linux-kernel - [PATCH 2/2] net: atlantic: remove aq_nic

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Message-Id: <20220713111224.1535938-2-acelan.kao@canonical.com>
Date:   Wed, 13 Jul 2022 19:12:24 +0800
From:   AceLan Kao <acelan.kao@...onical.com>
To:     Igor Russkikh <irusskikh@...vell.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Manuel Ullmann <labre@...teo.de>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] net: atlantic: remove aq_nic_deinit() when resume

From: "Chia-Lin Kao (AceLan)" <acelan.kao@...onical.com>

aq_nic_deinit() has been called while suspending, so we don't have to call
it again on resume.
Actually, call it again leads to another hang issue when resuming from
S3.

Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992345] Call Trace:
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992346] <TASK>
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992348] aq_nic_deinit+0xb4/0xd0 [atlantic]
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992356] aq_pm_thaw+0x7f/0x100 [atlantic]
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992362] pci_pm_resume+0x5c/0x90
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992366] ? pci_pm_thaw+0x80/0x80
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992368] dpm_run_callback+0x4e/0x120
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992371] device_resume+0xad/0x200
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992373] async_resume+0x1e/0x40
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992374] async_run_entry_fn+0x33/0x120
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992377] process_one_work+0x220/0x3c0
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992380] worker_thread+0x4d/0x3f0
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992382] ? process_one_work+0x3c0/0x3c0
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992384] kthread+0x12a/0x150
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992386] ? set_kthread_struct+0x40/0x40
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992387] ret_from_fork+0x22/0x30
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992391] </TASK>
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992392] ---[ end trace 1ec8c79604ed5e0d ]---
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992394] PM: dpm_run_callback(): pci_pm_resume+0x0/0x90 returns -110
Jul 8 03:09:44 u-Precision-7865-Tower kernel: [ 5910.992397] atlantic 0000:02:00.0: PM: failed to resume async: error -110

Fixes: 1809c30b6e5a ("net: atlantic: always deep reset on pm op, fixing up my null deref regression")
Signed-off-by: Chia-Lin Kao (AceLan) <acelan.kao@...onical.com>
---
 drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c b/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
index dbd5263130f9..8647125d60ae 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
@@ -413,9 +413,6 @@ static int atl_resume_common(struct device *dev)
 	pci_set_power_state(pdev, PCI_D0);
 	pci_restore_state(pdev);
 
-	/* Reinitialize Nic/Vecs objects */
-	aq_nic_deinit(nic, !nic->aq_hw->aq_nic_cfg->wol);
-
 	if (netif_running(nic->ndev)) {
 		ret = aq_nic_init(nic);
 		if (ret)
-- 
2.25.1