[PATCH 5.15 486/917] iwlwifi: mvm: reset PM state on unsuccessful resume

Greg Kroah-Hartman
2021-11-15T23:42:38Z

From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit 2f629a7772e2a7bdaff25178917a40073f79702c ]

If resume fails for some reason, we need to set the PM state
back to normal so we're able to send commands during firmware
reset, rather than failing all of them because we're in D3.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fixes: 708a39aaca22 ("iwlwifi: mvm: don't send commands during suspend\resume transition")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20211016114029.7ceb9eaca9f6.If0cbef38c6d07ec1ddce125878a4bdadcb35d2c9@changeid
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
index 9f706fffb5922..d3013a51a5096 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
@@ -2336,7 +2336,6 @@ static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
false, 0);
ret = 1;
- mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
goto err;
}

@@ -2385,6 +2384,7 @@ static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
}
}

+ /* after the successful handshake, we're out of D3 */
mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;

/*
@@ -2455,6 +2455,9 @@ out:
*/
set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);

+ /* regardless of what happened, we're now out of D3 */
+ mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
+
return 1;
}

--
2.33.0