soundwire: amd: add check for status update registers

Add check to proceed handling SoundWire interrupts when valid
status is reported in any one of the status registers.

Signed-off-by: Vijendar Mukunda <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: vijendarmukunda

drivers/soundwire/amd_manager.c

@@ -931,6 +931,9 @@ static void amd_sdw_irq_thread(struct work_struct *work)
 
 	status_change_8to11 = readl(amd_manager->mmio + ACP_SW_STATE_CHANGE_STATUS_8TO11);
 	status_change_0to7 = readl(amd_manager->mmio + ACP_SW_STATE_CHANGE_STATUS_0TO7);
+	if (!status_change_0to7 && !status_change_8to11)
+		return;
+
 	dev_dbg(amd_manager->dev, "[SDW%d] SDW INT: 0to7=0x%x, 8to11=0x%x\n",
 		amd_manager->instance, status_change_0to7, status_change_8to11);
 	if (status_change_8to11 & AMD_SDW_WAKE_STAT_MASK)