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scsi: hpsa: correct ioaccel2 chaining 

- 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>
hifive-unleashed-5.2
Don Brace 2019-06-03 16:43:29 -05:00 committed by Martin K. Petersen
parent cc8f52609b
commit 625d7d3518
2 changed files with 7 additions and 1 deletions
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7
drivers/scsi/hpsa.c
View File

@ -4940,7 +4940,7 @@ 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];
}
@ -4957,6 +4957,11 @@ 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;

1
drivers/scsi/hpsa_cmd.h
View File

@ -517,6 +517,7 @@ struct ioaccel2_sg_element {
u8 reserved[3];
u8 chain_indicator;
#define IOACCEL2_CHAIN 0x80
#define IOACCEL2_LAST_SG 0x40
};
/*