From: Peter Ujfalusi Date: Tue, 18 Oct 2022 12:40:08 +0000 (+0300) Subject: ASoC: SOF: Intel: ipc4: Ack a received reply or notification separately X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=010c050fe9ea263e3fc17493822117610a23f662;p=linux.git ASoC: SOF: Intel: ipc4: Ack a received reply or notification separately By acking a received message we tell the DSP that we have processed the message (reply or notification) and we are open to receive a new one. The original implementation did this in a common code after the received message got handled as reply or notification. With right timing this opens up a small window when we have processed the reply and let the other thread proceed to send a new message to the DSP, which is allowed as the DSP is free to receive message. But when the message is received and processed by the DSP and it wants to send a reply it will still see that the previous message has not been acked, so it fails to send a reply. Later the first reply got acked by the kernel, but it is too late and the in-flight message got a timeout due to firmware not responding (which it tried, but could not). Signed-off-by: Peter Ujfalusi Reviewed-by: Kai Vehmanen Reviewed-by: Pierre-Louis Bossart Reviewed-by: Ranjani Sridharan Reviewed-by: Rander Wang Link: https://lore.kernel.org/r/20221018124008.6846-5-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown --- diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c index 4bf233787757f..da26f0ce9abcb 100644 --- a/sound/soc/sof/intel/cnl.c +++ b/sound/soc/sof/intel/cnl.c @@ -72,6 +72,7 @@ irqreturn_t cnl_ipc4_irq_thread(int irq, void *context) spin_lock_irq(&sdev->ipc_lock); snd_sof_ipc_get_reply(sdev); + cnl_ipc_host_done(sdev); snd_sof_ipc_reply(sdev, data->primary); spin_unlock_irq(&sdev->ipc_lock); @@ -88,10 +89,10 @@ irqreturn_t cnl_ipc4_irq_thread(int irq, void *context) sdev->ipc->msg.rx_data = ¬ification_data; snd_sof_ipc_msgs_rx(sdev); sdev->ipc->msg.rx_data = NULL; - } - /* Let DSP know that we have finished processing the message */ - cnl_ipc_host_done(sdev); + /* Let DSP know that we have finished processing the message */ + cnl_ipc_host_done(sdev); + } ipc_irq = true; } diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c index b4668c969a298..a7c454e039528 100644 --- a/sound/soc/sof/intel/hda-ipc.c +++ b/sound/soc/sof/intel/hda-ipc.c @@ -169,6 +169,7 @@ irqreturn_t hda_dsp_ipc4_irq_thread(int irq, void *context) spin_lock_irq(&sdev->ipc_lock); snd_sof_ipc_get_reply(sdev); + hda_dsp_ipc_host_done(sdev); snd_sof_ipc_reply(sdev, data->primary); spin_unlock_irq(&sdev->ipc_lock); @@ -185,10 +186,10 @@ irqreturn_t hda_dsp_ipc4_irq_thread(int irq, void *context) sdev->ipc->msg.rx_data = ¬ification_data; snd_sof_ipc_msgs_rx(sdev); sdev->ipc->msg.rx_data = NULL; - } - /* Let DSP know that we have finished processing the message */ - hda_dsp_ipc_host_done(sdev); + /* Let DSP know that we have finished processing the message */ + hda_dsp_ipc_host_done(sdev); + } ipc_irq = true; } diff --git a/sound/soc/sof/intel/mtl.c b/sound/soc/sof/intel/mtl.c index 9d1bc74395e70..054b9ab721ffc 100644 --- a/sound/soc/sof/intel/mtl.c +++ b/sound/soc/sof/intel/mtl.c @@ -540,6 +540,7 @@ static irqreturn_t mtl_ipc_irq_thread(int irq, void *context) spin_lock_irq(&sdev->ipc_lock); snd_sof_ipc_get_reply(sdev); + mtl_ipc_host_done(sdev); snd_sof_ipc_reply(sdev, data->primary); spin_unlock_irq(&sdev->ipc_lock); @@ -556,9 +557,9 @@ static irqreturn_t mtl_ipc_irq_thread(int irq, void *context) sdev->ipc->msg.rx_data = ¬ification_data; snd_sof_ipc_msgs_rx(sdev); sdev->ipc->msg.rx_data = NULL; - } - mtl_ipc_host_done(sdev); + mtl_ipc_host_done(sdev); + } ipc_irq = true; }