linux-kernel - RE: [PATCH]: hpilo: fix pointer warning in ilo_ccb

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Date:	Tue, 25 May 2010 22:16:10 +0000
From:	"Altobelli, David" <david.altobelli@...com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Prarit Bhargava <prarit@...hat.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"stable@...nel.org" <stable@...nel.org>,
	"tony.camuso@...hat.com" <tony.camuso@...hat.com>
Subject: RE: [PATCH]: hpilo: fix pointer warning in ilo_ccb_setup

> Seems very wrong - writes to *dmp_pa will now scribble over 
> the `struct ccb_data'.

Yeah.  The dma_pa variable is used to track the physical 
address of the DMA memory, and it is written to the device.  
We don't want a kernel pointer, we want the actual physical addr,
plus the various offsets.

> Probably local variable dma_pa should have type dma_addr_t.

I feel like I tried that, and I had trouble setting or using
the send_fifobar/recv_fifobar variables.  But I probably
didn't try too hard.
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