diff options
| author | Gustavo Pimentel | 2018-12-07 18:24:37 +0100 |
|---|---|---|
| committer | Lorenzo Pieralisi | 2019-02-12 19:17:33 +0000 |
| commit | 0380cf843c54d9ee506f5dadc00dd4fe524c99a6 (patch) | |
| tree | 7b8a03c5a8547308dda316318c77464a125bf030 /drivers/pci | |
| parent | 2d8ed461dbc9bc734185db92d2b9d1bb7b586b30 (diff) | |
PCI: dwc: Print debug error message when MSI-X entry control mask bit is set
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.
Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Joao Pinto <joao.pinto@synopsys.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware-ep.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index a543c45c7224..5e766af04b66 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -465,8 +465,10 @@ 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); |