linux-kernel - Re: [PATCH] net, wireless: Don't return uninitialized in __cfg80211_stop_sched

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Message-ID: <1309379630.1514.122.camel@cumari>
Date:	Wed, 29 Jun 2011 23:33:50 +0300
From:	Luciano Coelho <coelho@...com>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	Jesper Juhl <jj@...osbits.net>, linux-wireless@...r.kernel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	"John W. Linville" <linville@...driver.com>
Subject: Re: [PATCH] net, wireless: Don't return uninitialized in
 __cfg80211_stop_sched_scan()

On Wed, 2011-06-29 at 22:27 +0200, Johannes Berg wrote: 
> On Wed, 2011-06-29 at 22:13 +0200, Jesper Juhl wrote:
> > If the 'driver_initiated' function argument to
> > __cfg80211_stop_sched_scan() is not 0 then we'll return an
> > uninitialized 'ret' from the function.
> 
> 'err'. I also dislike the initialisation, can we just replace the
> "return err;" at the end of the function with "return 0;" instead?

Luckily we were never using the return value when passing
driver_initiate =- false.

And I agree with you, there's no use to return err at the end.  Better
to simply return 0.


> Luca, should it maybe be return -ENOENT anyway in the !sched_scan_req
> case?

We could do that.  I had just thought that stopping a scan that is not
running would just be a NOP, but if you prefer to return an error in
that case, I can do it.

-- 
Cheers,
Luca.

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