[PATCH] alpha: pgprot_uncached() comment

Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/asm-alpha/pgtable.h b/include/asm-alpha/pgtable.h
index e139463d9a0e..22b53e369f59 100644
--- a/include/asm-alpha/pgtable.h
+++ b/include/asm-alpha/pgtable.h
@@ -132,6 +132,10 @@
 #define __S110  _PAGE_S(0)
 #define __S111  _PAGE_S(0)
 
+/*
+ * pgprot_noncached() is only for infiniband pci support, and a real
+ * implementation for RAM would be more complicated.
+ */
 #define pgprot_noncached(prot)  (prot)
 
 /*