[Cerowrt-devel] Fwd: [bug #442] ath9k queue hang
dave.taht at gmail.com
Wed Apr 16 11:34:16 EDT 2014
On Wed, Apr 16, 2014 at 6:11 AM, Felix Fietkau <nbd at openwrt.org> wrote:
> On 2014-04-15 21:00, Dave Taht wrote:
>> Thx felix!
>> Given that there seems to be a potential race in the code
>> review I did at:
>> another thought is to make the increment and decrement of
>> txq->pending_frame atomic, or to do a flush before the unlock
> I'm not convinced that there's a race that involves txq->pending_frames.
> There is no need to make the increment/decrement atomic, because that
> variable is already protected by the txq lock.
It and "stopped" are briefly unprotected along that code path.
>> What tree is this patch against?
> mac80211 from OpenWrt trunk.
Thx, will try your patch today.
> - Felix
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