From: Johannes Berg <johannes.berg@xxxxxxxxx>
When going into suspend, the HW configuration for MSI-X will
likely be lost. As a consequence, after waking up, all IRQ
causes will be mapped to interrupt 0, and as a consequence we
don't notice the interrupt because in most cases this is an
interrupt for a queue, and getting it doesn't read the other
cause registers.
Fixes: 2e5d4a8f61dc ("iwlwifi: pcie: Add new configuration to enable MSIX")
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
---
drivers/net/wireless/intel/iwlwifi/pcie/drv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
index 3ca0f374c081..f16c1bb9bf94 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
@@ -799,6 +799,9 @@ static int iwl_pci_resume(struct device *device)
if (!trans->op_mode)
return 0;
+ /* reconfigure the MSI-X mapping to get the correct IRQ for rfkill */
+ iwl_pcie_conf_msix_hw(trans_pcie);
+
/*
* Enable rfkill interrupt (in order to keep track of the rfkill
* status). Must be locked to avoid processing a possible rfkill
--
2.11.0
