linux-kernel - Re: [PATCH] usb: typec: wcove: fix uninitialized usbc_irq1 and usbc

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Date:   Wed, 11 Oct 2017 13:17:19 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Colin King <colin.king@...onical.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: typec: wcove: fix uninitialized usbc_irq1 and
 usbc_irq2

On Wed, Oct 11, 2017 at 10:09:57AM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Calls to regmap_read may fail with an -EINVAL return without setting
> usbc_irq1 and usbc_irq2.  The error handling clean up expects these
> to have been set (or zero on a failure) and currently may try to
> clear the wrong IRQs if the uninitalized garbage values in usbc_irq1
> or usbc_irq2 are non-zero.  The simplest fix is to ensure these
> variables are initialized to zero.
> 
> Detected by CoverityScan, CID#1457737 ("Uninitialized scalar variable")
> 
> Fixes: 3c4fb9f16921 ("usb: typec: wcove: start using tcpm for USB PD support")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>


Thanks,

-- 
heikki