linux-kernel - [PATCH 5.16 0819/1039] ntb_hw_switchtec: Fix pff ioread to read into mmio_part_cfg

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Date:   Mon, 24 Jan 2022 19:43:28 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jeremy Pallotta <jmpallotta@...il.com>,
        Kelvin Cao <kelvin.cao@...rochip.com>,
        Jon Mason <jdmason@...zu.us>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 0819/1039] ntb_hw_switchtec: Fix pff ioread to read into mmio_part_cfg_all

From: Jeremy Pallotta <jmpallotta@...il.com>

[ Upstream commit 32c3d375b0ed84b6acb51ae5ebef35ff0d649d85 ]

Array mmio_part_cfg_all holds the partition configuration of all
partitions, with partition number as index. Fix this by reading into
mmio_part_cfg_all for pff.

Fixes: 0ee28f26f378 ("NTB: switchtec_ntb: Add link management")
Signed-off-by: Jeremy Pallotta <jmpallotta@...il.com>
Signed-off-by: Kelvin Cao <kelvin.cao@...rochip.com>
Signed-off-by: Jon Mason <jdmason@...zu.us>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/ntb/hw/mscc/ntb_hw_switchtec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
index 4c6eb61a6ac62..6603c77c0a848 100644
--- a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
+++ b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
@@ -419,8 +419,8 @@ static void switchtec_ntb_part_link_speed(struct switchtec_ntb *sndev,
 					  enum ntb_width *width)
 {
 	struct switchtec_dev *stdev = sndev->stdev;
-
-	u32 pff = ioread32(&stdev->mmio_part_cfg[partition].vep_pff_inst_id);
+	u32 pff =
+		ioread32(&stdev->mmio_part_cfg_all[partition].vep_pff_inst_id);
 	u32 linksta = ioread32(&stdev->mmio_pff_csr[pff].pci_cap_region[13]);
 
 	if (speed)
-- 
2.34.1