fusion: remove dead MTRR code

If and when this gets enabled the driver could should split
up IO memory space properly and that is quite a bit of work.
Just remove the uncommented dead MTRR code then.

There are a few motivations for this:

a) Take advantage of PAT when available

b) Help bury MTRR code away, MTRR is architecture specific and on
   x86 its replaced by PAT

c) Help with the goal of eventually using _PAGE_CACHE_UC over
   _PAGE_CACHE_UC_MINUS on x86 on ioremap_nocache() (see commit
   de33c442e titled "x86 PAT: fix performance drop for glx,
   use UC minus for ioremap(), ioremap_nocache() and
   pci_mmap_page_range()")

Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Acked-by: Sreekanth Reddy <ureekanth.reddy@avagotech.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index 8f14090b8b71..813d46311f6a 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -671,7 +671,6 @@ typedef struct _MPT_ADAPTER
         u8                      *HostPageBuffer; /* SAS - host page buffer support */
         u32                     HostPageBuffer_sz;
         dma_addr_t              HostPageBuffer_dma;
-        int                      mtrr_reg;
         struct pci_dev          *pcidev;        /* struct pci_dev pointer */
         int                     bars;           /* bitmask of BAR's that must be configured */
         int                     msi_enable;