[PASEMI] Nemo board doesn't recognize any ATA disks with the pci-v5.16 updates

[Christian Zigotzky]

Am 12.11.21 um 15:46 schrieb Marc Zyngier:
> On Fri, 12 Nov 2021 14:15:18 +0000,
> Christian Zigotzky <chzigotzky at xenosoft.de> wrote:
>> On 12 November 2021 at 02:41 pm, Marc Zyngier wrote:
>>> On Fri, 12 Nov 2021 09:40:30 +0000,
>>> Christian Zigotzky <chzigotzky at xenosoft.de> wrote:
>>>> On 11 November 2021 at 06:39 pm, Marc Zyngier wrote:
>>>>> On Wed, 10 Nov 2021 18:07:24 +0000,
>>>>> Christian Zigotzky <chzigotzky at xenosoft.de> wrote:
>>>>>> On 09 November 2021 at 03:45 pm, Christian Zigotzky wrote:
>>>>>>> Hello,
>>>>>>>
>>>>>>> The Nemo board [1] doesn't recognize any ATA disks with the
>>>>>> pci-v5.16 updates [2].
>>>>>>> Error messages:
>>>>>>>
>>>>>>> ata4.00: gc timeout cmd 0xec
>>>>>>> ata4.00: failed to IDENTIFY (I/O error, error_mask=0x4)
>>>>>>> ata1.00: gc timeout cmd 0xec
>>>>>>> ata1.00: failed to IDENTIFY (I/O error, error_mask=0x4)
>>>>>>> ata3.00: gc timeout cmd 0xec
>>>>>>> ata3.00: failed to IDENTIFY (I/O error, error_mask=0x4)
>>>>>>>
>>>>>>> I was able to revert the new pci-v5.16 updates [2]. After a new
>>>>>> compiling, the kernel recognize all ATA disks correctly.
>>>>>>> Could you please check the pci-v5.16 updates [2]?
>>>>>>>
>>>>>>> Please find attached the kernel config.
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Christian
>>>>>>>
>>>>>>> [1] https://en.wikipedia.org/wiki/AmigaOne_X1000
>>>>>>> [2]
>>>>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0c5c62ddf88c34bc83b66e4ac9beb2bb0e1887d4
>>>>>>
>>>>>> Hi All,
>>>>>>
>>>>>> Many thanks for your nice responses.
>>>>>>
>>>>>> I bisected today [1]. 0412841812265734c306ba5ef8088bcb64d5d3bd
>>>>>> (of/irq: Allow matching of an interrupt-map local to an interrupt
>>>>>> controller) [2] is the first bad commit.
>>>>> Can you please give the following hack a go and post the result
>>>>> (including the full dmesg)?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> 	M.
>>>>> diff --git a/drivers/of/irq.c b/drivers/of/irq.c
>>>>> index 32be5a03951f..8cf0cc9b7caf 100644
>>>>> --- a/drivers/of/irq.c
>>>>> +++ b/drivers/of/irq.c
>>>>> @@ -156,14 +156,15 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
>>>>>       	/* Now start the actual "proper" walk of the interrupt tree */
>>>>>     	while (ipar != NULL) {
>>>>> +		bool intc = of_property_read_bool(ipar, "interrupt-controller");
>>>>> +
>>>>>     		/*
>>>>>     		 * Now check if cursor is an interrupt-controller and
>>>>>     		 * if it is then we are done, unless there is an
>>>>>     		 * interrupt-map which takes precedence.
>>>>>     		 */
>>>>>     		imap = of_get_property(ipar, "interrupt-map", &imaplen);
>>>>> -		if (imap == NULL &&
>>>>> -		    of_property_read_bool(ipar, "interrupt-controller")) {
>>>>> +		if (imap == NULL && intc) {
>>>>>     			pr_debug(" -> got it !\n");
>>>>>     			return 0;
>>>>>     		}
>>>>> @@ -244,8 +245,14 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
>>>>>       			pr_debug(" -> imaplen=%d\n", imaplen);
>>>>>     		}
>>>>> -		if (!match)
>>>>> +		if (!match) {
>>>>> +			if (intc) {
>>>>> +				pr_info("%pOF interrupt-map failed, using interrupt-controller\n", ipar);
>>>>> +				return 0;
>>>>> +			}
>>>>> +
>>>>>     			goto fail;
>>>>> +		}
>>>>>       		/*
>>>>>     		 * Successfully parsed an interrrupt-map translation; copy new
>>>>>
>>>> The detecting of the ATA disks works with this patch! Well done!
>>>> Thanks a lot!
>>> Thanks for testing it. I'll turn that into a proper patch.
>>>
>>> 	M.
>>>
>> Could you please explain your patch?
> Please refer to the commit message[1].
>
>> I am not a developer. I work for the A-EON Linux FLS.
> I have no idea what this is, unfortunately.
>
> 	M.
>
> [1] https://lore.kernel.org/r/20211112143644.434995-1-maz@kernel.org
>
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I have to explain to our customer why the kernel doesn't their ATA disk 
anymore. :-D But it is fixed and I don't need to explain it.

Thanks a lot for your help.

- Christian