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Date: Mon, 18 Mar 2013 09:28:07 +0100 From: <oskar.andero@...ymobile.com> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org> CC: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>, Felipe Balbi <balbi@...com>, "Bengtsson, Truls" <Truls.Bengtsson@...ymobile.com>, "Lekanovic, Radovan" <Radovan.Lekanovic@...ymobile.com> Subject: Re: [RFC PATCH 1/1] usb: f_rndis: Avoid to use ERROR macro if cdev can be null On 21:16 Fri 08 Mar , Greg Kroah-Hartman wrote: > On Fri, Mar 08, 2013 at 11:56:26PM +0400, Sergei Shtylyov wrote: > > Hello. > > > > On 08-03-2013 16:53, oskar.andero@...ymobile.com wrote: > > > > >From: Truls Bengtsson <truls.bengtsson@...ymobile.com> > > > > >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@...ymobile.com> > > >Signed-off-by: Truls Bengtsson <truls.bengtsson@...ymobile.com> > > >Signed-off-by: Oskar Andero <oskar.andero@...ymobile.com> > > >--- > > > drivers/usb/gadget/f_rndis.c | 4 ++-- > > > 1 files changed, 2 insertions(+), 2 deletions(-) > > > > >diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c > > >index 71beeb8..41b5ebd 100644 > > >--- a/drivers/usb/gadget/f_rndis.c > > >+++ b/drivers/usb/gadget/f_rndis.c > > >@@ -6,6 +6,7 @@ > > > * Copyright (C) 2008 Nokia Corporation > > > * Copyright (C) 2009 Samsung Electronics > > > * Author: Michal Nazarewicz (mina86@...a86.com) > > >+ * Copyright (C) 2013 Sony Mobile Communications AB. > > > > Your change seems too insignificant to add a copyright. > > You are right, it legally is. Truls, please consult your company's > lawyers if you have questions about this, you can not assert copyright > over a file for a 2 line change, that's not allowed at all in any > jurisdiction I know of. > > Because of that, I can not accept this change, sorry. Thanks for your input guys and I totally agree with you! However, I was expecting more comments on the cover-letter, or should I take it that this solution is acceptable? -Oskar -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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