From a433673c37b7306dbf1d268b95243ee42aa273db Mon Sep 17 00:00:00 2001 From: Victor Gu Date: Fri, 8 Sep 2017 11:53:46 +0200 Subject: [PATCH 11/13] 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/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