Hi Andrew,
Am Dienstag, 2. März 2010 schrieb Andrew Morton:
> Nicolas Ferre 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 n
On Fri, 26 Feb 2010 19:39:32 +0100
Nicolas Ferre 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
From: Wolfgang Muees
This patch converts the read to use the DMA buffer as well. The old
code was doing double-buffering DMA with the PDC; no way to make it
work. Replace it with a single-PDC approach.
It also simplify things removing the need for a pre_dma_read() function.
Signed-off-by: Wolfga
