scsi: qla1280: properly handle 64-bit DMA

Christoph Hellwig · martinkpetersen · commit ac4b1657b752 · 2018-11-06T21:31:28.000-05:00
CONFIG_HIGHMEM is not in fact an indicator for &gt; 32-bit dma addressing
Given that the driver is a bit weird and wants a compile time selection
switch to checking CONFIG_ARCH_DMA_ADDR_T_64BIT instead.

Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
Signed-off-by: Martin K. Petersen &lt;martin.petersen@oracle.com&gt;
diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c
@@ -383,10 +383,7 @@
 
 #include "qla1280.h"
 
-#ifndef BITS_PER_LONG
-#error "BITS_PER_LONG not defined!"
-#endif
-#if (BITS_PER_LONG == 64) || defined CONFIG_HIGHMEM
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
 #define QLA_64BIT_PTR	1
 #endif
 
