diff mbox series

[v4,2/4] PCI: cadence: Write MSI data with 32bits

Message ID 1539274554-32252-1-git-send-email-adouglas@cadence.com
State Accepted
Delegated to: Lorenzo Pieralisi
Headers show
Series Fixes for cadence EP driver | expand

Commit Message

Alan Douglas Oct. 11, 2018, 4:15 p.m. UTC 
According to the PCIe specification, although the MSI data is only
16bits, the upper 16bits should be written as 0.  Use writel
instead of writew when writing the MSI data to the host.

Fixes: 37dddf14f1ae ("PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller")
Signed-off-by: Alan Douglas <adouglas@cadence.com>
---
 drivers/pci/controller/pcie-cadence-ep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/pci/controller/pcie-cadence-ep.c b/drivers/pci/controller/pcie-cadence-ep.c
index 6692654..c3a0889 100644
--- a/drivers/pci/controller/pcie-cadence-ep.c
+++ b/drivers/pci/controller/pcie-cadence-ep.c
@@ -355,7 +355,7 @@  static int cdns_pcie_ep_send_msi_irq(struct cdns_pcie_ep *ep, u8 fn,
 		ep->irq_pci_addr = (pci_addr & ~pci_addr_mask);
 		ep->irq_pci_fn = fn;
 	}
-	writew(data, ep->irq_cpu_addr + (pci_addr & pci_addr_mask));
+	writel(data, ep->irq_cpu_addr + (pci_addr & pci_addr_mask));
 
 	return 0;
 }