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Subjectiommu: it could use some documentation

Fix coding style in pci-dma_64.c and add stubs for documentation. I
hope someone fills the rest, I understand maybe off and soft...

Signed-off-by: Pavel Machek <pavel@suse.cz>

---
commit 3ab83390752b5e71c6f04230dcd25c7789bb5099
tree 295a3567278a216785cd4e32dc3bcae2c5aad572
parent d5ac3c822e1036165b92d62e464be1e61c12d757
author Pavel <pavel@amd.ucw.cz> Wed, 19 Mar 2008 15:57:03 +0100
committer Pavel <pavel@amd.ucw.cz> Wed, 19 Mar 2008 15:57:03 +0100

Documentation/kernel-parameters.txt | 13 +++++++++++++
arch/x86/kernel/pci-dma_64.c | 20 ++++++++++----------
2 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 467034c..d803f70 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -811,6 +811,19 @@ and is between 256 and 4096 characters.

inttest= [IA64]

+ iommu= [x86]
+ off
+ force
+ noforce
+ biomerge
+ panic
+ nopanic
+ merge
+ nomerge
+ forcesac
+ soft
+
+
intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option
off
Disable intel iommu driver.
diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c
index a82473d..a9d3f54 100644
--- a/arch/x86/kernel/pci-dma_64.c
+++ b/arch/x86/kernel/pci-dma_64.c
@@ -237,32 +237,32 @@ static __init int iommu_setup(char *p)
return -EINVAL;

while (*p) {
- if (!strncmp(p,"off",3))
+ if (!strncmp(p, "off", 3))
no_iommu = 1;
/* gart_parse_options has more force support */
- if (!strncmp(p,"force",5))
+ if (!strncmp(p, "force", 5))
force_iommu = 1;
- if (!strncmp(p,"noforce",7)) {
+ if (!strncmp(p, "noforce", 7)) {
iommu_merge = 0;
force_iommu = 0;
}

- if (!strncmp(p, "biomerge",8)) {
+ if (!strncmp(p, "biomerge", 8)) {
iommu_bio_merge = 4096;
iommu_merge = 1;
force_iommu = 1;
}
- if (!strncmp(p, "panic",5))
+ if (!strncmp(p, "panic", 5))
panic_on_overflow = 1;
- if (!strncmp(p, "nopanic",7))
+ if (!strncmp(p, "nopanic", 7))
panic_on_overflow = 0;
- if (!strncmp(p, "merge",5)) {
+ if (!strncmp(p, "merge", 5)) {
iommu_merge = 1;
force_iommu = 1;
}
- if (!strncmp(p, "nomerge",7))
+ if (!strncmp(p, "nomerge", 7))
iommu_merge = 0;
- if (!strncmp(p, "forcesac",8))
+ if (!strncmp(p, "forcesac", 8))
iommu_sac_force = 1;
if (!strncmp(p, "allowdac", 8))
forbid_dac = 0;
@@ -270,7 +270,7 @@ static __init int iommu_setup(char *p)
forbid_dac = -1;

#ifdef CONFIG_SWIOTLB
- if (!strncmp(p, "soft",4))
+ if (!strncmp(p, "soft", 4))
swiotlb = 1;
#endif

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
pomozte zachranit klanovicky les: http://www.ujezdskystrom.info/


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