diff options
| author | Tejun Heo <tj@kernel.org> | 2009-10-26 15:41:46 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-18 13:43:42 -0800 |
| commit | 671ca70a2f70399b42e632211f4c9c0c553506e9 (patch) | |
| tree | 85d2ec7c82f243fc7cf1f45ee4766032cf1251b1 | |
| parent | 03146ec8b52708f80f1bb5f90d27f090c60541ab (diff) | |
x86: Fix iommu=nodac parameter handling
commit 2ae8bb75db1f3de422eb5898f2a063c46c36dba8 upstream.
iommu=nodac should forbid dac instead of enabling it. Fix it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Matteo Frigo <athena@fftw.org>
LKML-Reference: <4AE5B52A.4050408@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/x86/kernel/pci-dma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 1a041bcf506b..953667c7487f 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -203,7 +203,7 @@ static __init int iommu_setup(char *p) if (!strncmp(p, "allowdac", 8)) forbid_dac = 0; if (!strncmp(p, "nodac", 5)) - forbid_dac = -1; + forbid_dac = 1; if (!strncmp(p, "usedac", 6)) { forbid_dac = -1; return 1; |