Commit 1a63ea6f authored by Webb Scales's avatar Webb Scales Committed by Christoph Hellwig

hpsa: correct off-by-one sizing of chained SG block

Correct the size calculation of the chained SG block
Signed-off-by: default avatarDon Brace <don.brace@pmcs.com>
Signed-off-by: default avatarWebb Scales <webbnh@hp.com>
Reviewed-by: default avatarStephen M. Cameron <stephenmcameron@gmail.com>
Reviewed-by: default avatarDon Brace <don.brace@pmcs.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 7d2cce58
...@@ -6321,11 +6321,11 @@ static void hpsa_find_board_params(struct ctlr_info *h) ...@@ -6321,11 +6321,11 @@ static void hpsa_find_board_params(struct ctlr_info *h)
h->max_cmd_sg_entries = 31; h->max_cmd_sg_entries = 31;
if (h->maxsgentries > 512) { if (h->maxsgentries > 512) {
h->max_cmd_sg_entries = 32; 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 */ h->maxsgentries--; /* save one for chain pointer */
} else { } else {
h->maxsgentries = 31; /* default to traditional values */
h->chainsize = 0; h->chainsize = 0;
h->maxsgentries = 31; /* default to traditional values */
} }
/* Find out what task management functions are supported and cache */ /* Find out what task management functions are supported and cache */
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment