diff options
| author | Andi Kleen <ak@suse.de> | 2006-05-15 18:19:38 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-05-16 07:59:31 -0700 |
| commit | f0fdabf8bf187c9aafeb139a828c530ef45cf022 (patch) | |
| tree | d445ab6a41a30633e335938164698bfc6152a8ad /arch | |
| parent | 639b421b911bbde1e3fb5ed037a4f8c85a5bffcb (diff) | |
| download | linux-f0fdabf8bf187c9aafeb139a828c530ef45cf022.tar.gz | |
[PATCH] x86_64: Don't warn for overflow in nommu case when dma_mask is < 32bit
This triggers for b44's 1GB DMA workaround which tries to map
first and then bounces.
The 32bit heuristic is reasonable because the IOMMU doesn't attempt
to handle < 32bit masks anyways.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86_64/kernel/pci-nommu.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86_64/kernel/pci-nommu.c b/arch/x86_64/kernel/pci-nommu.c index 44adcc2d5e5b..1f6ecc62061d 100644 --- a/arch/x86_64/kernel/pci-nommu.c +++ b/arch/x86_64/kernel/pci-nommu.c @@ -12,9 +12,10 @@ static int check_addr(char *name, struct device *hwdev, dma_addr_t bus, size_t size) { if (hwdev && bus + size > *hwdev->dma_mask) { - printk(KERN_ERR - "nommu_%s: overflow %Lx+%lu of device mask %Lx\n", - name, (long long)bus, size, (long long)*hwdev->dma_mask); + if (*hwdev->dma_mask >= 0xffffffffULL) + printk(KERN_ERR + "nommu_%s: overflow %Lx+%lu of device mask %Lx\n", + name, (long long)bus, size, (long long)*hwdev->dma_mask); return 0; } return 1; |