Improve 3ware controller performance on certain motherboards.

https://bugzilla.redhat.com/show_bug.cgi?id=444759
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1e6c38cec08f88b0df88a34e80f15492cace74e9

diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index f29fec393c02a69dc63441df80571c05bb0fd883..e4d4e0b1d01e0cd450821faf0bd1b10474f9fe7e 100644 (file)
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -89,6 +89,7 @@
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_tcq.h>
 #include <scsi/scsi_cmnd.h>
+#include <linux/libata.h>
 #include "3w-9xxx.h"
 
 /* Globals */
@@ -2062,6 +2063,7 @@ static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id
        }
 
        pci_set_master(pdev);
+       pci_try_set_mwi(pdev);
 
        retval = pci_set_dma_mask(pdev, sizeof(dma_addr_t) > 4 ? DMA_64BIT_MASK : DMA_32BIT_MASK);
        if (retval) {