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. Signed-off-by: Alan Douglas <adouglas@xxxxxxxxxxx> --- drivers/pci/controller/pcie-cadence-ep.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) 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; } -- 1.7.1
