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From: Felipe Balbi <balbi@ti.com>
To: Michal Nazarewicz <mina86@mina86.com>
Cc: <oskar.andero@sonymobile.com>, <linux-kernel@vger.kernel.org>,
	<linux-usb@vger.kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Felipe Balbi <balbi@ti.com>, <Radovan.Lekanovic@sonymobile.com>,
	Truls Bengtsson <truls.bengtsson@sonymobile.com>
Subject: Re: [RFC PATCHv2 1/1] usb: f_rndis: Avoid to use ERROR macro if cdev can be null
Date: Wed, 20 Mar 2013 14:51:25 +0200	[thread overview]
Message-ID: <20130320125125.GP29659@arwen.pp.htv.fi> (raw)
In-Reply-To: <xa1t7gl3a5hr.fsf@mina86.com>

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On Tue, Mar 19, 2013 at 02:22:56PM +0100, Michal Nazarewicz wrote:
> On Tue, Mar 19 2013, oskar.andero@sonymobile.com wrote:
> > The udc_irq service runs the isr_tr_complete_handler which in turn
> > "nukes" the endpoints, including a call to rndis_response_complete,
> > if appropriate. If the rndis_msg_parser fails here, an error will
> > be printed using a dev_err call (through the ERROR() macro).
> >
> > However, if the usb cable was just disconnected the device (cdev)
> > might not be available and will be null. Since the dev_err macro will
> > dereference the cdev pointer we get a null pointer exception.
> >
> > Reviewed-by: Radovan Lekanovic <radovan.lekanovic@sonymobile.com>
> > Signed-off-by: Truls Bengtsson <truls.bengtsson@sonymobile.com>
> > Signed-off-by: Oskar Andero <oskar.andero@sonymobile.com>
> 
> Acked-by: Michal Nazarewicz <mina86@mina86.com>
> 
> I think this is the best solution.  Adding if statements around it would
> just add noise.

alright, please re-send without RFC tag and with Michal's acked-by so I
can apply.

-- 
balbi

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      reply	other threads:[~2013-03-20 12:51 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-19 11:11 [RFC PATCHv2 0/1] usb: f_rndis: Avoid to use ERROR macro if cdev can be null oskar.andero
2013-03-19 11:11 ` [RFC PATCHv2 1/1] " oskar.andero
2013-03-19 13:22   ` Michal Nazarewicz
2013-03-20 12:51     ` Felipe Balbi [this message]

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