[PATCH 04/28] x86: Add flush_write_buffers in nommu functions

Glauber Costa
2008-04-08T16:20:46Z

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>
---
arch/x86/kernel/pci-nommu_64.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/pci-nommu_64.c b/arch/x86/kernel/pci-nommu_64.c
index a4e8ccf..1da9cf9 100644
--- a/arch/x86/kernel/pci-nommu_64.c
+++ b/arch/x86/kernel/pci-nommu_64.c
@@ -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;
}

--
1.5.0.6