On Fri, Dec 07, 2018 at 06:24:37PM +0100, Gustavo Pimentel wrote:
> Add debug error message when MSI-X entry control mask bit is set, to help
> debug the reason why a MSI-X interrupt is not being triggered.
>
> Cc: Jingoo Han <jingoohan1@xxxxxxxxx>
> Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> Cc: Joao Pinto <joao.pinto@xxxxxxxxxxxx>
> Cc: linux-pci@xxxxxxxxxxxxxxx
> Signed-off-by: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
> ---
> drivers/pci/controller/dwc/pcie-designware-ep.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
Applied to pci/dwc for v5.1, thanks.
Lorenzo
> diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
> index 1e7b022..a969322 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-ep.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
> @@ -466,8 +466,10 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
>
> iounmap(msix_tbl);
>
> - if (vec_ctrl & PCI_MSIX_ENTRY_CTRL_MASKBIT)
> + if (vec_ctrl & PCI_MSIX_ENTRY_CTRL_MASKBIT) {
> + dev_dbg(pci->dev, "MSI-X entry ctrl set\n");
> return -EPERM;
> + }
>
> ret = dw_pcie_ep_map_addr(epc, func_no, ep->msi_mem_phys, msg_addr,
> epc->mem->page_size);
> --
> 2.7.4
>
