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From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] clk: qcom: gdsc: WARN when failing to toggle
Date: Fri,  3 May 2019 17:17:36 -0700	[thread overview]
Message-ID: <20190504001736.8598-1-bjorn.andersson@linaro.org> (raw)

Failing to toggle a GDSC as the driver core is attaching the
power-domain to a device will cause a silent probe deferral. Provide an
explicit warning to the developer, in order to reduce the amount of time
it take to debug this.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
 drivers/clk/qcom/gdsc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c
index dd63aa36b092..6a8a4996dde3 100644
--- a/drivers/clk/qcom/gdsc.c
+++ b/drivers/clk/qcom/gdsc.c
@@ -149,7 +149,9 @@ static int gdsc_toggle_logic(struct gdsc *sc, enum gdsc_status status)
 		udelay(1);
 	}
 
-	return gdsc_poll_status(sc, status);
+	ret = gdsc_poll_status(sc, status);
+	WARN(ret, "%s status stuck at 'o%s'", sc->pd.name, status ? "ff" : "n");
+	return ret;
 }
 
 static inline int gdsc_deassert_reset(struct gdsc *sc)
-- 
2.18.0

             reply	other threads:[~2019-05-04  0:17 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-04  0:17 Bjorn Andersson [this message]
2019-05-17 19:16 ` [PATCH] clk: qcom: gdsc: WARN when failing to toggle Jeffrey Hugo
2019-05-20  8:14 ` Marc Gonzalez
2019-06-07 20:20 ` Stephen Boyd

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