[PATCH v4 44/50] scsi: smartpqi: Stop using the SCSI pointer

Bart Van Assche
2022-02-16T21:04:30Z

Set .cmd_size in the SCSI host template instead of using the SCSI pointer
from struct scsi_cmnd. This patch prepares for removal of the SCSI pointer
from struct scsi_cmnd.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
drivers/scsi/smartpqi/smartpqi_init.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index 4611912ae261..7c0d069a3158 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -54,6 +54,15 @@ MODULE_DESCRIPTION("Driver for Microchip Smart Family Controller version "
MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL");

+struct pqi_cmd_priv {
+ int this_residual;
+};
+
+static struct pqi_cmd_priv *pqi_cmd_priv(struct scsi_cmnd *cmd)
+{
+ return scsi_cmd_priv(cmd);
+}
+
static void pqi_verify_structures(void);
static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info,
enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason);
@@ -5552,7 +5561,7 @@ static void pqi_aio_io_complete(struct pqi_io_request *io_request,
scsi_dma_unmap(scmd);
if (io_request->status == -EAGAIN || pqi_raid_bypass_retry_needed(io_request)) {
set_host_byte(scmd, DID_IMM_RETRY);
- scmd->SCp.this_residual++;
+ pqi_cmd_priv(scmd)->this_residual++;
}

pqi_free_io_request(io_request);
@@ -5814,7 +5823,7 @@ static inline bool pqi_is_bypass_eligible_request(struct scsi_cmnd *scmd)
if (blk_rq_is_passthrough(scsi_cmd_to_rq(scmd)))
return false;

- return scmd->SCp.this_residual == 0;
+ return pqi_cmd_priv(scmd)->this_residual == 0;
}

/*
@@ -7262,6 +7271,7 @@ static struct scsi_host_template pqi_driver_template = {
.map_queues = pqi_map_queues,
.sdev_groups = pqi_sdev_groups,
.shost_groups = pqi_shost_groups,
+ .cmd_size = sizeof(struct pqi_cmd_priv),
};

static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)