[PATCH 08/19] spi: coldfire-qspi: 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-coldfire-qspi.c | 28 ++++++++--------------------
 1 file changed, 8 insertions(+), 20 deletions(-)

diff --git a/drivers/spi/spi-coldfire-qspi.c b/drivers/spi/spi-coldfire-qspi.c
index b45f44de85dc..3b175c1da36b 100644
--- a/drivers/spi/spi-coldfire-qspi.c
+++ b/drivers/spi/spi-coldfire-qspi.c
@@ -353,39 +353,33 @@ static int mcfqspi_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	host = spi_alloc_host(&pdev->dev, sizeof(*mcfqspi));
-	if (host == NULL) {
-		dev_dbg(&pdev->dev, "spi_alloc_host failed\n");
+	host = devm_spi_alloc_host(&pdev->dev, sizeof(*mcfqspi));
+	if (host == NULL)
 		return -ENOMEM;
-	}
 
 	mcfqspi = spi_controller_get_devdata(host);
 
 	mcfqspi->iobase = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(mcfqspi->iobase)) {
-		status = PTR_ERR(mcfqspi->iobase);
-		goto fail0;
-	}
+	if (IS_ERR(mcfqspi->iobase))
+		return PTR_ERR(mcfqspi->iobase);
 
 	mcfqspi->irq = platform_get_irq(pdev, 0);
 	if (mcfqspi->irq < 0) {
 		dev_dbg(&pdev->dev, "platform_get_irq failed\n");
-		status = -ENXIO;
-		goto fail0;
+		return -ENXIO;
 	}
 
 	status = devm_request_irq(&pdev->dev, mcfqspi->irq, mcfqspi_irq_handler,
 				0, pdev->name, mcfqspi);
 	if (status) {
 		dev_dbg(&pdev->dev, "request_irq failed\n");
-		goto fail0;
+		return status;
 	}
 
 	mcfqspi->clk = devm_clk_get_enabled(&pdev->dev, "qspi_clk");
 	if (IS_ERR(mcfqspi->clk)) {
 		dev_dbg(&pdev->dev, "clk_get failed\n");
-		status = PTR_ERR(mcfqspi->clk);
-		goto fail0;
+		return PTR_ERR(mcfqspi->clk);
 	}
 
 	host->bus_num = pdata->bus_num;
@@ -395,7 +389,7 @@ static int mcfqspi_probe(struct platform_device *pdev)
 	status = mcfqspi_cs_setup(mcfqspi);
 	if (status) {
 		dev_dbg(&pdev->dev, "error initializing cs_control\n");
-		goto fail0;
+		return status;
 	}
 
 	init_waitqueue_head(&mcfqspi->waitq);
@@ -423,8 +417,6 @@ static int mcfqspi_probe(struct platform_device *pdev)
 fail1:
 	pm_runtime_disable(&pdev->dev);
 	mcfqspi_cs_teardown(mcfqspi);
-fail0:
-	spi_controller_put(host);
 
 	dev_dbg(&pdev->dev, "Coldfire QSPI probe failed\n");
 
@@ -436,8 +428,6 @@ static void mcfqspi_remove(struct platform_device *pdev)
 	struct spi_controller *host = platform_get_drvdata(pdev);
 	struct mcfqspi *mcfqspi = spi_controller_get_devdata(host);
 
-	spi_controller_get(host);
-
 	spi_unregister_controller(host);
 
 	pm_runtime_disable(&pdev->dev);
@@ -445,8 +435,6 @@ static void mcfqspi_remove(struct platform_device *pdev)
 	mcfqspi_wr_qmr(mcfqspi, MCFQSPI_QMR_MSTR);
 
 	mcfqspi_cs_teardown(mcfqspi);
-
-	spi_controller_put(host);
 }
 
 #ifdef CONFIG_PM_SLEEP
-- 
2.53.0