From mboxrd@z Thu Jan  1 00:00:00 1970
From: Hanjun Guo <hanjun.guo@linaro.org>
Subject: Re: [PATCH v3 2/8] ACPI / irqchip: Add self-probe infrastructure
 to initialize IRQ controller
Date: Mon, 20 Jul 2015 20:48:45 +0800
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To: Timur Tabi <timur@codeaurora.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>, Jason Cooper <jason@lakedaemon.net>, Will Deacon <will.deacon@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Wei Huang <wei@redhat.com>, Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>, Arnd Bergmann <arnd@arndb.de>, linaro-acpi@lists.linaro.org, lkml <linux-kernel@vger.kernel.org>, Tomasz Nowicki <tomasz.nowicki@linaro.org>, linux-acpi@vger.kernel.org, Mark Brown <broonie@kernel.org>, Grant Likely <grant.likely@linaro.org>, Thomas Gleixner <tglx@linutronix.de>, Jiang Liu <jiang.liu@linux.intel.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>

On 07/20/2015 08:12 PM, Timur Tabi wrote:
> Hanjun Guo wrote:
>>> Should we display an error message if we don't find a matching table?
>>> That can happen if the ACPI tables shows a GIC version number that is
>>> not listed in __irqchip_acpi_table[]?
>>
>> Hmm, did you get the error message like: "Invalid GIC version 5 in
>> MADT"? or just use ACPI_MADT_GIC_VERSION_V1 as the gic_version? if
>> the later one, it will show everything is fine, but failed to probe
>> the GIC.
>
> We had a bug in our ACPI tables that listed the GIC version as 1, and it
> failed to probe and then the kernel panicked.  It took me a while to
> figure out what was wrong, so I think it should print an error message
> that says that version X is unsupported.

OK, will do in next version, thanks for testing those patches!

Hanjun