[PATCH 6.6.y] scsi: qla2xxx: Fix 64G link speed reporting in get_data_rate

[Sasha Levin <sashal@kernel.org>]

From: Nilesh Javali <njavali@marvell.com>

[ Upstream commit 52fba32317ee631faa878725b2f7cd5c08acacd3 ]

qla2x00_get_data_rate() skips updating ha->link_data_rate when the
firmware returns mcp->mb[1] == 0x7.  That value was a legacy sentinel
from before 64G hardware existed, but PORT_SPEED_64GB is now defined as
0x07 and ha->link_data_rate is decoded with the PORT_SPEED_* encoding.
On a 64G-capable adapter a genuine 64G link is therefore dropped, and
the port speed is misreported (port_speed sysfs, fc_host speed, FDMI).

Only 28xx and 29xx support 64G, so accept 0x07 on those adapters while
keeping the legacy filter for older ones.  Also drop the duplicate copy
of the check at the end of the success branch; it repeated the first
assignment with no intervening change.

Fixes: ecc89f25e225 ("scsi: qla2xxx: Add Device ID for ISP28XX")
Cc: stable@vger.kernel.org
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Link: https://patch.msgid.link/20260723050413.3897522-46-njavali@marvell.com
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>
[ Omitted IS_QLA29XX() checks because this branch lacks 29xx adapter support. ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/scsi/qla2xxx/qla_mbx.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 41435e98092a8..dbe84fa47aaf4 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -5649,7 +5649,7 @@ qla2x00_get_data_rate(scsi_qla_host_t *vha)
 		ql_dbg(ql_dbg_mbx, vha, 0x1107,
 		    "Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]);
 	} else {
-		if (mcp->mb[1] != 0x7)
+		if (mcp->mb[1] != 0x7 || IS_QLA28XX(ha))
 			ha->link_data_rate = mcp->mb[1];
 
 		if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
@@ -5660,8 +5660,6 @@ qla2x00_get_data_rate(scsi_qla_host_t *vha)
 
 		ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1108,
 		    "Done %s.\n", __func__);
-		if (mcp->mb[1] != 0x7)
-			ha->link_data_rate = mcp->mb[1];
 	}
 
 	return rval;
-- 
2.53.0