From aac2e96bf9cce2bc61c13709d361875d2dbf098d Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Tue, 15 Aug 2017 16:25:25 -0500 Subject: [PATCH] PCI: xilinx: Don't enable config completion interrupts The Xilinx AXI bridge for PCI Express device provides interrupts indicating the completion of config space accesses. We have previously enabled/unmasked them but do nothing with them besides acknowledge them. Leave the interrupts masked in order to avoid servicing a large number of pointless interrupts during boot. Signed-off-by: Paul Burton Signed-off-by: Bjorn Helgaas Cc: Bharat Kumar Gogada Cc: Michal Simek Cc: Ravikiran Gummaluri --- drivers/pci/host/pcie-xilinx.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/host/pcie-xilinx.c index a7880bed56fc..f30d03309c7f 100644 --- a/drivers/pci/host/pcie-xilinx.c +++ b/drivers/pci/host/pcie-xilinx.c @@ -60,6 +60,7 @@ #define XILINX_PCIE_INTR_MST_SLVERR BIT(27) #define XILINX_PCIE_INTR_MST_ERRP BIT(28) #define XILINX_PCIE_IMR_ALL_MASK 0x1FF30FED +#define XILINX_PCIE_IMR_ENABLE_MASK 0x1FF30F0D #define XILINX_PCIE_IDR_ALL_MASK 0xFFFFFFFF /* Root Port Error FIFO Read Register definitions */ @@ -554,8 +555,8 @@ static void xilinx_pcie_init_port(struct xilinx_pcie_port *port) XILINX_PCIE_IMR_ALL_MASK, XILINX_PCIE_REG_IDR); - /* Enable all interrupts */ - pcie_write(port, XILINX_PCIE_IMR_ALL_MASK, XILINX_PCIE_REG_IMR); + /* Enable all interrupts we handle */ + pcie_write(port, XILINX_PCIE_IMR_ENABLE_MASK, XILINX_PCIE_REG_IMR); /* Enable the Bridge enable bit */ pcie_write(port, pcie_read(port, XILINX_PCIE_REG_RPSC) | -- 2.20.1