From: Don Brace don.brace@microsemi.com
[ 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 bader.alisaleh@microsemi.com Reviewed-by: Scott Teel scott.teel@microsemi.com Reviewed-by: Matt Perricone matt.perricone@microsemi.com Signed-off-by: Don Brace don.brace@microsemi.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 910b795fc5eb..e0952882e132 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -4562,7 +4562,7 @@ 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]; } @@ -4579,6 +4579,11 @@ 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 26488e2a7f02..7ffde12d57d4 100644 --- a/drivers/scsi/hpsa_cmd.h +++ b/drivers/scsi/hpsa_cmd.h @@ -513,6 +513,7 @@ struct ioaccel2_sg_element { u8 reserved[3]; u8 chain_indicator; #define IOACCEL2_CHAIN 0x80 +#define IOACCEL2_LAST_SG 0x40 };
/*