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| author | Christoph Hellwig <hch@lst.de> | 2018-04-27 09:31:47 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-05-28 12:48:21 +0200 |
| commit | 098afd981744061d37eb4d40bc3f755438570afb (patch) | |
| tree | e9086d4732a6c381a03406f4331a8477e2a780a7 /arch/x86/kernel/pci-dma.c | |
| parent | x86/pci-dma: remove the experimental forcesac boot option (diff) | |
| download | linux-098afd981744061d37eb4d40bc3f755438570afb.tar.xz linux-098afd981744061d37eb4d40bc3f755438570afb.zip | |
x86/pci-dma: remove the explicit nodac and allowdac option
This is something drivers should decide (modulo chipset quirks like
for VIA), which as far as I can tell is how things have been handled
for the last 15 years.
Note that we keep the usedac option for now, as it is used in the wild
to override the too generic VIA quirk.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
| -rw-r--r-- | arch/x86/kernel/pci-dma.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index b65b0d7072f1..b523414bc323 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -122,9 +122,9 @@ static __init int iommu_setup(char *p) if (!strncmp(p, "forcesac", 8)) pr_warn("forcesac option ignored.\n"); if (!strncmp(p, "allowdac", 8)) - forbid_dac = 0; + pr_warn("allowdac option ignored.\n"); if (!strncmp(p, "nodac", 5)) - forbid_dac = 1; + pr_warn("nodac option ignored.\n"); if (!strncmp(p, "usedac", 6)) { forbid_dac = -1; return 1; |