[PATCH 2/3] ntb_hw_switchtec: Skip unnecessary re-setup of shared memory window for crosslink case

[Wesley Sheng]

In case of NTB crosslink topology, the setting of shared memory window in
the virtual partition doesn't reset on peer's reboot. So skip the
unnecessary re-setup of shared memory window for that case.

Signed-off-by: Wesley Sheng <wesley.sh...@microchip.com>
Reviewed-by: Logan Gunthorpe <log...@deltatee.com>
---
 drivers/ntb/hw/mscc/ntb_hw_switchtec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c 
b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
index 947ed0b..6cf15c18 100644
--- a/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
+++ b/drivers/ntb/hw/mscc/ntb_hw_switchtec.c
@@ -1459,6 +1459,9 @@ static int switchtec_ntb_reinit_peer(struct switchtec_ntb 
*sndev)
 {
        int rc;
 
+       if (crosslink_is_enabled(sndev))
+               return 0;
+
        dev_info(&sndev->stdev->dev, "reinitialize shared memory window\n");
        rc = config_rsvd_lut_win(sndev, sndev->mmio_peer_ctrl, 0,
                                 sndev->self_partition,
-- 
2.7.4