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Re: [PATCH] carl9170: fix frame drop and WARN due to minstrel_ht change

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On 2013-02-22 1:30 AM, Christian Lamparter wrote:
> With "mac80211/minstrel_ht: add support for using CCK rates"
> minstrel_ht selects legacy CCK rates as viable rates for
> outgoing frames which might be sent as part of an A-MPDU
> [IEEE80211_TX_CTL_AMPDU is set].
> 
> This behavior triggered the following WARN_ON in the driver:
>> WARNING: at carl9170/tx.c:995 carl9170_op_tx+0x1dd/0x6fd
> The driver assumed that the rate control algorithm made a
> mistake and dropped the frame.
> 
> This patch removes the noisy warning altogether and allows
> said A-MPDU frames with CCK sample and/or fallback rates to
> be transmitted seamlessly.
Shouldn't it prevent aggregation of frames with CCK in the fallback rate
chain? I don't think transmitting an A-MPDU with a CCK rate works.

- Felix
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