linux-kernel - Re: [REGRESSION] resume takes 10s longer due to e1b6eb3 (Bluetooth: Increase HCI reset timeout ...)

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Date:	Sun, 12 Feb 2012 12:37:43 +0100
From:	Tomas Janousek <tomi@...i.cz>
To:	Szymon Janc <szymon@...c.net.pl>
Cc:	Gustavo Padovan <padovan@...fusion.mobi>,
	Johan Hedberg <johan.hedberg@...il.com>,
	Marcel Holtmann <marcel@...tmann.org>,
	linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
	Linux PM mailing list <linux-pm@...r.kernel.org>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
Subject: Re: [REGRESSION] resume takes 10s longer due to e1b6eb3 (Bluetooth:
 Increase HCI reset timeout ...)

Hi,

On Wed, Dec 28, 2011 at 08:21:04PM +0100, Szymon Janc wrote:
> We need to figure out why command complete event to reset command is not 
> received and we get timeout for your bt chip.
> 
> So first please provide kernel debug logs and hcidump while resuming (with 
> timeout set to 10s). Also for kernel logs please make sure you have kernel 
> prints timestamps enabled.
> 
> hcidump -t
> 
> kernel:
> echo "module bluetooth +pf" >/sys/kernel/debug/dynamic_debug/control
> echo "module btusb +pf" >/sys/kernel/debug/dynamic_debug/control

I'm attaching dmesg and hcidump output.

I'm sorry for the delay, I did not have a kernel with dynamic_debug enabled
and I didn't have time to reboot and lose my open terminals. Now I updated to
today's kernel snapshot and enabled debugging, so as long as I don't have to
reboot, I should be able to react quickly. :-)

Regards,
-- 
Tomáš Janoušek, a.k.a. Liskni_si, http://work.lisk.in/

View attachment "dmesg" of type "text/plain" (125185 bytes)

View attachment "hcidump" of type "text/plain" (117 bytes)