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| author | John Garry <john.garry@huawei.com> | 2022-10-18 19:16:01 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-10-22 03:02:51 +0000 |
| commit | 6472cfb418a0ba783a469deeb6586fb2f133c268 (patch) | |
| tree | c1dbfc45b7401749dacb68aec8964947416de487 /drivers/scsi/pm8001/pm8001_init.c | |
| parent | 1baa70d36403aa572453eee9fdd4f637455ecaaf (diff) | |
| download | lwn-6472cfb418a0ba783a469deeb6586fb2f133c268.tar.gz lwn-6472cfb418a0ba783a469deeb6586fb2f133c268.zip | |
scsi: pm8001: Use sas_task_find_rq() for tagging
The request associated with a SCSI command coming from the block layer has
a unique tag, so use that when possible for getting a CCB.
Unfortunately we don't support reserved commands in the SCSI midlayer yet,
so in the interim continue to manage those tags internally (along with
tags for private commands).
Signed-off-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1666091763-11023-6-git-send-email-john.garry@huawei.com
Reviewed-by: Jack Wang <jinpu.wang@ionos.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/pm8001/pm8001_init.c')
| -rw-r--r-- | drivers/scsi/pm8001/pm8001_init.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c index 040a8280f23b..a1df61205b20 100644 --- a/drivers/scsi/pm8001/pm8001_init.c +++ b/drivers/scsi/pm8001/pm8001_init.c @@ -196,7 +196,7 @@ static void pm8001_free(struct pm8001_hba_info *pm8001_ha) } PM8001_CHIP_DISP->chip_iounmap(pm8001_ha); flush_workqueue(pm8001_wq); - bitmap_free(pm8001_ha->tags); + bitmap_free(pm8001_ha->rsvd_tags); kfree(pm8001_ha); } @@ -1208,18 +1208,15 @@ static int pm8001_init_ccb_tag(struct pm8001_hba_info *pm8001_ha) struct Scsi_Host *shost = pm8001_ha->shost; struct device *dev = pm8001_ha->dev; u32 max_out_io, ccb_count; - u32 can_queue; int i; max_out_io = pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io; ccb_count = min_t(int, PM8001_MAX_CCB, max_out_io); - /* Update to the scsi host*/ - can_queue = ccb_count - PM8001_RESERVE_SLOT; - shost->can_queue = can_queue; + shost->can_queue = ccb_count - PM8001_RESERVE_SLOT; - pm8001_ha->tags = bitmap_zalloc(ccb_count, GFP_KERNEL); - if (!pm8001_ha->tags) + pm8001_ha->rsvd_tags = bitmap_zalloc(PM8001_RESERVE_SLOT, GFP_KERNEL); + if (!pm8001_ha->rsvd_tags) goto err_out; /* Memory region for ccb_info*/ @@ -1244,7 +1241,6 @@ static int pm8001_init_ccb_tag(struct pm8001_hba_info *pm8001_ha) pm8001_ha->ccb_info[i].task = NULL; pm8001_ha->ccb_info[i].ccb_tag = PM8001_INVALID_TAG; pm8001_ha->ccb_info[i].device = NULL; - ++pm8001_ha->tags_num; } return 0; |