PKGBUILDs/core/linux-espressobin/0010-PCI-aardvark-disable-LOS-state-by-default.patch

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2017-09-14 00:33:18 +00:00
From b081f4e3b6b03881b336991e3c8ddd8a88b1c3d3 Mon Sep 17 00:00:00 2001
2017-09-13 00:05:47 +00:00
From: Victor Gu <xigu@marvell.com>
Date: Fri, 8 Sep 2017 11:53:46 +0200
2017-09-14 00:33:18 +00:00
Subject: [PATCH 10/12] PCI: aardvark: disable LOS state by default
2017-09-13 00:05:47 +00:00
Some PCIe devices do not support LOS, and will cause timeouts if the
root complex forces the LOS state. This patch disables the LOS state
by default.
This is part of fixing bug
https://bugzilla.kernel.org/show_bug.cgi?id=196339, this commit was
reported as the user to be important to get a Intel 7260 mini-PCIe
WiFi card working.
Fixes: 8c39d710363c1 ("PCI: aardvark: Add Aardvark PCI host controller driver")
Signed-off-by: Victor Gu <xigu@marvell.com>
Reviewed-by: Evan Wang <xswang@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
[Thomas: tweak commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
drivers/pci/host/pci-aardvark.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/host/pci-aardvark.c
index 4a563d8526ae..461517a87eca 100644
--- a/drivers/pci/host/pci-aardvark.c
+++ b/drivers/pci/host/pci-aardvark.c
@@ -369,8 +369,7 @@ static void advk_pcie_setup_hw(struct advk_pcie *pcie)
advk_pcie_wait_for_link(pcie);
- reg = PCIE_CORE_LINK_L0S_ENTRY |
- (1 << PCIE_CORE_LINK_WIDTH_SHIFT);
+ reg = (1 << PCIE_CORE_LINK_WIDTH_SHIFT);
advk_writel(pcie, reg, PCIE_CORE_LINK_CTRL_STAT_REG);
reg = advk_readl(pcie, PCIE_CORE_CMD_STATUS_REG);
--
2.14.1