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SubjectRe: [PATCH 26/44] kdbus: Cleanup kdbus_pin_dst()
From
Hi

On Thu, Oct 8, 2015 at 1:31 PM, Sergei Zviagintsev <sergei@s15v.net> wrote:
> - Reduce scope of `owner' var to the block where it is actually used.
> Use conditional operator to set its value.
>
> - Drop initialization of `dst' as it gets value later.
>
> - Drop separate exit point as we have only one use case of it.
>
> Signed-off-by: Sergei Zviagintsev <sergei@s15v.net>
> ---
> ipc/kdbus/connection.c | 17 ++++++-----------
> 1 file changed, 6 insertions(+), 11 deletions(-)
>
> diff --git a/ipc/kdbus/connection.c b/ipc/kdbus/connection.c
> index 6a73ac3f444d..ace587ee951a 100644
> --- a/ipc/kdbus/connection.c
> +++ b/ipc/kdbus/connection.c
> @@ -1048,10 +1048,8 @@ static int kdbus_pin_dst(struct kdbus_bus *bus,
> struct kdbus_conn **out_dst)
> {
> const struct kdbus_msg *msg = staging->msg;
> - struct kdbus_name_owner *owner = NULL;
> struct kdbus_name_entry *name = NULL;
> - struct kdbus_conn *dst = NULL;
> - int ret;
> + struct kdbus_conn *dst;
>
> lockdep_assert_held(&bus->name_registry->rwlock);
>
> @@ -1061,14 +1059,15 @@ static int kdbus_pin_dst(struct kdbus_bus *bus,
> return -ENXIO;
>
> if (!kdbus_conn_is_ordinary(dst)) {
> - ret = -ENXIO;
> - goto error;
> + kdbus_conn_unref(dst);
> + return -ENXIO;

Looks good.

> }
> } else {
> + struct kdbus_name_owner *owner;
> +

I'd prefer if you avoid making this block-local.

> name = kdbus_name_lookup_unlocked(bus->name_registry,
> staging->dst_name);
> - if (name)
> - owner = kdbus_name_get_owner(name);
> + owner = name ? kdbus_name_get_owner(name) : NULL;

Looks good.

> if (!owner)
> return -ESRCH;
>
> @@ -1094,10 +1093,6 @@ static int kdbus_pin_dst(struct kdbus_bus *bus,
> *out_name = name;
> *out_dst = dst;
> return 0;
> -
> -error:
> - kdbus_conn_unref(dst);
> - return ret;

Looks good.

Thanks
David

> }
>
> static int kdbus_conn_reply(struct kdbus_conn *src,
> --
> 1.8.3.1
>


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