linux-kernel - Re: Regression in v4.2-rc1 caused by hierarchical irqdomain changes

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Message-ID: <55B65DD8.9020002@linux.intel.com>
Date:	Tue, 28 Jul 2015 00:35:36 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Matt Fleming <matt@...eblueprint.co.uk>
Cc:	Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...nel.org>,
	Wolfram Sang <wsa@...-dreams.de>, linux-i2c@...r.kernel.org
Subject: Re: Regression in v4.2-rc1 caused by hierarchical irqdomain changes

On 2015/7/27 23:21, Matt Fleming wrote:
> A git bisect just pointed me at commit d32932d02e18 ("x86/irq: Convert
> IOAPIC to use hierarchical irqdomain interfaces") as the reason for why
> the trackpad on my Dell XPS13 is no longer working with v4.2-rc1.
> 
> I'm now seeing the following errors when booting,
> 
> [    1.615017] i2c_designware INT3433:00: controller timed out
> [    1.642496] i2c_designware INT3433:00: timeout in disabling adapter        
> [    1.642500] i2c_hid i2c-DLL0665:01: hid_descr_cmd failed
> 
> I tried commit d32932d02e18~1, which works, and things definitely break
> starting with commit d32932d02e18.
> 
> Any suggestions or requests to try and diagnose why the irqdomain
> changes broke this i2c controller driver?
Hi Matt,
	Sorry for the regression. Could you please help to provide
more information about the regression, such dmesg, /proc/interrupts
and hardware(PCI) info from good and bad kernels?
Thanks!
Gerry

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