From cf2b549fdf3a08ce69f93839250efe694b888c9d Mon Sep 17 00:00:00 2001 From: Victor Gu Date: Fri, 8 Sep 2017 11:53:46 +0200 Subject: [PATCH 3/3] PCI: aardvark: disable LOS state by default 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 Reviewed-by: Evan Wang Reviewed-by: Nadav Haklai [Thomas: tweak commit log.] Signed-off-by: Thomas Petazzoni --- drivers/pci/controller/pci-aardvark.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index 3815027e92b5..331f15a57123 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -367,8 +367,7 @@ 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); -- 2.18.0