dmaengine: stm32: use to_platform_device()

Use to_platform_device() instead of open-coding it.

Signed-off-by: Weitao Hou <houweitaoo@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/dma/stm32-dmamux.c b/drivers/dma/stm32-dmamux.c
index a67119199c45..63af24d4c834 100644
--- a/drivers/dma/stm32-dmamux.c
+++ b/drivers/dma/stm32-dmamux.c
@@ -306,8 +306,7 @@ static int stm32_dmamux_probe(struct platform_device *pdev)
 #ifdef CONFIG_PM
 static int stm32_dmamux_runtime_suspend(struct device *dev)
 {
-        struct platform_device *pdev =
-                container_of(dev, struct platform_device, dev);
+        struct platform_device *pdev = to_platform_device(dev);
         struct stm32_dmamux_data *stm32_dmamux = platform_get_drvdata(pdev);
 
         clk_disable_unprepare(stm32_dmamux->clk);
@@ -317,8 +316,7 @@ static int stm32_dmamux_runtime_suspend(struct device *dev)
 
 static int stm32_dmamux_runtime_resume(struct device *dev)
 {
-        struct platform_device *pdev =
-                container_of(dev, struct platform_device, dev);
+        struct platform_device *pdev = to_platform_device(dev);
         struct stm32_dmamux_data *stm32_dmamux = platform_get_drvdata(pdev);
         int ret;