[PATCH v4 45/50] scsi: sym53c8xx_2: Move the SCSI pointer to private command data

Bart Van Assche
2022-02-16T21:04:44Z

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/sym53c8xx_2/sym_glue.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c
index b04bfde65e3f..2e2852bd5860 100644
--- a/drivers/scsi/sym53c8xx_2/sym_glue.c
+++ b/drivers/scsi/sym53c8xx_2/sym_glue.c
@@ -118,7 +118,7 @@ struct sym_ucmd { /* Override the SCSI pointer structure */
struct completion *eh_done; /* SCSI error handling */
};

-#define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
+#define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)scsi_cmd_priv(cmd))
#define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)

/*
@@ -127,7 +127,6 @@ struct sym_ucmd { /* Override the SCSI pointer structure */
void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd)
{
struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
- BUILD_BUG_ON(sizeof(struct scsi_pointer) < sizeof(struct sym_ucmd));

if (ucmd->eh_done)
complete(ucmd->eh_done);
@@ -1630,6 +1629,7 @@ static struct scsi_host_template sym2_template = {
.module = THIS_MODULE,
.name = "sym53c8xx",
.info = sym53c8xx_info,
+ .cmd_size = sizeof(struct sym_ucmd),
.queuecommand = sym53c8xx_queue_command,
.slave_alloc = sym53c8xx_slave_alloc,
.slave_configure = sym53c8xx_slave_configure,