korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2025-01-26 07:44:27 +08:00
Code Issues Packages Projects Releases Wiki Activity

iwlwifi: pcie: reconfigure MSI-X HW on resume

Browse Source 
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: 2e5d4a8f61 ("iwlwifi: pcie: Add new configuration to enable MSIX")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Johannes Berg 2017-06-20 12:51:30 +02:00 committed by Luca Coelho
parent 4f555e602b
commit 52848a79b9
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/intel/iwlwifi/pcie/drv.c
View File

@ -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