An MSI-based SHPC built in PCI bridges can configure hotplugged devices
only if they notify the bridge with MSI.
But they can't trigger interrupt without the bridge being busmaster,
that's why it should be enabled.
Signed-off-by: Aleksandr Bezzubikov <zuban32s@xxxxxxxxx>
---
drivers/pci/hotplug/shpchp_hpc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pci/hotplug/shpchp_hpc.c b/drivers/pci/hotplug/shpchp_hpc.c
index de0ea47..e5824c7 100644
--- a/drivers/pci/hotplug/shpchp_hpc.c
+++ b/drivers/pci/hotplug/shpchp_hpc.c
@@ -1062,6 +1062,8 @@ int shpc_init(struct controller *ctrl, struct pci_dev *pdev)
if (rc) {
ctrl_info(ctrl, "Can't get msi for the hotplug controller\n");
ctrl_info(ctrl, "Use INTx for the hotplug controller\n");
+ } else {
+ pci_set_master(pdev);
}
rc = request_irq(ctrl->pci_dev->irq, shpc_isr, IRQF_SHARED,
--
2.7.4
