linux-kernel - [PATCH -next 4/4] dmaengine: xilinx_dma: Remove clk

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Date:   Thu, 26 Sep 2019 16:21:00 +0530
From:   Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>
To:     vkoul@...nel.org, dan.j.williams@...el.com,
        michal.simek@...inx.com, nick.graumann@...il.com,
        andrea.merello@...il.com, appana.durga.rao@...inx.com,
        mcgrof@...nel.org
Cc:     dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
        Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>
Subject: [PATCH -next 4/4] dmaengine: xilinx_dma: Remove clk_get error message for probe defer

In dma probe, the driver checks for devm_clk_get return and print error
message in the failing case. However for -EPROBE_DEFER this message is
confusing so avoid it.

Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>
Signed-off-by: Michal Simek <michal.simek@...inx.com>
---
 drivers/dma/xilinx/xilinx_dma.c |   19 ++++++++++++++-----
 1 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index bc9979d..440f2ce 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -2194,7 +2194,9 @@ static int axidma_clk_init(struct platform_device *pdev, struct clk **axi_clk,
 	*axi_clk = devm_clk_get(&pdev->dev, "s_axi_lite_aclk");
 	if (IS_ERR(*axi_clk)) {
 		err = PTR_ERR(*axi_clk);
-		dev_err(&pdev->dev, "failed to get axi_aclk (%d)\n", err);
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to get axi_aclk (%d)\n",
+				err);
 		return err;
 	}
 
@@ -2259,14 +2261,18 @@ static int axicdma_clk_init(struct platform_device *pdev, struct clk **axi_clk,
 	*axi_clk = devm_clk_get(&pdev->dev, "s_axi_lite_aclk");
 	if (IS_ERR(*axi_clk)) {
 		err = PTR_ERR(*axi_clk);
-		dev_err(&pdev->dev, "failed to get axi_clk (%d)\n", err);
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to get axi_clk (%d)\n",
+				err);
 		return err;
 	}
 
 	*dev_clk = devm_clk_get(&pdev->dev, "m_axi_aclk");
 	if (IS_ERR(*dev_clk)) {
 		err = PTR_ERR(*dev_clk);
-		dev_err(&pdev->dev, "failed to get dev_clk (%d)\n", err);
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to get dev_clk (%d)\n",
+				err);
 		return err;
 	}
 
@@ -2299,7 +2305,9 @@ static int axivdma_clk_init(struct platform_device *pdev, struct clk **axi_clk,
 	*axi_clk = devm_clk_get(&pdev->dev, "s_axi_lite_aclk");
 	if (IS_ERR(*axi_clk)) {
 		err = PTR_ERR(*axi_clk);
-		dev_err(&pdev->dev, "failed to get axi_aclk (%d)\n", err);
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to get axi_aclk (%d)\n",
+				err);
 		return err;
 	}
 
@@ -2321,7 +2329,8 @@ static int axivdma_clk_init(struct platform_device *pdev, struct clk **axi_clk,
 
 	err = clk_prepare_enable(*axi_clk);
 	if (err) {
-		dev_err(&pdev->dev, "failed to enable axi_clk (%d)\n", err);
+		dev_err(&pdev->dev, "failed to enable axi_clk (%d)\n",
+			err);
 		return err;
 	}
 
-- 
1.7.1