Subject: Re: ATA failure regression in kernel 4.2
To: Alexander Holler <holler@ahsoftware.de>,
        Alex Deucher <alexdeucher@gmail.com>
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 <55B59F22.2010102@linux.intel.com>
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 <55B7CBE8.6090801@ahsoftware.de> <55BB500F.8050706@ahsoftware.de>
Cc: Tejun Heo <tj@kernel.org>, LKML <linux-kernel@vger.kernel.org>
From: Jiang Liu <jiang.liu@linux.intel.com>
Organization: Intel
Message-ID: <55BB5119.5040308@linux.intel.com>
Date: Fri, 31 Jul 2015 18:42:33 +0800
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On 2015/7/31 18:38, Alexander Holler wrote:
> Am 28.07.2015 um 20:37 schrieb Alexander Holler:
> 
>> Same problem here with the AMD SATA controller (1022:7801). It failed to
>> identify the second disk when using 4.2-rc4.
>>
>> nointremap helped, nothing else tested
> 
> A quick look at the change history and two tests are suggesting that the
> right one already is in cc.
> 
> commit
> 
> f7fa7ae x86/irq: Avoid memory allocation in __assign_irq_vector()
> 
> fails while
> 
> af87bae x86/htirq: Use new irqdomain interfaces to allocate/free IRQ
> 
> works. Inbetween almost all changes are from Jiang Liu.
> 
> Haven't bisected it up to now but might do it later.
Hi Alexander,
	Really thanks for you help. I have debugged this regression
for a whole day without any progress:( Everything seems correct to me,
and I have no hardware to reproduce and debug it. Still need more time:(
Thanks!
Gerry
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