[PATCH v2 2/2] Input: st-keyscan: Improve probe error handling

[phucduc.bui@gmail.com]

From: bui duc phuc <phucduc.bui@gmail.com>

Use dev_err_probe() for devm_clk_get() so deferred probe errors are
handled correctly.
Drop the redundant error message after devm_request_irq(), since the
helper already reports request failures internally.
Return the original error from platform_get_irq() instead of replacing
it with -EINVAL.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---

Changes in v2 : 
 -Return the original error from platform_get_irq() instead of replacing
  it with -EINVAL.

 drivers/input/keyboard/st-keyscan.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/input/keyboard/st-keyscan.c b/drivers/input/keyboard/st-keyscan.c
index e53ef4c670e4..8e9bac339dc4 100644
--- a/drivers/input/keyboard/st-keyscan.c
+++ b/drivers/input/keyboard/st-keyscan.c
@@ -173,10 +173,9 @@ static int keyscan_probe(struct platform_device *pdev)
 		return PTR_ERR(keypad_data->base);
 
 	keypad_data->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(keypad_data->clk)) {
-		dev_err(&pdev->dev, "cannot get clock\n");
-		return PTR_ERR(keypad_data->clk);
-	}
+	if (IS_ERR(keypad_data->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(keypad_data->clk),
+				     "cannot get clock\n");
 
 	error = clk_enable(keypad_data->clk);
 	if (error) {
@@ -188,14 +187,12 @@ static int keyscan_probe(struct platform_device *pdev)
 
 	keypad_data->irq = platform_get_irq(pdev, 0);
 	if (keypad_data->irq < 0)
-		return -EINVAL;
+		return keypad_data->irq;
 
 	error = devm_request_irq(&pdev->dev, keypad_data->irq, keyscan_isr, 0,
 				 pdev->name, keypad_data);
-	if (error) {
-		dev_err(&pdev->dev, "failed to request IRQ\n");
+	if (error)
 		return error;
-	}
 
 	error = input_register_device(input_dev);
 	if (error) {
-- 
2.43.0