4 files changed, 30 insertions, 10 deletions

diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index a5cba14ac3d2..21ce0e36fa00 100644
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -16,7 +16,9 @@
 #include <linux/spi/spi.h>
 #include <linux/scatterlist.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/of_gpio.h>
+#include <linux/of_platform.h>
 
 #include "spi-dw.h"
 
@@ -33,6 +35,7 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
 	struct dw_spi *dws;
 	struct resource *mem;
 	int ret;
+	int num_cs;
 
 	dwsmmio = devm_kzalloc(&pdev->dev, sizeof(struct dw_spi_mmio),
 			GFP_KERNEL);
@@ -68,9 +71,16 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
 		return ret;
 
 	dws->bus_num = pdev->id;
-	dws->num_cs = 4;
+
 	dws->max_freq = clk_get_rate(dwsmmio->clk);
 
+	num_cs = 4;
+
+	if (pdev->dev.of_node)
+		of_property_read_u32(pdev->dev.of_node, "num-cs", &num_cs);
+
+	dws->num_cs = num_cs;
+
 	if (pdev->dev.of_node) {
 		int i;
 
@@ -114,12 +124,19 @@ static int dw_spi_mmio_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct of_device_id dw_spi_mmio_of_match[] = {
+	{ .compatible = "snps,dw-apb-ssi", },
+	{ /* end of table */}
+};
+MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match);
+
 static struct platform_driver dw_spi_mmio_driver = {
 	.probe		= dw_spi_mmio_probe,
 	.remove		= dw_spi_mmio_remove,
 	.driver		= {
 		.name	= DRIVER_NAME,
 		.owner	= THIS_MODULE,
+		.of_match_table = dw_spi_mmio_of_match,
 	},
 };
 module_platform_driver(dw_spi_mmio_driver);
diff --git a/drivers/spi/spi-efm32.c b/drivers/spi/spi-efm32.c
index be44a3eeb5e8..6caeb1cac0f3 100644
--- a/drivers/spi/spi-efm32.c
+++ b/drivers/spi/spi-efm32.c
@@ -294,10 +294,16 @@ static void efm32_spi_probe_dt(struct platform_device *pdev,
 	u32 location;
 	int ret;
 
-	ret = of_property_read_u32(np, "efm32,location", &location);
+	ret = of_property_read_u32(np, "energymicro,location", &location);
+
+	if (ret)
+		/* fall back to wrongly namespaced property */
+		ret = of_property_read_u32(np, "efm32,location", &location);
+
 	if (ret)
 		/* fall back to old and (wrongly) generic property "location" */
 		ret = of_property_read_u32(np, "location", &location);
+
 	if (!ret) {
 		dev_dbg(&pdev->dev, "using location %u\n", location);
 	} else {
diff --git a/drivers/spi/spi-fsl-lib.c b/drivers/spi/spi-fsl-lib.c
index 95212ea96c8d..e0b773fc29cb 100644
--- a/drivers/spi/spi-fsl-lib.c
+++ b/drivers/spi/spi-fsl-lib.c
@@ -196,7 +196,7 @@ int of_mpc8xxx_spi_probe(struct platform_device *ofdev)
 
 	pinfo = devm_kzalloc(&ofdev->dev, sizeof(*pinfo), GFP_KERNEL);
 	if (!pinfo)
-		return -ENOMEM;
+		return ret;
 
 	pdata = &pinfo->pdata;
 	dev->platform_data = pdata;
diff --git a/drivers/spi/spi-omap-uwire.c b/drivers/spi/spi-omap-uwire.c
index 0f5a0aa3b871..8bca90a19dd1 100644
--- a/drivers/spi/spi-omap-uwire.c
+++ b/drivers/spi/spi-omap-uwire.c
@@ -41,14 +41,15 @@
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/slab.h>
+#include <linux/device.h>
 
 #include <linux/spi/spi.h>
 #include <linux/spi/spi_bitbang.h>
 #include <linux/module.h>
+#include <linux/io.h>
 
 #include <asm/irq.h>
 #include <mach/hardware.h>
-#include <asm/io.h>
 #include <asm/mach-types.h>
 
 #include <mach/mux.h>
@@ -447,7 +448,6 @@ static void uwire_off(struct uwire_spi *uwire)
 {
 	uwire_write_reg(UWIRE_SR3, 0);
 	clk_disable(uwire->ck);
-	clk_put(uwire->ck);
 	spi_master_put(uwire->bitbang.master);
 }
 
@@ -463,7 +463,7 @@ static int uwire_probe(struct platform_device *pdev)
 
 	uwire = spi_master_get_devdata(master);
 
-	uwire_base = ioremap(UWIRE_BASE_PHYS, UWIRE_IO_SIZE);
+	uwire_base = devm_ioremap(&pdev->dev, UWIRE_BASE_PHYS, UWIRE_IO_SIZE);
 	if (!uwire_base) {
 		dev_dbg(&pdev->dev, "can't ioremap UWIRE\n");
 		spi_master_put(master);
@@ -472,12 +472,11 @@ static int uwire_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, uwire);
 
-	uwire->ck = clk_get(&pdev->dev, "fck");
+	uwire->ck = devm_clk_get(&pdev->dev, "fck");
 	if (IS_ERR(uwire->ck)) {
 		status = PTR_ERR(uwire->ck);
 		dev_dbg(&pdev->dev, "no functional clock?\n");
 		spi_master_put(master);
-		iounmap(uwire_base);
 		return status;
 	}
 	clk_enable(uwire->ck);
@@ -507,7 +506,6 @@ static int uwire_probe(struct platform_device *pdev)
 	status = spi_bitbang_start(&uwire->bitbang);
 	if (status < 0) {
 		uwire_off(uwire);
-		iounmap(uwire_base);
 	}
 	return status;
 }
@@ -520,7 +518,6 @@ static int uwire_remove(struct platform_device *pdev)
 
 	spi_bitbang_stop(&uwire->bitbang);
 	uwire_off(uwire);
-	iounmap(uwire_base);
 	return 0;
 }