[PATCH 14/19] spi: lantiq-ssc: 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-lantiq-ssc.c | 28 ++++++++--------------------
 1 file changed, 8 insertions(+), 20 deletions(-)

diff --git a/drivers/spi/spi-lantiq-ssc.c b/drivers/spi/spi-lantiq-ssc.c
index 75b9af8cb5db..ecae50a50b14 100644
--- a/drivers/spi/spi-lantiq-ssc.c
+++ b/drivers/spi/spi-lantiq-ssc.c
@@ -913,7 +913,7 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
 
 	hwcfg = of_device_get_match_data(dev);
 
-	host = spi_alloc_host(dev, sizeof(struct lantiq_ssc_spi));
+	host = devm_spi_alloc_host(dev, sizeof(struct lantiq_ssc_spi));
 	if (!host)
 		return -ENOMEM;
 
@@ -923,20 +923,16 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
 	spi->hwcfg = hwcfg;
 	platform_set_drvdata(pdev, spi);
 	spi->regbase = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(spi->regbase)) {
-		err = PTR_ERR(spi->regbase);
-		goto err_host_put;
-	}
+	if (IS_ERR(spi->regbase))
+		return PTR_ERR(spi->regbase);
 
 	err = hwcfg->cfg_irq(pdev, spi);
 	if (err)
-		goto err_host_put;
+		return err;
 
 	spi->spi_clk = devm_clk_get_enabled(dev, "gate");
-	if (IS_ERR(spi->spi_clk)) {
-		err = PTR_ERR(spi->spi_clk);
-		goto err_host_put;
-	}
+	if (IS_ERR(spi->spi_clk))
+		return PTR_ERR(spi->spi_clk);
 
 	/*
 	 * Use the old clk_get_fpi() function on Lantiq platform, till it
@@ -947,10 +943,8 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
 #else
 	spi->fpi_clk = clk_get(dev, "freq");
 #endif
-	if (IS_ERR(spi->fpi_clk)) {
-		err = PTR_ERR(spi->fpi_clk);
-		goto err_host_put;
-	}
+	if (IS_ERR(spi->fpi_clk))
+		return PTR_ERR(spi->fpi_clk);
 
 	num_cs = 8;
 	of_property_read_u32(pdev->dev.of_node, "num-cs", &num_cs);
@@ -1006,8 +1000,6 @@ static int lantiq_ssc_probe(struct platform_device *pdev)
 	destroy_workqueue(spi->wq);
 err_clk_put:
 	clk_put(spi->fpi_clk);
-err_host_put:
-	spi_controller_put(host);
 
 	return err;
 }
@@ -1016,8 +1008,6 @@ static void lantiq_ssc_remove(struct platform_device *pdev)
 {
 	struct lantiq_ssc_spi *spi = platform_get_drvdata(pdev);
 
-	spi_controller_get(spi->host);
-
 	spi_unregister_controller(spi->host);
 
 	lantiq_ssc_writel(spi, 0, LTQ_SPI_IRNEN);
@@ -1028,8 +1018,6 @@ static void lantiq_ssc_remove(struct platform_device *pdev)
 
 	destroy_workqueue(spi->wq);
 	clk_put(spi->fpi_clk);
-
-	spi_controller_put(spi->host);
 }
 
 static struct platform_driver lantiq_ssc_driver = {
-- 
2.53.0