From 26566830cacb73fabed8f53d8aec256b789570a1 Mon Sep 17 00:00:00 2001 From: Don Brace Date: Mon, 3 Jun 2019 16:43:29 -0500 Subject: [PATCH] scsi: hpsa: correct ioaccel2 chaining [ Upstream commit 625d7d3518875c4d303c652a198feaa13d9f52d9 ] - set ioaccel2_sg_element member 'chain_indicator' to IOACCEL2_LAST_SG for the last s/g element. - set ioaccel2_sg_element member 'chain_indicator' to IOACCEL2_CHAIN when chaining. Reviewed-by: Bader Ali - Saleh Reviewed-by: Scott Teel Reviewed-by: Matt Perricone Signed-off-by: Don Brace Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/hpsa.c | 7 ++++++- drivers/scsi/hpsa_cmd.h | 1 + 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 5b4b7f9be2d7..6d520e8945f7 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -4800,7 +4800,7 @@ static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h, curr_sg->reserved[0] = 0; curr_sg->reserved[1] = 0; curr_sg->reserved[2] = 0; - curr_sg->chain_indicator = 0x80; + curr_sg->chain_indicator = IOACCEL2_CHAIN; curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex]; } @@ -4817,6 +4817,11 @@ static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h, curr_sg++; } + /* + * Set the last s/g element bit + */ + (curr_sg - 1)->chain_indicator = IOACCEL2_LAST_SG; + switch (cmd->sc_data_direction) { case DMA_TO_DEVICE: cp->direction &= ~IOACCEL2_DIRECTION_MASK; diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h index 078afe448115..ecf15344b55d 100644 --- a/drivers/scsi/hpsa_cmd.h +++ b/drivers/scsi/hpsa_cmd.h @@ -516,6 +516,7 @@ struct ioaccel2_sg_element { u8 reserved[3]; u8 chain_indicator; #define IOACCEL2_CHAIN 0x80 +#define IOACCEL2_LAST_SG 0x40 }; /* -- 2.20.1