[PATCH 3/4] ASoC: SOF: amd: guard SDW IRQ work scheduling with interrupt_enabled flag

[Vijendar Mukunda]

acp_irq_handler() in sound/soc/sof/amd/acp.c called schedule_work()
for the SoundWire manager workqueue guarded only by a NULL check on
amd_manager, the same gap fixed in the PS platform IRQ handler.

Add the interrupt_enabled check so that an in-flight IRQ arriving while
the SoundWire manager is being torn down does not queue new work after
amd_disable_sdw_interrupts() has cleared the flag.

Reported-by: Lee Jones <lee@xxxxxxxxxx>
Closes: https://sashiko.dev/#/bug/linux-ab458b2e-f505-4a41-8238-a93ceb5d9c77
Fixes: 96eb81851012 ("ASoC: SOF: amd: add interrupt handling for SoundWire manager devices")
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@xxxxxxx>
---
 sound/soc/sof/amd/acp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sof/amd/acp.c b/sound/soc/sof/amd/acp.c
index 623e016f38b8..5c4eab0be497 100644
--- a/sound/soc/sof/amd/acp.c
+++ b/sound/soc/sof/amd/acp.c
@@ -586,7 +586,7 @@ static irqreturn_t acp_irq_handler(int irq, void *dev_id)
 		snd_sof_dsp_write(sdev, ACP_DSP_BAR, desc->ext_intr_stat, ACP_SDW0_IRQ_MASK);
 		if (adata->sdw) {
 			amd_manager = dev_get_drvdata(&adata->sdw->pdev[0]->dev);
-			if (amd_manager)
+			if (amd_manager && amd_manager->interrupt_enabled)
 				schedule_work(&amd_manager->amd_sdw_irq_thread);
 		}
 		irq_flag = 1;
@@ -618,7 +618,7 @@ static irqreturn_t acp_irq_handler(int irq, void *dev_id)
 					  ACP_SDW1_IRQ_MASK);
 			if (adata->sdw) {
 				amd_manager = dev_get_drvdata(&adata->sdw->pdev[1]->dev);
-				if (amd_manager)
+				if (amd_manager && amd_manager->interrupt_enabled)
 					schedule_work(&amd_manager->amd_sdw_irq_thread);
 			}
 			irq_flag = 1;
-- 
2.53.0