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From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To:     Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Vinod Koul <vkoul@kernel.org>,
        Bard Liao <yung-chuan.liao@linux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
        Sanyog Kale <sanyog.r.kale@intel.com>,
        linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org,
        linux-kernel@vger.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: [PATCH 2/2] soundwire: qcom: move sconfig in qcom_swrm_stream_alloc_ports() out of critical section
Date:   Mon, 20 Nov 2023 20:07:40 +0100
Message-Id: <20231120190740.339350-2-krzysztof.kozlowski@linaro.org>
In-Reply-To: <20231120190740.339350-1-krzysztof.kozlowski@linaro.org>
References: <20231120190740.339350-1-krzysztof.kozlowski@linaro.org>
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Setting members of local variable "sconfig" in
qcom_swrm_stream_alloc_ports() does not depend on any earlier code in
this function, so can be moved up before the critical section.  This
makes the code a bit easier to follow because critical section is
smaller.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/soundwire/qcom.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 754870a4a047..e9a52c1bd359 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -1160,6 +1160,17 @@ static int qcom_swrm_stream_alloc_ports(struct qcom_swrm_ctrl *ctrl,
 	int maxport, pn, nports = 0, ret = 0;
 	unsigned int m_port;
 
+	if (direction == SNDRV_PCM_STREAM_CAPTURE)
+		sconfig.direction = SDW_DATA_DIR_TX;
+	else
+		sconfig.direction = SDW_DATA_DIR_RX;
+
+	/* hw parameters wil be ignored as we only support PDM */
+	sconfig.ch_count = 1;
+	sconfig.frame_rate = params_rate(params);
+	sconfig.type = stream->type;
+	sconfig.bps = 1;
+
 	mutex_lock(&ctrl->port_lock);
 	list_for_each_entry(m_rt, &stream->master_list, stream_node) {
 		if (m_rt->direction == SDW_DATA_DIR_RX) {
@@ -1193,16 +1204,6 @@ static int qcom_swrm_stream_alloc_ports(struct qcom_swrm_ctrl *ctrl,
 		}
 	}
 
-	if (direction == SNDRV_PCM_STREAM_CAPTURE)
-		sconfig.direction = SDW_DATA_DIR_TX;
-	else
-		sconfig.direction = SDW_DATA_DIR_RX;
-
-	/* hw parameters wil be ignored as we only support PDM */
-	sconfig.ch_count = 1;
-	sconfig.frame_rate = params_rate(params);
-	sconfig.type = stream->type;
-	sconfig.bps = 1;
 	sdw_stream_add_master(&ctrl->bus, &sconfig, pconfig,
 			      nports, stream);
 out:
-- 
2.34.1