linux-kernel - [PATCH] Revert "regulator: qcom-rpmh: Revert "regulator: qcom-rpmh: Use PROBE_FORCE

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Date:   Mon, 15 May 2023 20:23:23 +0530
From:   Amit Pundir <amit.pundir@...aro.org>
To:     Bjorn Andersson <andersson@...nel.org>,
        Douglas Anderson <dianders@...omium.org>
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Caleb Connolly <caleb.connolly@...aro.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH] Revert "regulator: qcom-rpmh: Revert "regulator: qcom-rpmh: Use PROBE_FORCE_SYNCHRONOUS""

This reverts commit ad44ac082fdff7ee57fe125432f7d9d7cb610a23.

This patch restores the synchronous probing for
qcom-rpmh-regulator because asynchronous probing broke
Dragonboard 845c (SDM845) running AOSP. UFSHC fail to
initialize properly and DB845c fails to boot regardless
of "rootwait" bootarg being present or not
https://bugs.linaro.org/show_bug.cgi?id=5975.

Signed-off-by: Amit Pundir <amit.pundir@...aro.org>
---
 drivers/regulator/qcom-rpmh-regulator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/qcom-rpmh-regulator.c b/drivers/regulator/qcom-rpmh-regulator.c
index b0a58c62b1e2..30659922b0aa 100644
--- a/drivers/regulator/qcom-rpmh-regulator.c
+++ b/drivers/regulator/qcom-rpmh-regulator.c
@@ -1517,7 +1517,7 @@ MODULE_DEVICE_TABLE(of, rpmh_regulator_match_table);
 static struct platform_driver rpmh_regulator_driver = {
 	.driver = {
 		.name = "qcom-rpmh-regulator",
-		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+		.probe_type = PROBE_FORCE_SYNCHRONOUS,
 		.of_match_table	= of_match_ptr(rpmh_regulator_match_table),
 	},
 	.probe = rpmh_regulator_probe,
-- 
2.25.1