From: Frederic TEMPORELLI <frederic.temporelli@xxxxxxxxxxxx>
Aic79xx driver for Adaptec 39320 supports 64-bit addressing, but the
initialization code of the driver is wrong: it tests the available memory
size instead of testing the maximum available memory address. This is
necessary to support servers that provides 1 Terabyte of physical memory
space addressing.
Attached is the suggested patch to solve this issue.
[akpm@xxxxxxxx: extern decls never go in .c files]
Signed-off-by: <xavier.bru@xxxxxxxx>
Signed-off-by: <frederic.temporelli@xxxxxxxx>
Cc: Hannes Reinecke <hare@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/scsi/aic7xxx/aic79xx_osm.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff -puN drivers/scsi/aic7xxx/aic79xx_osm.c~aic79xx-wrong-max-memory-at-driver-init drivers/scsi/aic7xxx/aic79xx_osm.c
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c~aic79xx-wrong-max-memory-at-driver-init
+++ a/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -44,6 +44,7 @@
#include "aic79xx_osm.h"
#include "aic79xx_inline.h"
+#include <linux/blkdev.h>
#include <scsi/scsicam.h>
static struct scsi_transport_template *ahd_linux_transport_template = NULL;
@@ -1130,10 +1131,9 @@ ahd_linux_register_host(struct ahd_softc
uint64_t
ahd_linux_get_memsize(void)
{
- struct sysinfo si;
-
- si_meminfo(&si);
- return ((uint64_t)si.totalram << PAGE_SHIFT);
+ /* Need to take in account the max physical address in case
+ * of discontiguous memory. */
+ return ((uint64_t)blk_max_pfn << PAGE_SHIFT);
}
/*
_
-
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