From: Avraham Stern Date: Thu, 13 Apr 2023 07:44:14 +0000 (+0300) Subject: wifi: iwlwifi: trans: don't trigger d3 interrupt twice X-Git-Tag: v6.6.7~2736^2~72^2~135 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=277f56a141fc54ef7f9e09dba65fb2e12021411d;p=platform%2Fkernel%2Flinux-starfive.git wifi: iwlwifi: trans: don't trigger d3 interrupt twice When the IPC registers are used for sleep control, setting the IPC sleep bit already triggers an interrupt to the fw, so there is no need to also set the doorbell. Setting also the doorbell triggers the sleep interrupt twice which lead to an assert. Fixes: af08571d3925 ("iwlwifi: pcie: support Bz suspend/resume trigger") Signed-off-by: Avraham Stern Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230413102635.b5f2f6e44d38.I4cb5b6ad4914db47a714e731c4c8b4db679cabce@changeid Signed-off-by: Johannes Berg --- diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index 0a9af1a..40283fe 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -1522,19 +1522,16 @@ static int iwl_pcie_d3_handshake(struct iwl_trans *trans, bool suspend) struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); int ret; - if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_AX210) { + if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_AX210) iwl_write_umac_prph(trans, UREG_DOORBELL_TO_ISR6, suspend ? UREG_DOORBELL_TO_ISR6_SUSPEND : UREG_DOORBELL_TO_ISR6_RESUME); - } else if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) { + else if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) iwl_write32(trans, CSR_IPC_SLEEP_CONTROL, suspend ? CSR_IPC_SLEEP_CONTROL_SUSPEND : CSR_IPC_SLEEP_CONTROL_RESUME); - iwl_write_umac_prph(trans, UREG_DOORBELL_TO_ISR6, - UREG_DOORBELL_TO_ISR6_SLEEP_CTRL); - } else { + else return 0; - } ret = wait_event_timeout(trans_pcie->sx_waitq, trans_pcie->sx_complete, 2 * HZ);