linux-kernel - Re: Linux 2.6.32.30

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Message-ID: <20110302222935.GA21539@opus.istwok.net>
Date:	Wed, 2 Mar 2011 16:29:35 -0600
From:	David Engel <david@...wok.net>
To:	Greg KH <gregkh@...e.de>
Cc:	Stefan Bader <stefan.bader@...onical.com>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	torvalds@...ux-foundation.org, stable@...nel.org, lwn@....net
Subject: Re: Linux 2.6.32.30

On Wed, Mar 02, 2011 at 03:42:02PM -0500, Greg KH wrote:
> On Wed, Mar 02, 2011 at 05:50:16PM +0100, Stefan Bader wrote:
> > > FUJITA Tomonori (1):
> > >       swiotlb: fix wrong panic
> > >
> > 
> > This one breaks compilation of 64bit for me as swiotlb_tbl_unmap_single() does
> > not exist. It does not look like it is a simple single patch that would get it
> > back to 2.6.32.
> 
> I don't understand.  Is this patch somehow broken?  Is there an
> additional patch I need to apply to fix the build issue?  I need more
> information here.

I think this will fix it.

Fix compilation error introduced in 484d82b6.

do_unmap_single() was renamed to swiotlb_tbl_unmap_single() in
bfc5501f.  Use the old name unless/until that change is also
backported.

Signed-off-by: David Engel <david@...wok.net>

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 7740ee8..0d0df11 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -632,7 +632,7 @@ dma_addr_t swiotlb_map_page(struct device *dev, struct page *page,
 	 * Ensure that the address returned is DMA'ble
 	 */
 	if (!dma_capable(dev, dev_addr, size)) {
-		swiotlb_tbl_unmap_single(dev, map, size, dir);
+		do_unmap_single(dev, map, size, dir);
 		dev_addr = swiotlb_virt_to_bus(dev, io_tlb_overflow_buffer);
 	}
 
David
-- 
David Engel
david@...wok.net
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