Re: [PATCH net-next] hyperv: Fix a compiler warning innetvsc_send()
From: David Miller
Date: Mon Apr 29 2013 - 14:09:53 EST
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>
> - 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.
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