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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>
This commit is contained in:
Christoph Hellwig 2018-10-18 15:03:34 +02:00 committed by Martin K. Petersen
parent 6f6eb3ccc6
commit 88693b3c96
2 changed files with 1 additions and 7 deletions
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2
drivers/scsi/ips.c
View File

@ -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 {

6
drivers/scsi/ips.h
View File

@ -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
*/