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authorThomas Gleixner <tglx@linutronix.de>2008-02-04 16:48:05 +0100
committerIngo Molnar <mingo@elte.hu>2008-02-04 16:48:05 +0100
commitf56d005d30342a45d8af2b75ecccc82200f09600 (patch)
treea7abc52afef135bb63af4334295584508eb60803
parent75ab43bfce51085ffd627c470f48ae49ba6e6da3 (diff)
x86: no CPA on iounmap
When an ioremap is unmapped, do not change the page attributes. There might be another mapping of the same physical address. PAT might detect a conflicting mapping attribute for no good reason. The mapping is removed anyway. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--arch/x86/mm/ioremap.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 4e21231a5ce..ee6648fe6b1 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -240,9 +240,6 @@ void iounmap(volatile void __iomem *addr)
return;
}
- /* Reset the direct mapping. Can block */
- ioremap_change_attr(p->phys_addr, p->size, IOR_MODE_CACHED);
-
/* Finally remove it */
o = remove_vm_area((void *)addr);
BUG_ON(p != o || o == NULL);