linux-kernel - Re: [PATCH] prism54usb: Fix hail of warnings on 64bit platforms

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Message-ID: <45EEDD81.4080301@rtr.ca>
Date:	Wed, 07 Mar 2007 10:42:57 -0500
From:	Mark Lord <lkml@....ca>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	akpm@...l.org, linux-kernel@...r.kernel.org,
	linux-wireless@...r.kernel.org
Subject: Re: [PATCH] prism54usb: Fix hail of warnings on 64bit platforms

Alan Cox wrote:
> If you want to cast a pointer to a small value then start by turning it
> into an unsigned long so the compiler knows what is going on.
> 
> Personally I find the whole approach used by this driver for types of
> registers (which are really USB register numbers) utterly perverse...
...
>
>	err = p54u_write(priv, buf, type,\
> -				 cpu_to_le32((u32)addr), data);\
> +				 cpu_to_le32((u32)(unsigned long)addr), data);\
...

What exactly are those "addr" parameters -- memory addresses ?

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