From: Steev Klimaszewski <steev@kali.org>
To: Saravana Kannan <saravanak@google.com>,
John Stultz <john.stultz@linaro.org>
Cc: CC Hwang <cc.hwang@mediatek.com>,
Jason Cooper <jason@lakedaemon.net>,
Marc Zyngier <maz@kernel.org>,
Hanks Chen <hanks.chen@mediatek.com>,
Loda Chou <loda.chou@mediatek.com>,
lkml <linux-kernel@vger.kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Andy Gross <agross@kernel.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@lists.infradead.org>,
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Android Kernel Team <kernel-team@android.com>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v3 2/4] irqchip/qcom-pdc: Switch to using IRQCHIP_PLATFORM_DRIVER helper macros
Date: Wed, 5 Aug 2020 16:16:37 -0500 [thread overview]
Message-ID: <f314b687-11a9-5a5e-e79e-c46dd2f16c6f@kali.org> (raw)
In-Reply-To: <CAGETcx_rkK3-bKhDP_N4n_WyXLXFPoaUV9rbY_Y+H1Joj=dCyw@mail.gmail.com>
On 8/5/20 3:19 PM, Saravana Kannan wrote:
> On Wed, Aug 5, 2020 at 12:44 AM John Stultz <john.stultz@linaro.org> wrote:
>> <sigh>
>> So this is where I bashfully admit I didn't get a chance to try this
>> patch series out, as I had success with a much older version of
>> Saravana's macro magic.
>>
>> But unfortunately, now that this has landed in mainline, I'm seeing
>> boot regressions on db845c. :( This is in the non-modular case,
>> building the driver in.
> Does that mean the modular version is working? Or you haven't tried
> that yet? I'll wait for your reply before I try to fix it. I don't
> have the hardware, but it should be easy to guess this issue looking
> at the code delta.
For what it's worth, I saw this too on the Lenovo C630 (started on -next
around 20200727, but I didn't track it down as, well, there's less way
to get debug output on the C630.
In my testing, module or built-in doesn't matter, but reverting does
allow me to boot again.
> The only significant change from what your probe function is doing is
> this snippet. But it'd be surprising if this only affects the builtin
> case.
>
> + if (par_np == np)
> + par_np = NULL;
> +
> + /*
> + * If there's a parent interrupt controller and none of the parent irq
> + * domains have been registered, that means the parent interrupt
> + * controller has not been initialized yet. it's not time for this
> + * interrupt controller to initialize. So, defer probe of this
> + * interrupt controller. The actual initialization callback of this
> + * interrupt controller can check for specific domains as necessary.
> + */
> + if (par_np && !irq_find_matching_host(np, DOMAIN_BUS_ANY))
> + return -EPROBE_DEFER;
>
>> I managed to bisect it down to this patch, and reverting it avoids the
>> issue. I don't see what is wrong right off, but I really need to get
>> to bed, so I'll dig further tomorrow.
>>
>> Saravana: Apologies for not getting around to testing this beforehand!
> No worries. Apologies for breaking it accidentally.
>
> -Saravana
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next prev parent reply other threads:[~2020-08-05 21:18 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-18 0:06 [PATCH v3 0/4] irqchip: Add IRQCHIP_PLATFORM_DRIVER helper macros Saravana Kannan
2020-07-18 0:06 ` [PATCH v3 1/4] irqchip: Add IRQCHIP_PLATFORM_DRIVER_BEGIN/END and IRQCHIP_MATCH " Saravana Kannan
2020-07-18 0:06 ` [PATCH v3 2/4] irqchip/qcom-pdc: Switch to using IRQCHIP_PLATFORM_DRIVER " Saravana Kannan
2020-08-05 7:44 ` John Stultz
2020-08-05 20:19 ` Saravana Kannan
2020-08-05 21:16 ` Steev Klimaszewski [this message]
2020-08-05 21:47 ` Steev Klimaszewski
2020-08-05 21:57 ` John Stultz
2020-08-07 0:40 ` Bjorn Andersson
2020-08-07 1:22 ` John Stultz
2020-08-07 1:39 ` Bjorn Andersson
2020-08-07 2:48 ` John Stultz
2020-08-07 3:02 ` Saravana Kannan
2020-08-07 3:09 ` John Stultz
2020-08-07 3:12 ` Saravana Kannan
2020-08-07 5:58 ` Bjorn Andersson
2020-08-07 6:22 ` Saravana Kannan
2020-08-06 1:24 ` John Stultz
2020-08-06 8:49 ` Marc Zyngier
2020-08-06 18:05 ` Saravana Kannan
2020-08-06 19:59 ` Marc Zyngier
2020-08-06 20:09 ` John Stultz
2020-08-06 20:31 ` Marc Zyngier
2020-08-06 21:16 ` Saravana Kannan
2020-07-18 0:06 ` [PATCH v3 3/4] irqchip/mtk-sysirq: Convert to a platform driver Saravana Kannan
2020-07-23 11:42 ` Hanks Chen
2020-07-18 0:06 ` [PATCH v3 4/4] irqchip/mtk-cirq: " Saravana Kannan
2020-07-23 11:46 ` Hanks Chen
2020-07-23 17:37 ` Saravana Kannan
2020-07-25 14:23 ` [PATCH v3 0/4] irqchip: Add IRQCHIP_PLATFORM_DRIVER helper macros Marc Zyngier
2020-07-26 3:58 ` Saravana Kannan
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