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hpsa-fix-chainsize-calculation
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hpsa-fix-chainsize-calculation
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hpsa: correct off-by-one sizing of chained SG block
From: Webb Scales <webbnh@hp.com>
Signed-off-by: Webb Scales <webbnh@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Reviewed-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
---
drivers/scsi/hpsa.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 87c8c49..bd04092 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -6318,11 +6318,11 @@ static void hpsa_find_board_params(struct ctlr_info *h)
h->max_cmd_sg_entries = 31;
if (h->maxsgentries > 512) {
h->max_cmd_sg_entries = 32;
- h->chainsize = h->maxsgentries - h->max_cmd_sg_entries + 1;
+ h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
h->maxsgentries--; /* save one for chain pointer */
} else {
- h->maxsgentries = 31; /* default to traditional values */
h->chainsize = 0;
+ h->maxsgentries = 31; /* default to traditional values */
}
/* Find out what task management functions are supported and cache */