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From: Bing Fan <hptsfb@gmail.com>
To: Robin Murphy <robin.murphy@arm.com>,
	Qian Cai <quic_qiancai@quicinc.com>,
	gregkh@linuxfoundation.org, Bing Fan <tombinfan@tencent.com>
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
	Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v5] arm pl011 serial: support multi-irq request
Date: Tue, 27 Jul 2021 10:57:09 +0800	[thread overview]
Message-ID: <bddf2712-72f4-2e20-da17-33b3de08f769@gmail.com> (raw)
In-Reply-To: <e98962f3-9232-4abf-ec27-a7524a9e786d@arm.com>

hello,

Thanks very much for analysis. And i have get the cause of the problem.

I will add pl011_allocate_multi_irqs/pl011_release_multi_irqs functions 
for amba drivers,

and call them in pl011_startup/pl011_shutdown respectively.


Reserved pl011_allocate_irq/pl011_release_irq functions for platform 
drivers.

Please help to confirm, is this ok?





在 7/27/2021 5:14, Robin Murphy 写道:
> On 2021-07-26 21:56, Qian Cai wrote:
>>
>>
>> On 7/26/2021 4:36 PM, Robin Murphy wrote:
>>> The important point you're missing, but which the KASAN dump does 
>>> hint at, is
>>> that that is a machine with SBSA generic UARTs booting via ACPI - I 
>>> know it
>>> doesn't do DT at all because I have one too. What matters there is 
>>> that pl011
>>> binds as a platform driver, *not* an amba driver.
>>
>> Thanks for pointing out, Robin. I just yet to see an ARM server 
>> booting from DT
>> those days.
>
> Unlikely in production datacentre/cloud environments, indeed, although 
> some of the mid-range kit like LX2160 does start to blur the line of 
> what might be considered "server", and that's one example which *does* 
> have full-featured DT support (even if it also aspires to ACPI...)
>
> What I thought was worth clarifying for the general audience is that 
> the relevant aspects of "server" here should in fact still be possible 
> to reproduce on something like a Raspberry Pi or a tiny QEMU VM, if 
> one can figure out the ACPI runes :)
>
> Thanks,
> Robin.

  reply	other threads:[~2021-07-27  2:57 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-01  1:38 Bing Fan
2021-07-23 16:47 ` Qian Cai
2021-07-26  7:17   ` Bing Fan
2021-07-26 16:39     ` Qian Cai
2021-07-26 20:36       ` Robin Murphy
2021-07-26 20:56         ` Qian Cai
2021-07-26 21:14           ` Robin Murphy
2021-07-27  2:57             ` Bing Fan [this message]
2021-08-12 14:31               ` Qian Cai
     [not found]                 ` <67cd6c830e33491e99ea4d2480f4a89d@tencent.com>
     [not found]                   ` <09918b566884413898f63b92ddd037a0@tencent.com>
2021-08-13 13:42                     ` [Internet]Re: " Qian Cai
2021-08-13 15:01                       ` gregkh
2021-08-13 15:09                         ` Robin Murphy
2021-08-13 15:14                           ` gregkh
2021-08-13 15:28                             ` Qian Cai

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