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
Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and
devm_clk_get.
Signed-off-by: Tushar Behera <[email protected]>
Reviewed-by: Daniel Thompson <[email protected]>
---
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
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 <[email protected]>
Reviewed-by: Daniel Thompson <[email protected]>
---
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