[PATCH] x86_64: Rename IOMMU option, fix help and mark option embedded.

 - Rename the GART_IOMMU option to IOMMU to make clear it's not
   just for AMD
 - Rewrite the help text to better emphatise this fact
 - Make it an embedded option because too many people get it wrong.

To my astonishment I discovered the aacraid driver tests this
symbol directly. This looks quite broken to me - it's an internal
implementation detail of the PCI DMA API. Can the maintainer
please clarify what this test was intended to do?

Cc: linux-scsi@vger.kernel.org
Cc: alan@redhat.com
Cc: markh@osdl.org
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 4 insertions, 4 deletions

diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig
index 46685a540772..9826a399fa02 100644
--- a/drivers/char/agp/Kconfig
+++ b/drivers/char/agp/Kconfig
@@ -55,9 +55,9 @@ config AGP_AMD
           X on AMD Irongate, 761, and 762 chipsets.
 
 config AGP_AMD64
-        tristate "AMD Opteron/Athlon64 on-CPU GART support" if !GART_IOMMU
+        tristate "AMD Opteron/Athlon64 on-CPU GART support" if !IOMMU
         depends on AGP && X86
-        default y if GART_IOMMU
+        default y if IOMMU
         help
           This option gives you AGP support for the GLX component of
           X using the on-CPU northbridge of the AMD Athlon64/Opteron CPUs.
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 229d015757f9..f690ee8cb732 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -292,7 +292,7 @@ static int __devinit aperture_valid(u64 aper, u32 size)
 /*
  * W*s centric BIOS sometimes only set up the aperture in the AGP
  * bridge, not the northbridge. On AMD64 this is handled early
- * in aperture.c, but when GART_IOMMU is not enabled or we run
+ * in aperture.c, but when IOMMU is not enabled or we run
  * on a 32bit kernel this needs to be redone.
  * Unfortunately it is impossible to fix the aperture here because it's too late
  * to allocate that much memory. But at least error out cleanly instead of
@@ -775,7 +775,7 @@ static void __exit agp_amd64_cleanup(void)
 
 /* On AMD64 the PCI driver needs to initialize this driver early
    for the IOMMU, so it has to be called via a backdoor. */
-#ifndef CONFIG_GART_IOMMU
+#ifndef CONFIG_IOMMU
 module_init(agp_amd64_init);
 module_exit(agp_amd64_cleanup);
 #endif