linux-kernel - [PATCH v2] soundwire: qcom: remove redundant wait for completion

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Date:   Fri, 25 Feb 2022 20:14:17 +0530
From:   Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
To:     <agross@...nel.org>, <bjorn.andersson@...aro.org>,
        <lgirdwood@...il.com>, <broonie@...nel.org>, <robh+dt@...nel.org>,
        <quic_plai@...cinc.com>, <bgoswami@...eaurora.org>,
        <perex@...ex.cz>, <tiwai@...e.com>,
        <srinivas.kandagatla@...aro.org>, <rohitkr@...eaurora.org>,
        <linux-arm-msm@...r.kernel.org>, <alsa-devel@...a-project.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <swboyd@...omium.org>, <judyhsiao@...omium.org>,
        <yung-chuan.liao@...ux.intel.com>,
        <pierre-louis.bossart@...ux.intel.com>, <sanyog.r.kale@...el.com>
CC:     Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>,
        "Venkata Prasad Potturu" <quic_potturu@...cinc.com>
Subject: [PATCH v2] soundwire: qcom: remove redundant wait for completion

Remove wait_for_completion_timeout from soundwire probe as it seems
unnecessary and device enumeration is anyway not happening here,
hence this api is blocking till it completes max wait time.
Also, as device enumeration event is dependent on wcd938x probe to be
completed, its of no use waiting here.
Waiting here increasing the boot time almost 4 seconds and impacting
other modules like touch screen.

Fixes: 06dd96738d618 ("soundwire: qcom: wait for enumeration to be complete in probe")

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
Co-developed-by: Venkata Prasad Potturu <quic_potturu@...cinc.com>
Signed-off-by: Venkata Prasad Potturu <quic_potturu@...cinc.com>
---
 drivers/soundwire/qcom.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 5481341..9a32a24 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -1309,8 +1309,6 @@ static int qcom_swrm_probe(struct platform_device *pdev)
 	}
 
 	qcom_swrm_init(ctrl);
-	wait_for_completion_timeout(&ctrl->enumeration,
-				    msecs_to_jiffies(TIMEOUT_MS));
 	ret = qcom_swrm_register_dais(ctrl);
 	if (ret)
 		goto err_master_add;
-- 
2.7.4