linux-kernel - [PATCH] i2c: i2c-mux-gpio: Change log level to debug for probe deferrals

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Date:	Wed, 25 Mar 2015 18:43:51 +0100
From:	Ioan Nicu <ioan.nicu.ext@....com>
To:	Peter Korsgaard <peter.korsgaard@...co.com>,
	Wolfram Sang <wsa@...-dreams.de>, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	Alexander Sverdlin <alexander.sverdlin@...ia.com>,
	Mathias Rulf <mathias.rulf@...ia.com>
Subject: [PATCH] i2c: i2c-mux-gpio: Change log level to debug for probe
 deferrals

Probe deferral is not an error case. It happens only when
the necessary dependencies are not there yet.

The driver core is already printing a message when a driver
requests probe deferral, so this can be traced in the logs
without these error prints.

This patch changes the error messages from these deferral cases
to debug messages.

Signed-off-by: Ionut Nicu <ioan.nicu.ext@...ia.com>
---
 drivers/i2c/muxes/i2c-mux-gpio.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
index f5798eb..9f1cfca 100644
--- a/drivers/i2c/muxes/i2c-mux-gpio.c
+++ b/drivers/i2c/muxes/i2c-mux-gpio.c
@@ -77,7 +77,7 @@ static int i2c_mux_gpio_probe_dt(struct gpiomux *mux,
        }
        adapter = of_find_i2c_adapter_by_node(adapter_np);
        if (!adapter) {
-               dev_err(&pdev->dev, "Cannot find parent bus\n");
+               dev_dbg(&pdev->dev, "Cannot find parent bus\n");
                return -EPROBE_DEFER;
        }
        mux->data.parent = i2c_adapter_id(adapter);
@@ -178,7 +178,7 @@ static int i2c_mux_gpio_probe(struct platform_device *pdev)
 
        parent = i2c_get_adapter(mux->data.parent);
        if (!parent) {
-               dev_err(&pdev->dev, "Parent adapter (%d) not found\n",
+               dev_dbg(&pdev->dev, "Parent adapter (%d) not found\n",
                        mux->data.parent);
                return -EPROBE_DEFER;
        }
-- 
1.7.1

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