linux-kernel - [PATCH 3.4 084/172] bnx2x: Force fundamental reset for EEH recovery

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Message-Id: <1434443826-4929-84-git-send-email-lizf@kernel.org>
Date:	Tue, 16 Jun 2015 16:35:38 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Brian King <brking@...ux.vnet.ibm.com>,
	"David S. Miller" <davem@...emloft.net>,
	Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 084/172] bnx2x: Force fundamental reset for EEH recovery

From: Brian King <brking@...ux.vnet.ibm.com>

3.4.108-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit da293700568ed3d96fcf062ac15d7d7c41377f11 upstream.

EEH recovery for bnx2x based adapters is not reliable on all Power
systems using the default hot reset, which can result in an
unrecoverable EEH error. Forcing the use of fundamental reset
during EEH recovery fixes this.

Signed-off-by: Brian King <brking@...ux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index b8e7f3e..1e274e7 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -10934,6 +10934,10 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
 	/* clean indirect addresses */
 	pci_write_config_dword(bp->pdev, PCICFG_GRC_ADDRESS,
 			       PCICFG_VENDOR_ID_OFFSET);
+
+	/* Set PCIe reset type to fundamental for EEH recovery */
+	pdev->needs_freset = 1;
+
 	/*
 	 * Clean the following indirect addresses for all functions since it
 	 * is not used by the driver.
-- 
1.9.1

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