linux-kernel - [PATCH] e1000e: Add "cnp" PCH boards to the packet loss fixing workaround

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Message-Id: <20230514093428.113471-1-kovalev@altlinux.org>
Date:   Sun, 14 May 2023 12:34:28 +0300
From:   kovalev@...linux.org
To:     kovalev@...linux.org, jesse.brandeburg@...el.com,
        anthony.l.nguyen@...el.com, davem@...emloft.net, kuba@...nel.org,
        sasha.neftin@...el.com, jeffrey.t.kirsher@...el.com,
        intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] e1000e: Add "cnp" PCH boards to the packet loss fixing workaround

From: Vasiliy Kovalev <kovalev@...linux.org>

Add CannonLake and some Comet Lake Client Platform into the range
of workaround for packet loss issue.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=217436
Fixes: 639e298f432fb0 ("e1000e: Fix packet loss on Tiger Lake and later")
Signed-off-by: Vasiliy Kovalev <kovalev@...linux.org>
---
 drivers/net/ethernet/intel/e1000e/ich8lan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
index 9466f65a6da77..e233a0b93bcf1 100644
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -4875,7 +4875,7 @@ static s32 e1000_init_hw_ich8lan(struct e1000_hw *hw)
 	/* Enable workaround for packet loss issue on TGP PCH
 	 * Do not gate DMA clock from the modPHY block
 	 */
-	if (mac->type >= e1000_pch_tgp) {
+	if (mac->type >= e1000_pch_cnp) {
 		fflt_dbg = er32(FFLT_DBG);
 		fflt_dbg |= E1000_FFLT_DBG_DONT_GATE_WAKE_DMA_CLK;
 		ew32(FFLT_DBG, fflt_dbg);
-- 
2.33.6