From 0e8ec39cfdaa02476ac61c1ae492db9466d2957c Mon Sep 17 00:00:00 2001 From: Jisheng Zhang Date: Fri, 9 Oct 2020 15:54:36 +0800 Subject: [PATCH] PCI: dwc: Skip PCIE_MSI_INTR0* programming if MSI is disabled If MSI is disabled, there's no need to program PCIE_MSI_INTR0_MASK and PCIE_MSI_INTR0_ENABLE registers. Link: https://lore.kernel.org/r/20201009155436.27e67238@xhacker.debian Signed-off-by: Jisheng Zhang Signed-off-by: Lorenzo Pieralisi Reviewed-by: Rob Herring Acked-by: Gustavo Pimentel --- drivers/pci/controller/dwc/pcie-designware-host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index 317ff512f8dfd..d3e9ea11ce9e6 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -528,7 +528,7 @@ void dw_pcie_setup_rc(struct pcie_port *pp) dw_pcie_setup(pci); - if (!pp->ops->msi_host_init) { + if (pci_msi_enabled() && !pp->ops->msi_host_init) { num_ctrls = pp->num_vectors / MAX_MSI_IRQS_PER_CTRL; /* Initialize IRQ Status array */ -- 2.39.5