[PATCH 2/2] staging: most: dim2: fix error handling in fsl_mx6_enable

[Artem Lytkin]

Address several error handling issues in fsl_mx6_enable():

- Replace IS_ERR_OR_NULL() with IS_ERR() for devm_clk_get() return
  value checks, since devm_clk_get() never returns NULL on error.

- Replace hardcoded -EFAULT returns with dev_err_probe() which both
  propagates the actual error code from devm_clk_get() and suppresses
  log messages during probe deferral.

- Remove an unnecessary string indirection in the clk_prepare_enable
  error message.

Signed-off-by: Artem Lytkin <iprintercanon@xxxxxxxxx>
---
 drivers/staging/most/dim2/dim2.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/most/dim2/dim2.c b/drivers/staging/most/dim2/dim2.c
index 1f07c37df..15eaf4ff8 100644
--- a/drivers/staging/most/dim2/dim2.c
+++ b/drivers/staging/most/dim2/dim2.c
@@ -923,24 +923,23 @@ static int fsl_mx6_enable(struct platform_device *pdev)
 	int ret;
 
 	dev->clk = devm_clk_get(&pdev->dev, "mlb");
-	if (IS_ERR_OR_NULL(dev->clk)) {
-		dev_err(&pdev->dev, "unable to get mlb clock\n");
-		return -EFAULT;
-	}
+	if (IS_ERR(dev->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(dev->clk),
+				     "unable to get mlb clock\n");
 
 	ret = clk_prepare_enable(dev->clk);
 	if (ret) {
-		dev_err(&pdev->dev, "%s\n", "clk_prepare_enable failed");
+		dev_err(&pdev->dev, "clk_prepare_enable failed\n");
 		return ret;
 	}
 
 	if (dev->clk_speed >= CLK_2048FS) {
 		/* enable pll */
 		dev->clk_pll = devm_clk_get(&pdev->dev, "pll8_mlb");
-		if (IS_ERR_OR_NULL(dev->clk_pll)) {
-			dev_err(&pdev->dev, "unable to get mlb pll clock\n");
+		if (IS_ERR(dev->clk_pll)) {
 			clk_disable_unprepare(dev->clk);
-			return -EFAULT;
+			return dev_err_probe(&pdev->dev, PTR_ERR(dev->clk_pll),
+					     "unable to get mlb pll clock\n");
 		}
 
 		writel(0x888, dev->io_base + 0x38);
-- 
2.43.0