On 2016-03-31 01:25, Bart Van Assche wrote:
Detected these variables by building the qla2xxx driver with W=1.
Note: removing the code that sets BIT_14 is fine since that bit is
never tested. The output of git grep -nH -- '->cmd_flags\s*&'
drivers/scsi/qla2xxx
is as follows:
drivers/scsi/qla2xxx/tcm_qla2xxx.c:285: WARN_ON(cmd->cmd_flags &
BIT_16);
drivers/scsi/qla2xxx/tcm_qla2xxx.c:302: BUG_ON(cmd->cmd_flags &
BIT_20);
drivers/scsi/qla2xxx/tcm_qla2xxx.c:627: if (cmd->cmd_flags & BIT_5) {
Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Cc: Quinn Tran <quinn.tran@xxxxxxxxxx>
Cc: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
---
drivers/scsi/qla2xxx/qla_attr.c | 3 +--
drivers/scsi/qla2xxx/qla_mbx.c | 2 --
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 7 -------
3 files changed, 1 insertion(+), 11 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_attr.c
b/drivers/scsi/qla2xxx/qla_attr.c
index 4dc06a13..db85c5c 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -839,7 +839,6 @@ qla2x00_issue_logo(struct file *filp, struct
kobject *kobj,
struct scsi_qla_host *vha =
shost_priv(dev_to_shost(container_of(kobj,
struct device, kobj)));
int type;
- int rval = 0;
port_id_t did;
type = simple_strtol(buf, NULL, 10);
@@ -853,7 +852,7 @@ qla2x00_issue_logo(struct file *filp, struct
kobject *kobj,
ql_log(ql_log_info, vha, 0x70e4, "%s: %d\n", __func__, type);
- rval = qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, did);
+ qla24xx_els_dcmd_iocb(vha, ELS_DCMD_LOGO, did);
return count;
}
OK, qla24xx_els_dcmd_iocb() is a bit scary. It can return -ENOMEM, but
no caller checks it (the 2nd caller _only_ checks the return value in a
debug message). Maybe we should think about that.
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c
b/drivers/scsi/qla2xxx/qla_mbx.c
index 968b846..bf2d357 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -607,7 +607,6 @@ qla_set_exlogin_mem_cfg(scsi_qla_host_t *vha,
dma_addr_t phys_addr)
mbx_cmd_t mc;
mbx_cmd_t *mcp = &mc;
struct qla_hw_data *ha = vha->hw;
- int configured_count;
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x111a,
"Entered %s.\n", __func__);
@@ -630,7 +629,6 @@ qla_set_exlogin_mem_cfg(scsi_qla_host_t *vha,
dma_addr_t phys_addr)
/*EMPTY*/
ql_dbg(ql_dbg_mbx, vha, 0x111b, "Failed=%x.\n", rval);
} else {
- configured_count = mcp->mb[11];
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x118c,
"Done %s.\n", __func__);
}
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index c1461d2..97fcbf2 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -311,13 +311,6 @@ static void tcm_qla2xxx_free_cmd(struct
qla_tgt_cmd *cmd)
*/
static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
{
- struct qla_tgt_cmd *cmd;
-
- if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
- cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
- cmd->cmd_flags |= BIT_14;
- }
-
return target_put_sess_cmd(se_cmd);
}
Apart from the qla24xx_els_dcmd_iocb() thingy (which has nothing to do
with your patch)
Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
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