On Fri, 2012-10-26 at 11:15 -0600, Shuah Khan wrote:
> On Fri, 2012-10-26 at 10:48 -0600, Shuah Khan wrote:
> > Add support for debug_dma_mapping_error() call to avoid warning from
> > debug_dma_unmap() interface when it checks for mapping error checked
> > status. Without this patch, device driver failed to check map error
> > warning is generated.
> >
> > Signed-off-by: Shuah Khan <shuah.k...@hp.com>
>
> Please ignore this patch if frv doesn't use dma_map_page() and
> dma_map_single() from arch/mips/include/asm/dma-mapping.
>
> frv defines dma_map_page() and dma_map_single() in
> arch/frv/mb93090-mb00/pci-dma.c and
> arch/frv/mb93090-mb00/pci-dma-nommu.c
>
> -- Shuah
> > ---
> > arch/frv/include/asm/dma-mapping.h | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/arch/frv/include/asm/dma-mapping.h
> > b/arch/frv/include/asm/dma-mapping.h
> > index dfb8110..d8a8aac 100644
> > --- a/arch/frv/include/asm/dma-mapping.h
> > +++ b/arch/frv/include/asm/dma-mapping.h
> > @@ -6,6 +6,7 @@
> > #include <asm/cacheflush.h>
> > #include <asm/scatterlist.h>
> > #include <asm/io.h>
> > +#include <linux/dma-debug.h>
> >
> > /*
> > * See Documentation/DMA-API.txt for the description of how the
> > @@ -97,6 +98,7 @@ void dma_sync_sg_for_device(struct device *dev, struct
> > scatterlist *sg, int nele
> > static inline
> > int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
> > {
> > + debug_dma_mapping_error(dev, dma_addr);
> > return 0;
> > }
> >
>
Marek,
This one is for frv to go through your tree with the other arch patches
for debug_dmap_mapping_error(). However, I am not very sure if this
change is necessary for frv if it doesn't use generic dma interfaces. I
will defer to you and David on deciding if this patch is needed.
frv defines dma_map_page() and dma_map_single() in
arch/frv/mb93090-mb00/pci-dma.c and
arch/frv/mb93090-mb00/pci-dma-nommu.c
Thanks,
-- Shuah
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