linux-kernel - Re: [KJ] [PATCH] Correct misc_register return code handling in several drivers

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Message-ID: <20061023184443.GD23714@hmsreliant.homelinux.net>
Date:	Mon, 23 Oct 2006 14:44:43 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	Dan Carpenter <error27@...il.com>
Cc:	kernel-janitors@...ts.osdl.org, akpm@...l.org, maxk@...lcomm.com,
	benh@...nel.crashing.org, linux-kernel@...r.kernel.org,
	kjhall@...ibm.com
Subject: Re: [KJ] [PATCH] Correct misc_register return code handling in several drivers

On Mon, Oct 23, 2006 at 11:32:08AM -0700, Dan Carpenter wrote:
> On 10/23/06, Neil Horman <nhorman@...driver.com> wrote:
> >On Mon, Oct 23, 2006 at 11:01:36AM -0700, Dan Carpenter wrote:
> >> On 10/23/06, Neil Horman <nhorman@...driver.com> wrote:
> >> >+out3:
> >> >+       for_each_online_node(node) {
> >> >+               if(timers[node] != NULL)
> >> >+                       kfree(timers[node]);
> >> >+       }
> >>
> >> Tharindu is going to be unhappy out if he sees that.  There is a
> >> possibility that timers[node] is uninitialized.  if node[0] is null
> >> then node[1] is uninitialized and it's going to cause a crash.
> >>
> >> regards,
> >> dan carpenter
> >
> >
> >Theres a memset to ensure that all the timer pointers are initalized to 
> >NULL in
> >the patch:
> >
> >@@ -709,16 +710,18 @@ static int __init mmtimer_init(void)
> >        if (timers == NULL) {
> >                printk(KERN_ERR "%s: failed to allocate memory for 
> >                device\n",
> >                                MMTIMER_NAME);
> >-               return -1;
> >+               goto out2;
> >        }
> >
> >+       memset(timers,0,(sizeof(mmtimer_t *)*maxn));
> >+
> >
> >
> 
> Ah.  Great.  Sorry, didn't notice that you'd taken care of that
> already.  Looks good.
> 
No worries.  Thanks for taking the time to look
Neil

> regards,
> dan carpenter
> 
> >--
> >/***************************************************
> > *Neil Horman
> > *Software Engineer
> > *gpg keyid: 1024D / 0x92A74FA1 - http://pgp.mit.edu
> > ***************************************************/
> >
> -
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-- 
/***************************************************
 *Neil Horman
 *Software Engineer
 *gpg keyid: 1024D / 0x92A74FA1 - http://pgp.mit.edu
 ***************************************************/
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