netdev - [PATCH V2 1/2] can: xilinx_can: skip error message on deferred probe

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Message-Id: <1575291731-11022-2-git-send-email-srinivas.neeli@xilinx.com>
Date:   Mon,  2 Dec 2019 18:32:10 +0530
From:   Srinivas Neeli <srinivas.neeli@...inx.com>
To:     wg@...ndegger.com, mkl@...gutronix.de, davem@...emloft.net,
        michal.simek@...inx.com, appanad@...inx.com
Cc:     linux-can@...r.kernel.org, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        git@...inx.com, nagasure@...inx.com,
        Venkatesh Yadav Abbarapu <venkatesh.abbarapu@...inx.com>,
        Srinivas Neeli <srinivas.neeli@...inx.com>
Subject: [PATCH V2 1/2] can: xilinx_can: skip error message on deferred probe

From: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@...inx.com>

When can bus clock is provided from the clock wizard, clock wizard driver
may not be available when can driver probes resulting to the error
message "bus clock not found error".

As this error message is not very useful to the end user, skip printing
in the case of deferred probe.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@...inx.com>
Signed-off-by: Srinivas Neeli <srinivas.neeli@...inx.com>
Signed-off-by: Michal Simek <michal.simek@...inx.com>
Reviewed-by: Appana Durga Kedareswara Rao <appana.durga.rao@...inx.com>
---
 drivers/net/can/xilinx_can.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
index 4a96e2dd7d77..c5f05b994435 100644
--- a/drivers/net/can/xilinx_can.c
+++ b/drivers/net/can/xilinx_can.c
@@ -1772,7 +1772,8 @@ static int xcan_probe(struct platform_device *pdev)
 
 	priv->bus_clk = devm_clk_get(&pdev->dev, devtype->bus_clk_name);
 	if (IS_ERR(priv->bus_clk)) {
-		dev_err(&pdev->dev, "bus clock not found\n");
+		if (PTR_ERR(priv->bus_clk) != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "bus clock not found\n");
 		ret = PTR_ERR(priv->bus_clk);
 		goto err_free;
 	}
-- 
2.7.4