On Wed, Mar 28, 2012 at 10:58 AM, Johannes Berg
<johannes@xxxxxxxxxxxxxxxx> wrote:
> From: Johannes Berg <johannes.berg@xxxxxxxxx>
>
> Devices that have internal rate control need to be
> notified when the bandwidth or SMPS state changes
> just like external rate control algorithms get a
> notification now.
>
> Add this notification and clarify the change bits
> while at it, the HT_CHANGED bit really meant only
> bandwidth changed.
>
> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
> ---
[...]
> *
> + * @sta_rc_update: Notifies the driver of changes to the bitrates that can be
> + * used to transmit to the station. The changes are advertised with bits
> + * from &enum ieee80211_rate_control_changed and the values are reflected
> + * in the station data. This callback should only be used when the driver
> + * uses hardware rate control (%IEEE80211_HW_HAS_RATE_CONTROL) since
> + * otherwise the rate control algorithm is notified directly.
> + * Must be atomic.
> + *
it's either atomic...
> +static inline void drv_sta_rc_update(struct ieee80211_local *local,
> + struct ieee80211_sub_if_data *sdata,
> + struct ieee80211_sta *sta, u32 changed)
> +{
> + might_sleep();
or might sleep :)
Eliad.
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