[PATCH v2 1/2] pinctrl: pinctrl-pic32: Fix resource leak

[Ethan Tidmore]

Fix three possible resource leaks by using the devres version of
clk_prepare_enable(). Also, update error message accordingly.

Detected by Smatch:
drivers/pinctrl/pinctrl-pic32.c:2211 pic32_pinctrl_probe() warn:
'pctl->clk' from clk_prepare_enable() not released on lines: 2208.

drivers/pinctrl/pinctrl-pic32.c:2274 pic32_gpio_probe() warn:
'bank->clk' from clk_prepare_enable() not released on lines: 2264,2272.

Fixes: 2ba384e6c3810 ("pinctrl: pinctrl-pic32: Add PIC32 pin control driver")
Signed-off-by: Ethan Tidmore <ethantidmore06@xxxxxxxxx>
---
v2:
- Use devres instead of manual cleanup.

 drivers/pinctrl/pinctrl-pic32.c | 20 ++++----------------
 1 file changed, 4 insertions(+), 16 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-pic32.c b/drivers/pinctrl/pinctrl-pic32.c
index eb438c9d9667..d185fe48dc0d 100644
--- a/drivers/pinctrl/pinctrl-pic32.c
+++ b/drivers/pinctrl/pinctrl-pic32.c
@@ -2174,16 +2174,10 @@ static int pic32_pinctrl_probe(struct platform_device *pdev)
 	if (IS_ERR(pctl->reg_base))
 		return PTR_ERR(pctl->reg_base);
 
-	pctl->clk = devm_clk_get(&pdev->dev, NULL);
+	pctl->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(pctl->clk)) {
 		ret = PTR_ERR(pctl->clk);
-		dev_err(&pdev->dev, "clk get failed\n");
-		return ret;
-	}
-
-	ret = clk_prepare_enable(pctl->clk);
-	if (ret) {
-		dev_err(&pdev->dev, "clk enable failed\n");
+		dev_err(&pdev->dev, "Failed to get and enable clock\n");
 		return ret;
 	}
 
@@ -2239,16 +2233,10 @@ static int pic32_gpio_probe(struct platform_device *pdev)
 	if (irq < 0)
 		return irq;
 
-	bank->clk = devm_clk_get(&pdev->dev, NULL);
+	bank->clk = devm_clk_get_enabled(&pdev->dev, NULL);
 	if (IS_ERR(bank->clk)) {
 		ret = PTR_ERR(bank->clk);
-		dev_err(&pdev->dev, "clk get failed\n");
-		return ret;
-	}
-
-	ret = clk_prepare_enable(bank->clk);
-	if (ret) {
-		dev_err(&pdev->dev, "clk enable failed\n");
+		dev_err(&pdev->dev, "Failed to get and enable clock\n");
 		return ret;
 	}
 
-- 
2.53.0