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authorEmmanuel Grumbach <emmanuel.grumbach@intel.com>2024-10-28 13:54:54 +0200
committerJohannes Berg <johannes.berg@intel.com>2024-11-07 14:42:29 +0100
commitd1a54ec21b8e7bca59141ff1ac6ce73e07d744f2 (patch)
tree0d50ab237daff6cc2b69c9051a336ebcd38a5996 /drivers/net/wireless/intel/iwlwifi/mvm
parente53ebc72054efca12e0329d69342e3daf7250a5a (diff)
wifi: iwlwifi: mvm: tell iwlmei when we finished suspending
Since we no longer shut down the device in suspend, we also no longer call iwl_mvm_mei_device_state() and this is a problem because iwlmei expects this to be called when it runs its own suspend sequence. It checks mei->device_down in iwl_mei_remove() which is called upon suspend. Fix this by telling iwlmei when we're done accessing the device. When we'll wake up, the device should be untouched if CSME didn't use it during the suspend time. If CSME used it, we'll notice it through the CSR_FUNC_SCRATCH register. Fixes: e8bb19c1d590 ("wifi: iwlwifi: support fast resume") Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://patch.msgid.link/20241028135215.525287b90af2.Ibf183824471ea5580d9276d104444e53191e6900@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 4616a5b394c0..23ccbe7b74c0 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -1237,6 +1237,7 @@ int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
fast_resume = mvm->fast_resume;
if (fast_resume) {
+ iwl_mvm_mei_device_state(mvm, true);
ret = iwl_mvm_fast_resume(mvm);
if (ret) {
iwl_mvm_stop_device(mvm);
@@ -1371,10 +1372,13 @@ void __iwl_mvm_mac_stop(struct iwl_mvm *mvm, bool suspend)
iwl_mvm_rm_aux_sta(mvm);
if (suspend &&
- mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000)
+ mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
iwl_mvm_fast_suspend(mvm);
- else
+ /* From this point on, we won't touch the device */
+ iwl_mvm_mei_device_state(mvm, false);
+ } else {
iwl_mvm_stop_device(mvm);
+ }
iwl_mvm_async_handlers_purge(mvm);
/* async_handlers_list is empty and will stay empty: HW is stopped */