scsi: qla2xxx: Stop using the SCSI pointer

Instead of using the SCp.ptr field to track whether or not a command is
in flight, use the sp->type field to track this information. sp->type
must be set for proper operation of the qla2xxx driver. See e.g. the
switch (sp->type) statement in qla2x00_ct_entry().

This patch prepares for removal of the SCSI pointer from struct scsi_cmnd.

Link: https://lore.kernel.org/r/20220218195117.25689-43-bvanassche@acm.org
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 47d7fa1..174e80f 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -5201,8 +5201,6 @@ struct secure_flash_update_block_pk {
 
 #define        QLA_DSDS_PER_IOCB       37
 
-#define CMD_SP(Cmnd)           ((Cmnd)->SCp.ptr)
-
 #define QLA_SG_ALL     1024
 
 enum nexus_wait_type {

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index a454634..58c8352 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -739,7 +739,7 @@ void qla2x00_sp_compl(srb_t *sp, int res)
        /* kref: INIT */
        kref_put(&sp->cmd_kref, qla2x00_sp_release);
        cmd->result = res;
-       CMD_SP(cmd) = NULL;
+       sp->type = 0;
        scsi_done(cmd);
        if (comp)
                complete(comp);
@@ -831,7 +831,7 @@ void qla2xxx_qpair_sp_compl(srb_t *sp, int res)
        /* ref: INIT */
        kref_put(&sp->cmd_kref, qla2x00_sp_release);
        cmd->result = res;
-       CMD_SP(cmd) = NULL;
+       sp->type = 0;
        scsi_done(cmd);
        if (comp)
                complete(comp);
@@ -934,8 +934,6 @@ qla2xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
 
        sp->u.scmd.cmd = cmd;
        sp->type = SRB_SCSI_CMD;
-
-       CMD_SP(cmd) = (void *)sp;
        sp->free = qla2x00_sp_free_dma;
        sp->done = qla2x00_sp_compl;
 
@@ -1025,7 +1023,6 @@ qla2xxx_mqueuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd,
 
        sp->u.scmd.cmd = cmd;
        sp->type = SRB_SCSI_CMD;
-       CMD_SP(cmd) = (void *)sp;
        sp->free = qla2xxx_qpair_sp_free_dma;
        sp->done = qla2xxx_qpair_sp_compl;
 
@@ -1071,6 +1068,7 @@ qla2x00_eh_wait_on_command(struct scsi_cmnd *cmd)
        unsigned long wait_iter = ABORT_WAIT_ITER;
        scsi_qla_host_t *vha = shost_priv(cmd->device->host);
        struct qla_hw_data *ha = vha->hw;
+       srb_t *sp = scsi_cmd_priv(cmd);
        int ret = QLA_SUCCESS;
 
        if (unlikely(pci_channel_offline(ha->pdev)) || ha->flags.eeh_busy) {
@@ -1079,10 +1077,9 @@ qla2x00_eh_wait_on_command(struct scsi_cmnd *cmd)
                return ret;
        }
 
-       while (CMD_SP(cmd) && wait_iter--) {
+       while (sp->type && wait_iter--)
                msleep(ABORT_POLLING_PERIOD);
-       }
-       if (CMD_SP(cmd))
+       if (sp->type)
                ret = QLA_FUNCTION_FAILED;
 
        return ret;