3 files changed, 53 insertions, 19 deletions

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index b9c53cc40e1f..d92d6690d615 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -393,7 +393,7 @@ config SPI_S3C24XX_FIQ
 
 config SPI_S3C64XX
 	tristate "Samsung S3C64XX series type SPI"
-	depends on (ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5P64X0 || ARCH_EXYNOS)
+	depends on PLAT_SAMSUNG
 	select S3C64XX_DMA if ARCH_S3C64XX
 	help
 	  SPI driver for Samsung S3C64XX and newer SoCs.
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index a80376dc3a10..229c6b994be3 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -1430,9 +1430,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
 
 	pm_runtime_enable(&pdev->dev);
 
-	if (spi_register_master(master)) {
-		dev_err(&pdev->dev, "cannot register SPI master\n");
-		ret = -EBUSY;
+	ret = devm_spi_register_master(&pdev->dev, master);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "cannot register SPI master: %d\n", ret);
 		goto err3;
 	}
 
@@ -1461,16 +1461,12 @@ static int s3c64xx_spi_remove(struct platform_device *pdev)
 
 	pm_runtime_disable(&pdev->dev);
 
-	spi_unregister_master(master);
-
 	writel(0, sdd->regs + S3C64XX_SPI_INT_EN);
 
 	clk_disable_unprepare(sdd->src_clk);
 
 	clk_disable_unprepare(sdd->clk);
 
-	spi_master_put(master);
-
 	return 0;
 }
 
@@ -1616,6 +1612,18 @@ static struct platform_device_id s3c64xx_spi_driver_ids[] = {
 };
 
 static const struct of_device_id s3c64xx_spi_dt_match[] = {
+	{ .compatible = "samsung,s3c2443-spi",
+			.data = (void *)&s3c2443_spi_port_config,
+	},
+	{ .compatible = "samsung,s3c6410-spi",
+			.data = (void *)&s3c6410_spi_port_config,
+	},
+	{ .compatible = "samsung,s5pc100-spi",
+			.data = (void *)&s5pc100_spi_port_config,
+	},
+	{ .compatible = "samsung,s5pv210-spi",
+			.data = (void *)&s5pv210_spi_port_config,
+	},
 	{ .compatible = "samsung,exynos4210-spi",
 			.data = (void *)&exynos4_spi_port_config,
 	},
@@ -1633,22 +1641,13 @@ static struct platform_driver s3c64xx_spi_driver = {
 		.pm = &s3c64xx_spi_pm,
 		.of_match_table = of_match_ptr(s3c64xx_spi_dt_match),
 	},
+	.probe = s3c64xx_spi_probe,
 	.remove = s3c64xx_spi_remove,
 	.id_table = s3c64xx_spi_driver_ids,
 };
 MODULE_ALIAS("platform:s3c64xx-spi");
 
-static int __init s3c64xx_spi_init(void)
-{
-	return platform_driver_probe(&s3c64xx_spi_driver, s3c64xx_spi_probe);
-}
-subsys_initcall(s3c64xx_spi_init);
-
-static void __exit s3c64xx_spi_exit(void)
-{
-	platform_driver_unregister(&s3c64xx_spi_driver);
-}
-module_exit(s3c64xx_spi_exit);
+module_platform_driver(s3c64xx_spi_driver);
 
 MODULE_AUTHOR("Jaswinder Singh <jassi.brar@samsung.com>");
 MODULE_DESCRIPTION("S3C64XX SPI Controller Driver");
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 9e039c60c068..a586ceb111fc 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1245,6 +1245,41 @@ done:
 }
 EXPORT_SYMBOL_GPL(spi_register_master);
 
+static void devm_spi_unregister(struct device *dev, void *res)
+{
+	spi_unregister_master(*(struct spi_master **)res);
+}
+
+/**
+ * dev_spi_register_master - register managed SPI master controller
+ * @dev:    device managing SPI master
+ * @master: initialized master, originally from spi_alloc_master()
+ * Context: can sleep
+ *
+ * Register a SPI device as with spi_register_master() which will
+ * automatically be unregister
+ */
+int devm_spi_register_master(struct device *dev, struct spi_master *master)
+{
+	struct spi_master **ptr;
+	int ret;
+
+	ptr = devres_alloc(devm_spi_unregister, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return -ENOMEM;
+
+	ret = spi_register_master(master);
+	if (ret != 0) {
+		*ptr = master;
+		devres_add(dev, ptr);
+	} else {
+		devres_free(ptr);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(devm_spi_register_master);
+
 static int __unregister(struct device *dev, void *null)
 {
 	spi_unregister_device(to_spi_device(dev));