linux-kernel - Re: [LKP] [x86/platform, acpi] 7486341a98f: genirq: Flags mismatch irq 8. 00000080 (mmc0) vs. 00000000 (rtc0)

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Date:	Wed, 25 Mar 2015 15:22:34 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	"Li, Aubrey" <aubrey.li@...ux.intel.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>
Subject: Re: [LKP] [x86/platform, acpi] 7486341a98f: genirq: Flags mismatch
 irq 8. 00000080 (mmc0) vs. 00000000 (rtc0)

On Tue, 2015-03-24 at 13:34 +0800, Li, Aubrey wrote:
> On 2015/3/24 8:53, Huang Ying wrote:
> > On Mon, 2015-03-23 at 14:18 +0800, Li, Aubrey wrote:
> >> On 2015/3/20 16:38, Huang Ying wrote:
> >>> FYI, we noticed the below changes on
> >>>
> >>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> >>> commit 7486341a98f26857f383aec88ffa10950087c3a1 ("x86/platform, acpi: Bypass legacy PIC and PIT in ACPI hardware reduced mode")
> >>>
> >>>
> >>> +-----------------+------------+------------+
> >>> |                 | 394838c960 | 7486341a98 |
> >>> +-----------------+------------+------------+
> >>> | boot_successes  | 10         | 10         |
> >>> | early-boot-hang | 1          | 1          |
> >>> +-----------------+------------+------------+
> >>>
> >>>
> >>> [   28.682462] microcode: CPU3 sig=0x30673, pf=0x2, revision=0x31e
> >>> [   28.692739] microcode: Microcode Update Driver: v2.00 <tigran@...azian.fsnet.co.uk>, Peter Oruba
> >>> [   28.739947] mmc0: Reset 0x1 never completed.
> >>> [   28.745155] genirq: Flags mismatch irq 8. 00000080 (mmc0) vs. 00000000 (rtc0)
> >>
> >> mmc driver requests IRQ 8?
> >> From surface it looks like either a firmware issue or ACPI get the wrong
> >> IRQ resource.
> >> I failed to replicate this issue with the attached config file on my
> >> side, which platform is the test running?
> > 
> > Sorry for late.  The test was running on an ASUS T100TA.
> 
> okay, I got that machine in your lab.
> With the attached config, I got dmesg attached as well. I didn't see
> this problem. If you can replicate this on v4.0.0-rc5, please send me
> the config file.

We can reproduce the issue on v4.0.0-rc5 with the attached config.  The
dmesg is attached too.

Best Regards,
Huang, Ying


View attachment "config-4.0.0-rc5" of type "text/x-mpsub" (128915 bytes)

View attachment "dmesg" of type "text/plain" (157664 bytes)