On 03/02/15 09:06, Russell King wrote:
> Add a helper to allocate and add a clk_lookup structure. This can not
> only be used in several places in clkdev.c to simplify the code, but
> more importantly, can be used by callers of the clkdev code to simplify
> their clkdev creation and registration.
>
> Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
> ---
> drivers/clk/clkdev.c | 52 ++++++++++++++++++++++++++++++++++++++------------
> include/linux/clkdev.h | 3 +++
> 2 files changed, 43 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c
> index 043fd3633373..611b9acbad78 100644
> --- a/drivers/clk/clkdev.c
> +++ b/drivers/clk/clkdev.c
> @@ -294,6 +294,19 @@ vclkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt,
> return &cla->cl;
> }
>
> +static struct clk_lookup *
> +vclkdev_create((struct clk *clk, const char *con_id, const char *dev_fmt,
> + va_list ap)
> +{
> + struct clk_lookup *cl;
> +
> + cl = vclkdev_alloc(clk, con_id, dev_fmt, ap);
> + if (cl)
> + clkdev_add(cl);
> +
> + return cl;
> +}
> +
> struct clk_lookup * __init_refok
> clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
> {
> @@ -308,6 +321,28 @@ clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
> }
> EXPORT_SYMBOL(clkdev_alloc);
>
> +/**
> + * clkdev_create - allocate and add a clkdev lookup structure
> + * @clk: struct clk to associate with all clk_lookups
> + * @con_id: connection ID string on device
> + * @dev_fmt: format string describing device name
> + *
> + * Returns a clk_lookup structure, which can be later unregistered and
> + * freed.
And returns NULL on failure? Any reason why we don't return an error
pointer on failure?
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