diff mbox series

[v4,1/2] PCI: dwc: Skip PCIE_MSI_INTR0* programming if MSI is disabled

Message ID 20200929183431.0efda17c@xhacker.debian
State Superseded
Headers show
Series PCI: dwc: fix two MSI issues | expand

Commit Message

Jisheng Zhang Sept. 29, 2020, 10:34 a.m. UTC 
If MSI is disabled, there's no need to program PCIE_MSI_INTR0_MASK
and PCIE_MSI_INTR0_ENABLE registers.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
---
 drivers/pci/controller/dwc/pcie-designware-host.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 9dafecba347f..f08f4d97f321 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -632,7 +632,7 @@  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 */