[PATCH v3 05/18] net/bnxt: fix speed change from 200G to 25G on Thor

[Ajit Khaparde]

From: Kalesh AP <kalesh-anakkur.purayil at broadcom.com>

While forcing speed to 200G, driver sets the structure variable
"bp->link_info->link_signal_mode" value to BNXT_SIG_MODE_PAM4.
After that when the user forces the speed back to 25G, this
cached value is not set back to BNXT_SIG_MODE_NRZ which results
in issuing the HWRM_PORT_PHY_CFG command with wrong inputs.

Fixes: c23f9ded0391 ("net/bnxt: support 200G PAM4 link")
Cc: stable at dpdk.org

Reviewed-by: Somnath Kotur <somnath.kotur at broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil at broadcom.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
---
 drivers/net/bnxt/bnxt_hwrm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index c31a5d4226..a1f3a8251f 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -3191,6 +3191,7 @@ static uint16_t bnxt_parse_eth_link_speed(uint32_t conf_link_speed,
 	case RTE_ETH_LINK_SPEED_25G:
 		eth_link_speed =
 			HWRM_PORT_PHY_CFG_INPUT_FORCE_LINK_SPEED_25GB;
+		link_info->link_signal_mode = BNXT_SIG_MODE_NRZ;
 		break;
 	case RTE_ETH_LINK_SPEED_40G:
 		eth_link_speed =
-- 
2.39.2 (Apple Git-143)

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4218 bytes
Desc: S/MIME Cryptographic Signature
URL: <http://mails.dpdk.org/archives/stable/attachments/20231226/5f68184d/attachment.bin>