On Saturday 29 May 2010, mark gross wrote:
> The following patch is to help clean up API abusers of pm_qos where
> they call update_request before registering a request.
>
> --mgross
>
> --Signed-off-by: markgross <markgross@xxxxxxxxxxx>
Will there be a big issue if I push this during the next merge window?
Rafael
> From a0813007ddc7b72cb3da7a533fefba9889aab1d8 Mon Sep 17 00:00:00 2001
> From: mgross <mgross@mgross-desktop.(none)>
> Date: Fri, 28 May 2010 21:36:06 -0700
> Subject: [PATCH] complain when users abuse the pm_qos API by updating a request that
> isn't registered yet.
>
> ---
> kernel/pm_qos_params.c | 4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/kernel/pm_qos_params.c b/kernel/pm_qos_params.c
> index f42d3f7..8e55bf1 100644
> --- a/kernel/pm_qos_params.c
> +++ b/kernel/pm_qos_params.c
> @@ -266,6 +266,10 @@ void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req,
> spin_unlock_irqrestore(&pm_qos_lock, flags);
> if (pending_update)
> update_target(pm_qos_req->pm_qos_class);
> + } else {
> + WARN(true, "pm_qos: updating an unregistered request "
> + "does nothing");
> + dump_stack();
> }
> }
> EXPORT_SYMBOL_GPL(pm_qos_update_request);
>
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