scsi: ips: properly handle 64-bit DMA

CONFIG_HIGHMEM64 is only one (and these days unusual) way to indicate
that > 32-bit dma address are possible.  Replace it with a check of the
dma_addr_t size.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c
index 679321e..70a776d 100644 (file)
--- a/drivers/scsi/ips.c
+++ b/drivers/scsi/ips.c
@@ -6926,7 +6926,7 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr)
         * it!  Also, don't use 64bit addressing if dma addresses
         * are guaranteed to be < 4G.
         */
-       if (IPS_ENABLE_DMA64 && IPS_HAS_ENH_SGLIST(ha) &&
+       if (sizeof(dma_addr_t) > 4 && IPS_HAS_ENH_SGLIST(ha) &&
            !dma_set_mask(&ha->pcidev->dev, DMA_BIT_MASK(64))) {
                (ha)->flags |= IPS_HA_ENH_SG;
        } else {

diff --git a/drivers/scsi/ips.h b/drivers/scsi/ips.h
index 42c180e..6c0678f 100644 (file)
--- a/drivers/scsi/ips.h
+++ b/drivers/scsi/ips.h
@@ -96,12 +96,6 @@
       #define __iomem
    #endif
 
-   #if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G)
-      #define IPS_ENABLE_DMA64        (1)
-   #else
-      #define IPS_ENABLE_DMA64        (0)
-   #endif
-
    /*
     * Adapter address map equates
     */