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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prev parent 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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