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

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

drivers/scsi/hpsa.c

+2 −2
Original line number Diff line number Diff line
@@ -6321,11 +6321,11 @@ 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 */