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x86: Add flush_write_buffers in nommu functions

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This patch adds flush_write_buffers() in some functions of pci-nommu_64.c
They are added anywhere i386 would also have it. This is not a problem
for x86_64, since flush_rite_buffers() an nop for it.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Glauber Costa 2008-04-08 13:20:46 -03:00 committed by Ingo Molnar
parent 9f9ab46d55
commit e4dcdd6b4f
1 changed files with 2 additions and 0 deletions
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arch/x86/kernel/pci-nommu_64.c
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@ -32,6 +32,7 @@ nommu_map_single(struct device *hwdev, phys_addr_t paddr, size_t size,
dma_addr_t bus = paddr;
if (!check_addr("map_single", hwdev, bus, size))
return bad_dma_address;
flush_write_buffers();
return bus;
}
@ -64,6 +65,7 @@ static int nommu_map_sg(struct device *hwdev, struct scatterlist *sg,
return 0;
s->dma_length = s->length;
}
flush_write_buffers();
return nents;
}