> -----Original Message----- > From: David Miller [mailto:davem@xxxxxxxxxxxxx] > Sent: Monday, April 29, 2013 2:10 PM > To: Haiyang Zhang > Cc: netdev@xxxxxxxxxxxxxxx; KY Srinivasan; olaf@xxxxxxxxx; > jasowang@xxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > devel@xxxxxxxxxxxxxxxxxxxxxx > Subject: Re: [PATCH net-next] hyperv: Fix a compiler warning in > netvsc_send() > > From: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> > Date: Fri, 26 Apr 2013 11:25:55 -0700 > > > Fixed: warning: cast from pointer to integer of different size > > > > The Hyper-V hosts always use 64 bit request id. The guests can have 32 > > or 64 bit pointers which equal to the ulong type size. So we cast it to ulong > type. > > And, assigning 32bit integer to 64 bit variable works fine. > > > > The VMBus returns the same id in the completion packet. But the value > > has no effect on the host side. > > > > Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx> > > Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> > > Reviewed-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx> > > Applied, but: > > > - req_id = (u64)packet; > > + req_id = (ulong)packet; > > I really do not like these shorthands for fundamental C types, we generally > do not use "ulong", "uint" etc. Please expand them out explicitly to > "unsigned long", "unsigned int", etc. Thanks for applying it. Going forward, I will use the long format, like "unsigned long", instead of "ulong", etc. Thanks, - Haiyang _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
