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From:   Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To:     vkoul@kernel.org
Cc:     andersson@kernel.org, yung-chuan.liao@linux.intel.com,
        pierre-louis.bossart@linux.intel.com, sanyog.r.kale@intel.com,
        linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org,
        linux-kernel@vger.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH v2 1/4] soundwire: qcom: update status correctly with mask
Date:   Thu, 25 May 2023 14:38:09 +0100
Message-Id: <20230525133812.30841-2-srinivas.kandagatla@linaro.org>
In-Reply-To: <20230525133812.30841-1-srinivas.kandagatla@linaro.org>
References: <20230525133812.30841-1-srinivas.kandagatla@linaro.org>
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SoundWire device status can be incorrectly updated without
proper mask, fix this by adding a mask before updating the status.

Fixes: c7d49c76d1d5 ("soundwire: qcom: add support to new interrupts")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/soundwire/qcom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index aad5942e5980..9440787e924b 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -515,7 +515,7 @@ static int qcom_swrm_get_alert_slave_dev_num(struct qcom_swrm_ctrl *ctrl)
 		status = (val >> (dev_num * SWRM_MCP_SLV_STATUS_SZ));
 
 		if ((status & SWRM_MCP_SLV_STATUS_MASK) == SDW_SLAVE_ALERT) {
-			ctrl->status[dev_num] = status;
+			ctrl->status[dev_num] = status & SWRM_MCP_SLV_STATUS_MASK;
 			return dev_num;
 		}
 	}
-- 
2.21.0