[PATCH 0/2] serial: amba-pl01x: Clean up patches

[PATCH 0/2] serial: amba-pl01x: Clean up patches

[Tushar Behera]

The patches are based next-20140626 and they have only been build
tested.

Tushar Behera (2):
  serial: amba-pl011: Remove redundant label
  serial: amba-pl010: Use devres APIs

 drivers/tty/serial/amba-pl010.c |   48 +++++++++++++--------------------------
 drivers/tty/serial/amba-pl011.c |   30 ++++++++----------------
 2 files changed, 26 insertions(+), 52 deletions(-)

-- 
1.7.9.5

[PATCH V2 1/2] serial: amba-pl011: Remove redundant label

[Tushar Behera]

The label 'out' is only used to return the error code. We can return the
error code directly and remove 'out' label.

Signed-off-by: Tushar Behera <tushar.b@samsung.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
---
Changes for V2:
* Added Reviewed-by tag

 drivers/tty/serial/amba-pl011.c |   30 ++++++++++--------------------
 1 file changed, 10 insertions(+), 20 deletions(-)

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 0e26dcb..8572f2a 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -1484,7 +1484,7 @@ static int pl011_hwinit(struct uart_port *port)
 	 */
 	retval = clk_prepare_enable(uap->clk);
 	if (retval)
-		goto out;
+		return retval;
 
 	uap->port.uartclk = clk_get_rate(uap->clk);
 
@@ -1507,8 +1507,6 @@ static int pl011_hwinit(struct uart_port *port)
 			plat->init();
 	}
 	return 0;
- out:
-	return retval;
 }
 
 static void pl011_write_lcr_h(struct uart_amba_port *uap, unsigned int lcr_h)
@@ -2131,32 +2129,24 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
 		if (amba_ports[i] == NULL)
 			break;
 
-	if (i == ARRAY_SIZE(amba_ports)) {
-		ret = -EBUSY;
-		goto out;
-	}
+	if (i == ARRAY_SIZE(amba_ports))
+		return -EBUSY;
 
 	uap = devm_kzalloc(&dev->dev, sizeof(struct uart_amba_port),
 			   GFP_KERNEL);
-	if (uap == NULL) {
-		ret = -ENOMEM;
-		goto out;
-	}
+	if (uap == NULL)
+		return -ENOMEM;
 
 	i = pl011_probe_dt_alias(i, &dev->dev);
 
 	base = devm_ioremap(&dev->dev, dev->res.start,
 			    resource_size(&dev->res));
-	if (!base) {
-		ret = -ENOMEM;
-		goto out;
-	}
+	if (!base)
+		return -ENOMEM;
 
 	uap->clk = devm_clk_get(&dev->dev, NULL);
-	if (IS_ERR(uap->clk)) {
-		ret = PTR_ERR(uap->clk);
-		goto out;
-	}
+	if (IS_ERR(uap->clk))
+		return PTR_ERR(uap->clk);
 
 	uap->vendor = vendor;
 	uap->lcrh_rx = vendor->lcrh_rx;
@@ -2198,7 +2188,7 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
 		uart_unregister_driver(&amba_reg);
 		pl011_dma_remove(uap);
 	}
- out:
+
 	return ret;
 }
 
-- 
1.7.9.5

[PATCH V2 2/2] serial: amba-pl010: Use devres APIs

[Tushar Behera]

Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and
devm_clk_get.

Signed-off-by: Tushar Behera <tushar.b@samsung.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
---
Changes for V2:
* Added Reviewed-by tag
* Removed redundant asm/io.h

 drivers/tty/serial/amba-pl010.c |   48 +++++++++++++--------------------------
 1 file changed, 16 insertions(+), 32 deletions(-)

diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
index 971af1e..2064d31 100644
--- a/drivers/tty/serial/amba-pl010.c
+++ b/drivers/tty/serial/amba-pl010.c
@@ -46,8 +46,7 @@
 #include <linux/amba/serial.h>
 #include <linux/clk.h>
 #include <linux/slab.h>
-
-#include <asm/io.h>
+#include <linux/io.h>
 
 #define UART_NR		8
 
@@ -688,28 +687,22 @@ static int pl010_probe(struct amba_device *dev, const struct amba_id *id)
 		if (amba_ports[i] == NULL)
 			break;
 
-	if (i == ARRAY_SIZE(amba_ports)) {
-		ret = -EBUSY;
-		goto out;
-	}
+	if (i == ARRAY_SIZE(amba_ports))
+		return -EBUSY;
 
-	uap = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
-	if (!uap) {
-		ret = -ENOMEM;
-		goto out;
-	}
+	uap = devm_kzalloc(&dev->dev, sizeof(struct uart_amba_port),
+			   GFP_KERNEL);
+	if (!uap)
+		return -ENOMEM;
 
-	base = ioremap(dev->res.start, resource_size(&dev->res));
-	if (!base) {
-		ret = -ENOMEM;
-		goto free;
-	}
+	base = devm_ioremap(&dev->dev, dev->res.start,
+			    resource_size(&dev->res));
+	if (!base)
+		return -ENOMEM;
 
-	uap->clk = clk_get(&dev->dev, NULL);
-	if (IS_ERR(uap->clk)) {
-		ret = PTR_ERR(uap->clk);
-		goto unmap;
-	}
+	uap->clk = devm_clk_get(&dev->dev, NULL);
+	if (IS_ERR(uap->clk))
+		return PTR_ERR(uap->clk);
 
 	uap->port.dev = &dev->dev;
 	uap->port.mapbase = dev->res.start;
@@ -727,15 +720,9 @@ static int pl010_probe(struct amba_device *dev, const struct amba_id *id)
 
 	amba_set_drvdata(dev, uap);
 	ret = uart_add_one_port(&amba_reg, &uap->port);
-	if (ret) {
+	if (ret)
 		amba_ports[i] = NULL;
-		clk_put(uap->clk);
- unmap:
-		iounmap(base);
- free:
-		kfree(uap);
-	}
- out:
+
 	return ret;
 }
 
@@ -750,9 +737,6 @@ static int pl010_remove(struct amba_device *dev)
 		if (amba_ports[i] == uap)
 			amba_ports[i] = NULL;
 
-	iounmap(uap->port.membase);
-	clk_put(uap->clk);
-	kfree(uap);
 	return 0;
 }
 
-- 
1.7.9.5