Bug 151711

Summary:	[AR9285] WiFi LED stops working after suspend/hibernate cycle
Product:	Drivers	Reporter:	Coacher (itumaykin+kernel)
Component:	network-wireless	Assignee:	drivers_network-wireless (drivers_network-wireless)
Status:	RESOLVED CODE_FIX
Severity:	normal	CC:	giedrius.statkevicius, mswindows2003
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	4.7.0	Subsystem:
Regression:	Yes	Bisected commit-id:
Attachments:	lspci config.gz

Description Coacher 2016-08-08 08:12:40 UTC

Created attachment 227911 [details]
lspci

Hello.

After kernel upgrade from 4.6.4 to 4.7.0 WiFi LED stops working after 
suspend/hibernate cycle. LED works properly right after (re)boot. LED worked 
properly after suspend/hibernate cycle with 4.6.4, thus it's a regression.

My hardware is "Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) 
[168c:002b] (rev 01)", my OS is Gentoo amd64, my ath9k modprobe configuration 
is "options ath9k blink=0 btcoex_enable=1 bt_ant_diversity=1 ps_enable=1".
I've attached my kernel configuration and "lspci -vvv -nn -k" output.
Please let me know if you need more info.

Steps to reproduce:
1. Boot computer and connect to WiFi network.
2. Suspend/hibernate computer.
3. Resume/thaw computer.
4. Connect to WiFi network again.

Actual results:
WiFi LED is off.

Expected results:
WiFi LED is on.

Please fix.

-- 
Best regards.
Ilya Tumaykin.

P.S. This is a copy-paste from my e-mail I've sent about a week ago to QCA ath9k Development <ath9k-devel@qca.qualcomm.com>, CC'ing linux-wireless@vger.kernel.org, ath9k-devel@lists.ath9k.org.
I can't see it at https://lists.ath9k.org/pipermail/ath9k-devel/ still.

Comment 1 Coacher 2016-08-08 08:14:12 UTC

Created attachment 227921 [details]
config.gz

Comment 2 Giedrius Statkevičius 2016-09-02 09:47:26 UTC

Can you try https://lkml.org/lkml/2016/9/1/702 this patch and see if it helps you? Also, if it helps you can I add a tested-by tag to it?

Comment 3 mswindows2003 2016-09-06 05:06:48 UTC

(In reply to Giedrius Statkevičius from comment #2)
> Can you try https://lkml.org/lkml/2016/9/1/702 this patch and see if it
> helps you? Also, if it helps you can I add a tested-by tag to it?

I've tried this patch. It works. Thank you very much!

Comment 4 Coacher 2016-09-11 10:48:23 UTC

(In reply to Giedrius Statkevičius from comment #2)
> Can you try https://lkml.org/lkml/2016/9/1/702 this patch and see if it
> helps you? Also, if it helps you can I add a tested-by tag to it?
I can confirm that this patch applied on top of 4.7.3 fixes the problem for me.
Thank you. Feel free to add tested-by tag if you'd like.

Comment 5 Giedrius Statkevičius 2016-09-15 22:10:17 UTC

The patch that fixes this issue was accepted into 4.8 and should at some time be in the 4.7.x tree as well. Please close the bug. Thanks.

Comment 6 Coacher 2016-09-25 11:30:22 UTC

Fixed in the recently released 4.7.5. Thank you. Closing.