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From:   Hector Martin <marcan@marcan.st>
To:     linux-arm-kernel@lists.infradead.org
Cc:     Hector Martin <marcan@marcan.st>,
        Alyssa Rosenzweig <alyssa@rosenzweig.io>,
        Sven Peter <sven@svenpeter.dev>, Marc Zyngier <maz@kernel.org>,
        Mark Kettenis <mark.kettenis@xs4all.nl>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>,
        Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Kevin Hilman <khilman@kernel.org>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
        linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH 4/9] opp: core: Don't warn if required OPP device does not exist
Date:   Tue, 12 Oct 2021 01:57:02 +0900
Message-Id: <20211011165707.138157-5-marcan@marcan.st>
In-Reply-To: <20211011165707.138157-1-marcan@marcan.st>
References: <20211011165707.138157-1-marcan@marcan.st>
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When required-opps is used in CPU OPP tables, there is no parent power
domain to drive it. Squelch this error, to allow a clock driver to
handle this directly instead.

Signed-off-by: Hector Martin <marcan@marcan.st>
---
 drivers/opp/core.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 04b4691a8aac..89e616721f70 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -873,12 +873,13 @@ static int _set_required_opp(struct device *dev, struct device *pd_dev,
 		return 0;
 
 	ret = dev_pm_genpd_set_performance_state(pd_dev, pstate);
-	if (ret) {
+	if (ret && ret != -ENODEV) {
 		dev_err(dev, "Failed to set performance rate of %s: %d (%d)\n",
 			dev_name(pd_dev), pstate, ret);
+		return ret;
 	}
 
-	return ret;
+	return 0;
 }
 
 /* This is only called for PM domain for now */
-- 
2.33.0