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From: Ben Greear <greearb@candelatech.com>
To: Michal Kazior <michal.kazior@tieto.com>
Cc: linux-wireless <linux-wireless@vger.kernel.org>,
	"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>
Subject: Re: [PATCH 1/3] ath10k: Ensure txrx-compl-task is stopped when cleaning htt-tx.
Date: Fri, 1 Apr 2016 13:36:08 -0700	[thread overview]
Message-ID: <56FEDBB8.2080404@candelatech.com> (raw)
In-Reply-To: <CA+BoTQnmMKoK9z2QnTgBeRkXR0GdR1WV0XpOzD7JZnJ6QbHQ1w@mail.gmail.com>

On 03/31/2016 11:12 PM, Michal Kazior wrote:
> On 31 March 2016 at 22:59,  <greearb@candelatech.com> wrote:
>> From: Ben Greear <greearb@candelatech.com>
>>
>> Otherwise, the txrx-compl-task may access some bad memory?
>>
>> Signed-off-by: Ben Greear <greearb@candelatech.com>
>> ---
>>   drivers/net/wireless/ath/ath10k/htt_tx.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
>> index 07b960e..58e88d3 100644
>> --- a/drivers/net/wireless/ath/ath10k/htt_tx.c
>> +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
>> @@ -376,6 +376,8 @@ void ath10k_htt_tx_free(struct ath10k_htt *htt)
>>   {
>>          int size;
>>
>> +       tasklet_kill(&htt->txrx_compl_task);
>> +
>
> I think, instead, the ordering of ath10k_htt_tx_free() and
> ath10k_htt_rx_free() should be reversed. It's already in the "correct"
> order in ath10k_core_stop() on error path.

That seems a bit too subtle for my taste, but either way
is fine with me.  You want to cook up a patch?

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com


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WARNING: multiple messages have this Message-ID (diff)
From: Ben Greear <greearb@candelatech.com>
To: Michal Kazior <michal.kazior@tieto.com>
Cc: linux-wireless <linux-wireless@vger.kernel.org>,
	"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>
Subject: Re: [PATCH 1/3] ath10k: Ensure txrx-compl-task is stopped when cleaning htt-tx.
Date: Fri, 1 Apr 2016 13:36:08 -0700	[thread overview]
Message-ID: <56FEDBB8.2080404@candelatech.com> (raw)
In-Reply-To: <CA+BoTQnmMKoK9z2QnTgBeRkXR0GdR1WV0XpOzD7JZnJ6QbHQ1w@mail.gmail.com>

On 03/31/2016 11:12 PM, Michal Kazior wrote:
> On 31 March 2016 at 22:59,  <greearb@candelatech.com> wrote:
>> From: Ben Greear <greearb@candelatech.com>
>>
>> Otherwise, the txrx-compl-task may access some bad memory?
>>
>> Signed-off-by: Ben Greear <greearb@candelatech.com>
>> ---
>>   drivers/net/wireless/ath/ath10k/htt_tx.c | 2 ++
>>   1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
>> index 07b960e..58e88d3 100644
>> --- a/drivers/net/wireless/ath/ath10k/htt_tx.c
>> +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
>> @@ -376,6 +376,8 @@ void ath10k_htt_tx_free(struct ath10k_htt *htt)
>>   {
>>          int size;
>>
>> +       tasklet_kill(&htt->txrx_compl_task);
>> +
>
> I think, instead, the ordering of ath10k_htt_tx_free() and
> ath10k_htt_rx_free() should be reversed. It's already in the "correct"
> order in ath10k_core_stop() on error path.

That seems a bit too subtle for my taste, but either way
is fine with me.  You want to cook up a patch?

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com


  reply	other threads:[~2016-04-01 20:36 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-31 20:59 [PATCH 1/3] ath10k: Ensure txrx-compl-task is stopped when cleaning htt-tx greearb
2016-03-31 20:59 ` greearb
2016-03-31 20:59 ` [PATCH 2/3] ath10k: Ensure peer_map references are cleaned up greearb
2016-03-31 20:59   ` greearb
2016-04-01  6:18   ` Michal Kazior
2016-04-01  6:18     ` Michal Kazior
2016-03-31 20:59 ` [PATCH 3/3] ath10k: Add BUG_ON if we over-write peer-map pointer greearb
2016-03-31 20:59   ` greearb
2016-04-01  6:09   ` Michal Kazior
2016-04-01  6:09     ` Michal Kazior
2016-04-01 14:04     ` Ben Greear
2016-04-01 14:04       ` Ben Greear
2016-04-01  6:12 ` [PATCH 1/3] ath10k: Ensure txrx-compl-task is stopped when cleaning htt-tx Michal Kazior
2016-04-01  6:12   ` Michal Kazior
2016-04-01 20:36   ` Ben Greear [this message]
2016-04-01 20:36     ` Ben Greear

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