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Commit 52848a79 authored by Johannes Berg's avatar Johannes Berg Committed by Luca Coelho
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iwlwifi: pcie: reconfigure MSI-X HW on resume 



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: 2e5d4a8f ("iwlwifi: pcie: Add new configuration to enable MSIX")
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent 4f555e60

drivers/net/wireless/intel/iwlwifi/pcie/drv.c

+3 −0
Original line number Diff line number Diff line
@@ -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