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

Tushar Behera
2014-06-26T09:37:59Z

On 06/23/2014 06:16 PM, Daniel Thompson wrote:
> On 23/06/14 06:59, Tushar Behera wrote:
>> Migrating to use devres managed APIs devm_kzalloc, devm_ioremap and
>> devm_clk_get.
>>
>> Signed-off-by: Tushar Behera <tushar.b@samsung.com>
>> ---
>> drivers/tty/serial/amba-pl010.c | 46 ++++++++++++++-------------------------
>> 1 file changed, 16 insertions(+), 30 deletions(-)
>>
>> diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
>> index 971af1e..af8deba 100644
>> --- a/drivers/tty/serial/amba-pl010.c
>> +++ b/drivers/tty/serial/amba-pl010.c
>> @@ -46,6 +46,7 @@
>> #include <linux/amba/serial.h>
>> #include <linux/clk.h>
>> #include <linux/slab.h>
>> +#include <linux/io.h>
>>
>> #include <asm/io.h>
>
> Adding <linux/io.h> makes including <asm/io.h> redundant.
>

Okay, I will remove the <asm/io.h> in next iteration.

>
>> @@ -688,28 +689,22 @@ 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 +722,9 @@ 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 +739,6 @@ 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;
>> }
>
> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
>

Thanks for reviewing.

--
Tushar Behera