linux-kernel - [PATCH 2/2] soundwire: amd: add check for status update registers

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Message-ID: <20250620102617.73437-2-Vijendar.Mukunda@amd.com>
Date: Fri, 20 Jun 2025 15:55:20 +0530
From: Vijendar Mukunda <Vijendar.Mukunda@....com>
To: <vkoul@...nel.org>
CC: <yung-chuan.liao@...ux.intel.com>, <pierre-louis.bossart@...ux.dev>,
	<Basavaraj.Hiregoudar@....com>, <Sunil-kumar.Dommati@....com>,
	<venkataprasad.potturu@....com>, <linux-sound@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Vijendar Mukunda <Vijendar.Mukunda@....com>
Subject: [PATCH 2/2] 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 <Vijendar.Mukunda@....com>
---
 drivers/soundwire/amd_manager.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/soundwire/amd_manager.c b/drivers/soundwire/amd_manager.c
index 732c3e9cdd9c..5a7468e33012 100644
--- a/drivers/soundwire/amd_manager.c
+++ b/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)
-- 
2.45.2