Re: [PATCH 4/7] mmc: at91_mci: use DMA buffer for read

From: Andrew Morton
Date: Tue Mar 02 2010 - 16:35:47 EST

On Fri, 26 Feb 2010 19:39:32 +0100
Nicolas Ferre <nicolas.ferre@xxxxxxxxx> wrote:

> + kunmap_atomic(((void *)sgbuffer)-sg->offset, KM_BIO_SRC_IRQ);

It's a feature of kunmap_atomic() that it will accept a pointer to any
location in the page. So the subtraction isn't strictly needed.

And if the subtraction is removed, the (void*) cast can also be removed.

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