From 6b0d35891c835319291f2c3b459e666fc809f831 Mon Sep 17 00:00:00 2001
From: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@xilinx.com>
Date: Mon, 12 Aug 2019 15:36:42 +0530
Subject: [PATCH] can: xilinx_can: xcan_probe(): skip error message on deferred probe
Git-commit: 6b0d35891c835319291f2c3b459e666fc809f831
Patch-mainline: v5.4-rc1
References: bsc#1051510

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

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

Fixes: b1201e44 ("can: xilinx CAN controller support")
Signed-off-by: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com>
Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 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 c7d043a40837..161bb5e1f378 100644
--- a/drivers/net/can/xilinx_can.c
+++ b/drivers/net/can/xilinx_can.c
@@ -1780,7 +1780,8 @@ static int xcan_probe(struct platform_device *pdev)
 	/* Getting the CAN can_clk info */
 	priv->can_clk = devm_clk_get(&pdev->dev, "can_clk");
 	if (IS_ERR(priv->can_clk)) {
-		dev_err(&pdev->dev, "Device clock not found.\n");
+		if (PTR_ERR(priv->can_clk) != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Device clock not found.\n");
 		ret = PTR_ERR(priv->can_clk);
 		goto err_free;
 	}
-- 
2.16.4