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From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	Georgi Djakov <georgi.djakov@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Peter De Schrijver <pdeschrijver@nvidia.com>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Chanwoo Choi <cw00.choi@samsung.com>,
	Mikko Perttunen <cyndis@kapsi.fi>
Cc: "Artur Świgoń" <a.swigon@samsung.com>,
	linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	devicetree@vger.kernel.org
Subject: [PATCH v3 10/39] PM / devfreq: tegra20: Silence deferred probe error
Date: Sun,  7 Jun 2020 21:55:01 +0300	[thread overview]
Message-ID: <20200607185530.18113-11-digetx@gmail.com> (raw)
In-Reply-To: <20200607185530.18113-1-digetx@gmail.com>

Tegra EMC driver was turned into a regular kernel driver, it also could
be compiled as a loadable kernel module now. Hence EMC clock isn't
guaranteed to be available and clk_get("emc") may return -EPROBE_DEFER and
there is no good reason to spam KMSG with a error about missing EMC clock
in this case, so let's silence the deferred probe error.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/devfreq/tegra20-devfreq.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/devfreq/tegra20-devfreq.c b/drivers/devfreq/tegra20-devfreq.c
index ff82bac9ee4e..6469dc69c5e0 100644
--- a/drivers/devfreq/tegra20-devfreq.c
+++ b/drivers/devfreq/tegra20-devfreq.c
@@ -141,9 +141,11 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
 
 	/* EMC is a system-critical clock that is always enabled */
 	tegra->emc_clock = devm_clk_get(&pdev->dev, "emc");
-	if (IS_ERR(tegra->emc_clock)) {
-		err = PTR_ERR(tegra->emc_clock);
-		dev_err(&pdev->dev, "failed to get emc clock: %d\n", err);
+	err = PTR_ERR_OR_ZERO(tegra->emc_clock);
+	if (err) {
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to get emc clock: %d\n",
+				err);
 		return err;
 	}
 
-- 
2.26.0


  parent reply	other threads:[~2020-06-07 18:57 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-07 18:54 [PATCH v3 00/39] Introduce memory interconnect for NVIDIA Tegra SoCs Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 01/39] clk: Export clk_hw_reparent() Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 02/39] clk: tegra: Remove Memory Controller lock Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 03/39] clk: tegra: Export Tegra20 EMC kernel symbols Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 04/39] memory: tegra20-emc: Make driver modular Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 05/39] memory: tegra30-emc: " Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 06/39] memory: tegra124-emc: " Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 07/39] memory: tegra124-emc: Use devm_platform_ioremap_resource Dmitry Osipenko
2020-06-07 18:54 ` [PATCH v3 08/39] soc/tegra: fuse: Export tegra_read_ram_code() Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 09/39] memory: tegra20-emc: Initialize MC timings Dmitry Osipenko
2020-06-07 18:55 ` Dmitry Osipenko [this message]
2020-06-07 18:55 ` [PATCH v3 11/39] PM / devfreq: tegra30: Silence deferred probe error Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 12/39] PM / devfreq: tegra20: Use MC timings for building OPP table Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 13/39] PM / devfreq: tegra30: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 14/39] PM / devfreq: tegra20: Add error messages to tegra_devfreq_target() Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 15/39] PM / devfreq: tegra30: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 16/39] PM / devfreq: tegra20: Adjust clocks conversion ratio and polling interval Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 17/39] PM / devfreq: tegra20: Relax Kconfig dependency Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 18/39] dt-bindings: memory: tegra20: mc: Document new interconnect property Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 19/39] dt-bindings: memory: tegra20: emc: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 20/39] dt-bindings: memory: tegra30: mc: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 21/39] dt-bindings: memory: tegra30: emc: " Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 22/39] dt-bindings: host1x: Document new interconnect properties Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 23/39] dt-bindings: memory: tegra20: Add memory client IDs Dmitry Osipenko
2020-06-09 20:01   ` Rob Herring
2020-06-07 18:55 ` [PATCH v3 24/39] dt-bindings: memory: tegra30: " Dmitry Osipenko
2020-06-09 20:02   ` Rob Herring
2020-06-07 18:55 ` [PATCH v3 25/39] ARM: tegra: Add interconnect properties to Tegra20 device-tree Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 26/39] ARM: tegra: Add interconnect properties to Tegra30 device-tree Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 27/39] interconnect: Relax requirement in of_icc_get_from_provider() Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 28/39] memory: tegra: Register as interconnect provider Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 29/39] memory: tegra20-emc: Use devm_platform_ioremap_resource Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 30/39] memory: tegra20-emc: Continue probing if timings are missing in device-tree Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 31/39] memory: tegra20-emc: Register as interconnect provider Dmitry Osipenko
2020-06-07 21:47   ` Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 32/39] memory: tegra20-emc: Create tegra20-devfreq device Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 33/39] memory: tegra30-emc: Continue probing if timings are missing in device-tree Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 34/39] memory: tegra30-emc: Register as interconnect provider Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 35/39] drm/tegra: dc: Support memory bandwidth management Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 36/39] drm/tegra: dc: Tune up high priority request controls for Tegra20 Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 37/39] drm/tegra: dc: Extend debug stats with total number of events Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 38/39] ARM: tegra: Enable interconnect API in tegra_defconfig Dmitry Osipenko
2020-06-07 18:55 ` [PATCH v3 39/39] ARM: multi_v7_defconfig: Enable interconnect API Dmitry Osipenko

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