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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 <Jisheng.Zhang@synaptics.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
This commit is contained in:
Jisheng Zhang 2020-10-09 15:54:36 +08:00 committed by Lorenzo Pieralisi
parent b101a39897
commit 7428332491
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/controller/dwc/pcie-designware-host.c
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@ -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 */