Hi Andrey,
On Fri, Oct 26, 2018 at 06:32:29PM -0700, Andrey Smirnov wrote:
> Both dev_request_mem_region() and dev_request_mem_region_err_null()
> implement exactly the same functionality different only in error
> reporting value. Change the code to make use of a common generic
> function whose return type can be specified via an argument.
Same story as PATCH 6/6 where a helper functions does
two things depending on a bool.
For simple functions like this my personal preference
is to keep the small functions that are more explicit.
Sam
>
> Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
> ---
> drivers/base/driver.c | 18 +++++++++---------
> 1 file changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/base/driver.c b/drivers/base/driver.c
> index c687afd75..476f844be 100644
> --- a/drivers/base/driver.c
> +++ b/drivers/base/driver.c
> @@ -407,27 +407,27 @@ struct resource *dev_request_mem_resource(struct device_d *dev, int num)
> return request_iomem_region(dev_name(dev), res->start, res->end);
> }
>
> -void __iomem *dev_request_mem_region_err_null(struct device_d *dev, int num)
> +static void __iomem *__dev_request_mem_region(struct device_d *dev, int num,
> + bool null_on_error)
> {
> struct resource *res;
>
> res = dev_request_mem_resource(dev, num);
> if (IS_ERR(res))
> - return NULL;
> + return null_on_error ? NULL : ERR_CAST(res);
>
> return IOMEM(res->start);
> }
> +
> +void __iomem *dev_request_mem_region_err_null(struct device_d *dev, int num)
> +{
> + return __dev_request_mem_region(dev, num, true);
> +}
> EXPORT_SYMBOL(dev_request_mem_region_err_null);
>
> void __iomem *dev_request_mem_region(struct device_d *dev, int num)
> {
> - struct resource *res;
> -
> - res = dev_request_mem_resource(dev, num);
> - if (IS_ERR(res))
> - return ERR_CAST(res);
> -
> - return IOMEM(res->start);
> + return __dev_request_mem_region(dev, num, false);
> }
> EXPORT_SYMBOL(dev_request_mem_region);
>
> --
> 2.17.1
>
>
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