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Re: [PATCH 1/2] ath9k: Check for identical channels when changing channels.

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On 2010-09-28 2:07 AM, greearb@xxxxxxxxxxxxxxx wrote:
> From: Ben Greear <greearb@xxxxxxxxxxxxxxx>
> 
> Don't do un-needed work.  Should be useful when scanning on
> only the working channel.
> 
> Signed-off-by: Ben Greear <greearb@xxxxxxxxxxxxxxx>
> ---
> :100644 100644 a133878... 4d34ba5... M	drivers/net/wireless/ath/ath9k/main.c
>  drivers/net/wireless/ath/ath9k/main.c |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
> index a133878..4d34ba5 100644
> --- a/drivers/net/wireless/ath/ath9k/main.c
> +++ b/drivers/net/wireless/ath/ath9k/main.c
> @@ -1602,6 +1602,11 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
>  		struct ieee80211_channel *curchan = hw->conf.channel;
>  		int pos = curchan->hw_value;
>  
> +		/* If channels are the same, then don't actually do anything.
> +		 */
> +		if (sc->sc_ah->curchan == &sc->sc_ah->channels[pos])
> +			goto skip_chan_change;
> +
NACK. This ignores off-channel flag changes, which are important for
calibration.

- Felix
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