linux-kernel - Re: Oops: 17 SMP ARM (v3.16-rc2)

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Date:	Fri, 8 Aug 2014 11:05:34 -0300
From:	Fabio Estevam <festevam@...il.com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Mattis Lorentzon <Mattis.Lorentzon@...oliv.com>,
	Fredrik Noring <fredrik.noring@...oliv.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: Oops: 17 SMP ARM (v3.16-rc2)

Mattis,

On Thu, Aug 7, 2014 at 11:20 AM, Fabio Estevam <festevam@...il.com> wrote:
> On Thu, Aug 7, 2014 at 9:12 AM, Russell King - ARM Linux
> <linux@....linux.org.uk> wrote:
>
>> Hmm, I'm slightly confused.  On my iMX6Q, I have:
>>
>> 150:     581754          0          0          0       GIC 150  2188000.ethernet
>> 151:          0          0          0          0       GIC 151  2188000.ethernet
>
> Same here on a mx6qsabresd.
>
>> In the DT file, we have:
>>
>>                         fec: ethernet@...88000 {
>>                                 compatible = "fsl,imx6q-fec";
>>                                 reg = <0x02188000 0x4000>;
>>                                 interrupts-extended =
>>                                         <&intc 0 118 IRQ_TYPE_LEVEL_HIGH>,
>>                                         <&intc 0 119 IRQ_TYPE_LEVEL_HIGH>;
>>                                 clocks = <&clks 117>, <&clks 117>, <&clks 190>;
>>                                 clock-names = "ipg", "ahb", "ptp";
>>                                 status = "disabled";
>>                         };
>>
>> which, for the gic, would be 118 + 32 (first SPI) = 150, 119 + 32 = 151.
>> Yet you seem to have nothing registered against GIC 150, instead having
>> an interrupt against GPIO 6.
>>
>> This seems very odd, and as this is an on-SoC device, I don't see why
>> you would want to bind the interrupts for the FEC device any differently
>> to standard platforms.
>>
>> This could well be the cause of your stalls.
>>
>> What's GPIO 6 used for on your board?
>
> On a imx6q sabreauto I also get:
>
> 151:          0          0          0          0       GIC 151  2188000.ethernet
> 166:       4577          0          0          0  gpio-mxc   6  2188000.ethernet

Could you remove 'interrupts-extended'  from the FEC node and also
MX6QDL_PAD_GPIO_6__ENET_IRQ from the pinctrl node and test again?
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