[PATCH 5.16 0884/1017] scsi: qla2xxx: edif: Fix clang warning

Greg Kroah-Hartman
2022-04-05T10:28:03Z

From: Quinn Tran <qutran@marvell.com>

commit 73825fd7a37c1a685e9e9e27c9dc91ef1f3e2971 upstream.

Silence compile warning due to unaligned memory access.

qla_edif.c:713:45: warning: taking address of packed member 'u' of class or
structure 'auth_complete_cmd' may result in an unaligned pointer value
[-Waddress-of-packed-member]
fcport = qla2x00_find_fcport_by_pid(vha, &appplogiok.u.d_id);

Link: https://lore.kernel.org/r/20220110050218.3958-13-njavali@marvell.com
Cc: stable@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/scsi/qla2xxx/qla_edif.c | 22 +++++++++++++++++++---
1 file changed, 19 insertions(+), 3 deletions(-)

--- a/drivers/scsi/qla2xxx/qla_edif.c
+++ b/drivers/scsi/qla2xxx/qla_edif.c
@@ -668,6 +668,11 @@ qla_edif_app_authok(scsi_qla_host_t *vha
bsg_job->request_payload.sg_cnt, &appplogiok,
sizeof(struct auth_complete_cmd));

+ /* silent unaligned access warning */
+ portid.b.domain = appplogiok.u.d_id.b.domain;
+ portid.b.area = appplogiok.u.d_id.b.area;
+ portid.b.al_pa = appplogiok.u.d_id.b.al_pa;
+
switch (appplogiok.type) {
case PL_TYPE_WWPN:
fcport = qla2x00_find_fcport_by_wwpn(vha,
@@ -678,7 +683,7 @@ qla_edif_app_authok(scsi_qla_host_t *vha
__func__, appplogiok.u.wwpn);
break;
case PL_TYPE_DID:
- fcport = qla2x00_find_fcport_by_pid(vha, &appplogiok.u.d_id);
+ fcport = qla2x00_find_fcport_by_pid(vha, &portid);
if (!fcport)
ql_dbg(ql_dbg_edif, vha, 0x911d,
"%s d_id lookup failed: %x\n", __func__,
@@ -777,6 +782,11 @@ qla_edif_app_authfail(scsi_qla_host_t *v
bsg_job->request_payload.sg_cnt, &appplogifail,
sizeof(struct auth_complete_cmd));

+ /* silent unaligned access warning */
+ portid.b.domain = appplogifail.u.d_id.b.domain;
+ portid.b.area = appplogifail.u.d_id.b.area;
+ portid.b.al_pa = appplogifail.u.d_id.b.al_pa;
+
/*
* TODO: edif: app has failed this plogi. Inform driver to
* take any action (if any).
@@ -788,7 +798,7 @@ qla_edif_app_authfail(scsi_qla_host_t *v
SET_DID_STATUS(bsg_reply->result, DID_OK);
break;
case PL_TYPE_DID:
- fcport = qla2x00_find_fcport_by_pid(vha, &appplogifail.u.d_id);
+ fcport = qla2x00_find_fcport_by_pid(vha, &portid);
if (!fcport)
ql_dbg(ql_dbg_edif, vha, 0x911d,
"%s d_id lookup failed: %x\n", __func__,
@@ -1253,6 +1263,7 @@ qla24xx_sadb_update(struct bsg_job *bsg_
int result = 0;
struct qla_sa_update_frame sa_frame;
struct srb_iocb *iocb_cmd;
+ port_id_t portid;

ql_dbg(ql_dbg_edif + ql_dbg_verbose, vha, 0x911d,
"%s entered, vha: 0x%p\n", __func__, vha);
@@ -1276,7 +1287,12 @@ qla24xx_sadb_update(struct bsg_job *bsg_
goto done;
}

- fcport = qla2x00_find_fcport_by_pid(vha, &sa_frame.port_id);
+ /* silent unaligned access warning */
+ portid.b.domain = sa_frame.port_id.b.domain;
+ portid.b.area = sa_frame.port_id.b.area;
+ portid.b.al_pa = sa_frame.port_id.b.al_pa;
+
+ fcport = qla2x00_find_fcport_by_pid(vha, &portid);
if (fcport) {
found = 1;
if (sa_frame.flags == QLA_SA_UPDATE_FLAGS_TX_KEY)