From: Johannes Berg <johannes@sipsolutions.net>
To: Krishna Chaitanya <chaitanya.mgit@gmail.com>
Cc: linux-wireless <linux-wireless@vger.kernel.org>
Subject: Re: [PATCH] mac80211: Fix power save state stuck in ACTIVE caused by race between suspend and Tx packet.
Date: Wed, 20 May 2015 15:41:39 +0200 [thread overview]
Message-ID: <1432129299.19214.16.camel@sipsolutions.net> (raw)
In-Reply-To: <CABPxzY+7KDGRs3fO1wsy3FPt__YPBnzr5CcZ_HTEh2ePsdtUdQ@mail.gmail.com> (sfid-20150519_102409_031094_7235378B)
On Tue, 2015-05-19 at 13:53 +0530, Krishna Chaitanya wrote:
> > I'm not sure I get it - we always transmit a frame after resume.
> Let me explain the sequence of events:
>
> tx_frame:
> dynamic_ps_disable_work.
> get the chip out of power save.
> suspend came:
> dynamic ps timer is cancelled.
> tx queues are flushed.
> chip stays out of power save unless there is one more
> tx frame which kicks the dynamic ps timer again.
So initially, for suspend, this shouldn't matter.
And after suspend we always transmit a frame. What gives?
johannes
next prev parent reply other threads:[~2015-05-20 13:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1431602181-17700-1-git-send-email-chaitanya.mgit@gmail.com>
2015-05-19 7:31 ` [PATCH] mac80211: Fix power save state stuck in ACTIVE caused by race between suspend and Tx packet Johannes Berg
2015-05-19 8:23 ` Krishna Chaitanya
2015-05-20 13:41 ` Johannes Berg [this message]
2015-05-20 13:57 ` Krishna Chaitanya
2015-05-31 10:22 Chaitanya T K
2015-05-31 10:23 ` Krishna Chaitanya
2015-06-01 14:45 ` Johannes Berg
[not found] <1431939609-7261-1-git-send-email-chaitanya.mgit@gmail.com>
2015-05-18 9:05 ` Johannes Berg
2015-05-18 9:19 ` Krishna Chaitanya
2015-05-18 9:24 ` Johannes Berg
2015-05-18 9:28 ` Krishna Chaitanya
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