x86: remove kludge from x86_64

The claim is that i386 does it. Just it does not.
So remove it.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 4 deletions

diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c
index b956f5945d67..596c8c88f36d 100644
--- a/arch/x86/kernel/pci-dma_64.c
+++ b/arch/x86/kernel/pci-dma_64.c
@@ -68,10 +68,6 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
         /* Don't invoke OOM killer */
         gfp |= __GFP_NORETRY;
 
-        /* Kludge to make it bug-to-bug compatible with i386. i386
-           uses the normal dma_mask for alloc_coherent. */
-        dma_mask &= *dev->dma_mask;
-
         /* Why <=? Even when the mask is smaller than 4GB it is often
            larger than 16MB and in this case we have a chance of
            finding fitting memory in the next higher zone first. If