| Message ID | 20230203123254.1898794-1-Vsujithkumar.Reddy@amd.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 2e7c6652f9b86c01cbd4e988057a746a3a461969 |
| Headers | show |
| Series | ASoC: SOF: amd: Fix for handling spurious interrupts from DSP | expand |
On Fri, 03 Feb 2023 18:02:52 +0530, V sujith kumar Reddy wrote: > As interrupts are Level-triggered,unless and until we deassert the register > the interrupts are generated which causes spurious interrupts unhandled. > > Now we deasserted the interrupt at top half which solved the below > "nobody cared" warning. > > warning reported in dmesg: > irq 80: nobody cared (try booting with the "irqpoll" option) > CPU: 5 PID: 2735 Comm: irq/80-AudioDSP > Not tainted 5.15.86-15817-g4c19f3e06d49 #1 1bd3fd932cf58caacc95b0504d6ea1e3eab22289 > Hardware name: Google Skyrim/Skyrim, BIOS Google_Skyrim.15303.0.0 01/03/2023 > Call Trace: > <IRQ> > dump_stack_lvl+0x69/0x97 > __report_bad_irq+0x3a/0xae > note_interrupt+0x1a9/0x1e3 > handle_irq_event_percpu+0x4b/0x6e > handle_irq_event+0x36/0x5b > handle_fasteoi_irq+0xae/0x171 > __common_interrupt+0x48/0xc4 > </IRQ> > > [...] Applied to https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next Thanks! [1/1] ASoC: SOF: amd: Fix for handling spurious interrupts from DSP commit: 2e7c6652f9b86c01cbd4e988057a746a3a461969 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark
diff --git a/sound/soc/sof/amd/acp.c b/sound/soc/sof/amd/acp.c index 6bd2888fbb66..d5ccd4d09278 100644 --- a/sound/soc/sof/amd/acp.c +++ b/sound/soc/sof/amd/acp.c @@ -318,7 +318,6 @@ static irqreturn_t acp_irq_thread(int irq, void *context) { struct snd_sof_dev *sdev = context; const struct sof_amd_acp_desc *desc = get_chip_info(sdev->pdata); - unsigned int base = desc->dsp_intr_base; unsigned int val, count = ACP_HW_SEM_RETRY_COUNT; val = snd_sof_dsp_read(sdev, ACP_DSP_BAR, desc->ext_intr_stat); @@ -328,28 +327,20 @@ static irqreturn_t acp_irq_thread(int irq, void *context) return IRQ_HANDLED; } - val = snd_sof_dsp_read(sdev, ACP_DSP_BAR, base + DSP_SW_INTR_STAT_OFFSET); - if (val & ACP_DSP_TO_HOST_IRQ) { - while (snd_sof_dsp_read(sdev, ACP_DSP_BAR, desc->hw_semaphore_offset)) { - /* Wait until acquired HW Semaphore lock or timeout */ - count--; - if (!count) { - dev_err(sdev->dev, "%s: Failed to acquire HW lock\n", __func__); - return IRQ_NONE; - } + while (snd_sof_dsp_read(sdev, ACP_DSP_BAR, desc->hw_semaphore_offset)) { + /* Wait until acquired HW Semaphore lock or timeout */ + count--; + if (!count) { + dev_err(sdev->dev, "%s: Failed to acquire HW lock\n", __func__); + return IRQ_NONE; } - - sof_ops(sdev)->irq_thread(irq, sdev); - val |= ACP_DSP_TO_HOST_IRQ; - snd_sof_dsp_write(sdev, ACP_DSP_BAR, base + DSP_SW_INTR_STAT_OFFSET, val); - - /* Unlock or Release HW Semaphore */ - snd_sof_dsp_write(sdev, ACP_DSP_BAR, desc->hw_semaphore_offset, 0x0); - - return IRQ_HANDLED; } - return IRQ_NONE; + sof_ops(sdev)->irq_thread(irq, sdev); + /* Unlock or Release HW Semaphore */ + snd_sof_dsp_write(sdev, ACP_DSP_BAR, desc->hw_semaphore_offset, 0x0); + + return IRQ_HANDLED; }; static irqreturn_t acp_irq_handler(int irq, void *dev_id) @@ -360,8 +351,11 @@ static irqreturn_t acp_irq_handler(int irq, void *dev_id) unsigned int val; val = snd_sof_dsp_read(sdev, ACP_DSP_BAR, base + DSP_SW_INTR_STAT_OFFSET); - if (val) + if (val) { + val |= ACP_DSP_TO_HOST_IRQ; + snd_sof_dsp_write(sdev, ACP_DSP_BAR, base + DSP_SW_INTR_STAT_OFFSET, val); return IRQ_WAKE_THREAD; + } return IRQ_NONE; }
As interrupts are Level-triggered,unless and until we deassert the register the interrupts are generated which causes spurious interrupts unhandled. Now we deasserted the interrupt at top half which solved the below "nobody cared" warning. warning reported in dmesg: irq 80: nobody cared (try booting with the "irqpoll" option) CPU: 5 PID: 2735 Comm: irq/80-AudioDSP Not tainted 5.15.86-15817-g4c19f3e06d49 #1 1bd3fd932cf58caacc95b0504d6ea1e3eab22289 Hardware name: Google Skyrim/Skyrim, BIOS Google_Skyrim.15303.0.0 01/03/2023 Call Trace: <IRQ> dump_stack_lvl+0x69/0x97 __report_bad_irq+0x3a/0xae note_interrupt+0x1a9/0x1e3 handle_irq_event_percpu+0x4b/0x6e handle_irq_event+0x36/0x5b handle_fasteoi_irq+0xae/0x171 __common_interrupt+0x48/0xc4 </IRQ> handlers: acp_irq_handler [snd_sof_amd_acp] threaded [<000000007e089f34>] acp_irq_thread [snd_sof_amd_acp] Disabling IRQ #80 Signed-off-by: V sujith kumar Reddy <Vsujithkumar.Reddy@amd.com> --- sound/soc/sof/amd/acp.c | 36 +++++++++++++++--------------------- 1 file changed, 15 insertions(+), 21 deletions(-)