: (style) Checking if unsigned variable 'id' is less than zero.

Source code is

    id = find_cable_id_by_name(edev, name);
    if (id < 0)

but

   unsigned int id;

Suggest sanity check return value from find_cable_id_by_name
*before* assigning it into an unsigned variable.

2.

[linux-4.2-rc6/drivers/extcon/extcon.c:384]: (style) Checking if unsigned variable 'id' is less than zero.

Duplicate.

3.

[linux-4.2-rc6/drivers/extcon/extcon.c:432]: (style) Checking if unsigned variable 'id' is less than zero.

Another duplicate.

Regards

David Binderman
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