[PATCH 12/20] spi: sun4i: switch to managed controller allocation

[Johan Hovold <johan@kernel.org>]

Switch to device managed controller allocation to simplify error
handling and to avoid having to take another reference during
deregistration.

Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/spi/spi-sun4i.c | 35 +++++++++++------------------------
 1 file changed, 11 insertions(+), 24 deletions(-)

diff --git a/drivers/spi/spi-sun4i.c b/drivers/spi/spi-sun4i.c
index b7fbb5270edb..d5c16392cd4d 100644
--- a/drivers/spi/spi-sun4i.c
+++ b/drivers/spi/spi-sun4i.c
@@ -434,32 +434,26 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 	struct sun4i_spi *sspi;
 	int ret = 0, irq;
 
-	host = spi_alloc_host(&pdev->dev, sizeof(struct sun4i_spi));
-	if (!host) {
-		dev_err(&pdev->dev, "Unable to allocate SPI Host\n");
+	host = devm_spi_alloc_host(&pdev->dev, sizeof(struct sun4i_spi));
+	if (!host)
 		return -ENOMEM;
-	}
 
 	platform_set_drvdata(pdev, host);
 	sspi = spi_controller_get_devdata(host);
 
 	sspi->base_addr = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(sspi->base_addr)) {
-		ret = PTR_ERR(sspi->base_addr);
-		goto err_free_host;
-	}
+	if (IS_ERR(sspi->base_addr))
+		return PTR_ERR(sspi->base_addr);
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		ret = -ENXIO;
-		goto err_free_host;
-	}
+	if (irq < 0)
+		return -ENXIO;
 
 	ret = devm_request_irq(&pdev->dev, irq, sun4i_spi_handler,
 			       0, "sun4i-spi", sspi);
 	if (ret) {
 		dev_err(&pdev->dev, "Cannot request IRQ\n");
-		goto err_free_host;
+		return ret;
 	}
 
 	sspi->host = host;
@@ -477,15 +471,13 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 	sspi->hclk = devm_clk_get(&pdev->dev, "ahb");
 	if (IS_ERR(sspi->hclk)) {
 		dev_err(&pdev->dev, "Unable to acquire AHB clock\n");
-		ret = PTR_ERR(sspi->hclk);
-		goto err_free_host;
+		return PTR_ERR(sspi->hclk);
 	}
 
 	sspi->mclk = devm_clk_get(&pdev->dev, "mod");
 	if (IS_ERR(sspi->mclk)) {
 		dev_err(&pdev->dev, "Unable to acquire module clock\n");
-		ret = PTR_ERR(sspi->mclk);
-		goto err_free_host;
+		return PTR_ERR(sspi->mclk);
 	}
 
 	init_completion(&sspi->done);
@@ -497,7 +489,7 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 	ret = sun4i_spi_runtime_resume(&pdev->dev);
 	if (ret) {
 		dev_err(&pdev->dev, "Couldn't resume the device\n");
-		goto err_free_host;
+		return ret;
 	}
 
 	pm_runtime_set_active(&pdev->dev);
@@ -515,8 +507,7 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 err_pm_disable:
 	pm_runtime_disable(&pdev->dev);
 	sun4i_spi_runtime_suspend(&pdev->dev);
-err_free_host:
-	spi_controller_put(host);
+
 	return ret;
 }
 
@@ -524,13 +515,9 @@ static void sun4i_spi_remove(struct platform_device *pdev)
 {
 	struct spi_controller *host = platform_get_drvdata(pdev);
 
-	spi_controller_get(host);
-
 	spi_unregister_controller(host);
 
 	pm_runtime_force_suspend(&pdev->dev);
-
-	spi_controller_put(host);
 }
 
 static const struct of_device_id sun4i_spi_match[] = {
-- 
2.53.0