linux-kernel - Re: [PATCH net] hyperv: Fix a compiler warning in netvsc

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Message-Id: <20130416.151141.1928940532005718606.davem@davemloft.net>
Date:	Tue, 16 Apr 2013 15:11:41 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	haiyangz@...rosoft.com
Cc:	netdev@...r.kernel.org, kys@...rosoft.com, olaf@...fle.de,
	jasowang@...hat.com, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org
Subject: Re: [PATCH net] hyperv: Fix a compiler warning in netvsc_send()

From: Haiyang Zhang <haiyangz@...rosoft.com>
Date: Tue, 16 Apr 2013 12:03:51 -0700

> Fixed: warning: cast from pointer to integer of different size
> 
> Reported-by: kbuild test robot <fengguang.wu@...el.com>
> Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
> Reviewed-by: K. Y. Srinivasan <kys@...rosoft.com>

If you're coding pointers into request IDs you better make that
explicit and add lots of comments explaining why that's OK and
why it's going to work fine in these circumstances.

I'm not applying this patch, it just makes a bad situation even
worse.  Either your request IDs are 64-bit or they are not, it
can't be both.
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