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From: Ferry Toth <fntoth@gmail.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Linux PCI <linux-pci@vger.kernel.org>,
	Linux ACPI <linux-acpi@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Bjorn Helgaas <helgaas@kernel.org>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: Re: [PATCH v2 2/7] PCI: ACPI: PM: Do not use pci_platform_pm_ops for ACPI
Date: Thu, 23 Sep 2021 22:32:39 +0200	[thread overview]
Message-ID: <d151c91c-cb65-2830-2453-a02057137400@gmail.com> (raw)
In-Reply-To: <ab803fb5-045d-98dd-2754-688a916f8944@gmail.com>

Hi

Op 23-09-2021 om 15:51 schreef Ferry Toth:
> Repost (with formatting removed, sorry for the noise)
> Op 23-09-2021 om 13:30 schreef Rafael J. Wysocki:
>> On Wed, Sep 22, 2021 at 11:31 PM Ferry Toth<fntoth@gmail.com>  wrote:
>>> Hi,
>>> Op 20-09-2021 om 21:17 schreef Rafael J. Wysocki:
>>>> From: Rafael J. Wysocki<rafael.j.wysocki@intel.com>
>>>>
>>>> Using struct pci_platform_pm_ops for ACPI adds unnecessary
>>>> indirection to the interactions between the PCI core and ACPI PM,
>>>> which is also subject to retpolines.
>>>>
>>>> Moreover, it is not particularly clear from the current code that,
>>>> as far as PCI PM is concerned, "platform" really means just ACPI
>>>> except for the special casess when Intel MID PCI PM is used or when
>>>> ACPI support is disabled (through the kernel config or command line,
>>>> or because there are no usable ACPI tables on the system).
>>>>
>>>> To address the above, rework the PCI PM code to invoke ACPI PM
>>>> functions directly as needed and drop the acpi_pci_platform_pm
>>>> object that is not necessary any more.
>>>>
>>>> Accordingly, update some of the ACPI PM functions in question to do
>>>> extra checks in case the ACPI support is disabled (which previously
>>>> was taken care of by avoiding to set the pci_platform_ops pointer
>>>> in those cases).
>>>>
>>>> Signed-off-by: Rafael J. Wysocki<rafael.j.wysocki@intel.com>
>>>> ---
>>>>
>>>> v1 -> v2:
>>>>       * Rebase on top of the new [1/7] and move dropping struct
>>>>         pci_platform_pm_ops to a separate patch.
>>> I wanted to test this series on 5.15-rc2 but this patch 2/7 doesn't
>>> apply (after 1/7 applied). Should I apply this on another tree?
>> This is on top of
>> https://patchwork.kernel.org/project/linux-acpi/patch/2793105.e9J7NaK4W3@kreacher/ 
>>
>> which is not yet in any tree.
>>
>> Sorry for the confusion.
> No problem at all. If I can I will try to report back tonight. Else, 
> will be delayed 2 due to a short break.

With those 3 extra patches followed by 7 from this series it builds. But 
on boot I get:
dwc3 dwc3.0.auto: this is not a DesignWare USB3 DRD Core
Then after this it reboots. Nothing in the logs. Nothing else on 
console, I guess something goes wrong early.

I tried both in host / device mode - no change.

Normally in host mode I have:
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, 
bcdDevice= 5.14
Only ref to dwc3 is:
tusb1210 dwc3.0.auto.ulpi: using ACPI for GPIO lookup / using lookup 
tables for GPIO lookup / No GPIO consumer cs found

  reply	other threads:[~2021-09-23 20:32 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-20 18:52 [PATCH v2 0/7] PCI: ACPI: Get rid of struct pci_platform_pm_ops and clean up code Rafael J. Wysocki
2021-09-20 19:16 ` [PATCH v2 1/7] PCI: PM: Do not use pci_platform_pm_ops for Intel MID PM Rafael J. Wysocki
2021-09-20 19:17 ` [PATCH v2 2/7] PCI: ACPI: PM: Do not use pci_platform_pm_ops for ACPI Rafael J. Wysocki
2021-09-22 21:30   ` Ferry Toth
2021-09-23 11:30     ` Rafael J. Wysocki
     [not found]       ` <013e3a7b-ec67-1a67-c2b9-e1fbb11c664e@gmail.com>
2021-09-23 13:35         ` Rafael J. Wysocki
2021-09-23 13:51       ` Ferry Toth
2021-09-23 20:32         ` Ferry Toth [this message]
2021-09-24 12:02           ` Rafael J. Wysocki
2021-09-24 14:52             ` Ferry Toth
2021-09-24 21:17             ` Ferry Toth
2021-09-27 13:46               ` Rafael J. Wysocki
2021-09-29 19:08   ` Nathan Chancellor
2021-09-29 19:13     ` Rafael J. Wysocki
2021-09-29 19:13       ` Rafael J. Wysocki
2021-09-20 19:17 ` [PATCH v2 3/7] PCI: PM: Drop struct pci_platform_pm_ops Rafael J. Wysocki
2021-09-20 19:17 ` [PATCH v2 4/7] PCI: PM: Rearrange pci_target_state() Rafael J. Wysocki
2021-09-20 19:17 ` [PATCH v2 5/7] PCI: PM: Make pci_choose_state() call pci_target_state() Rafael J. Wysocki
2021-09-20 19:17 ` [PATCH v2 6/7] PCI: PM: Do not call platform_pci_power_manageable() unnecessarily Rafael J. Wysocki
2021-09-20 19:17 ` [PATCH v2 7/7] PCI: PM: Simplify acpi_pci_power_manageable() Rafael J. Wysocki
2021-09-28 23:28 ` [PATCH v2 0/7] PCI: ACPI: Get rid of struct pci_platform_pm_ops and clean up code Bjorn Helgaas
2021-09-29 12:00   ` Rafael J. Wysocki
2021-09-29 15:07     ` Bjorn Helgaas
2021-09-29 17:14   ` Ferry Toth
2021-09-29 18:05 ` [PATCH v3 0/3] PCI: PM: Simplify and unify some helper functions Rafael J. Wysocki
2021-09-29 18:09   ` [PATCH v3 1/3] PCI: PM: Rearrange pci_target_state() Rafael J. Wysocki
2021-09-29 18:11   ` [PATCH v3 2/3] PCI: PM: Make pci_choose_state() call pci_target_state() Rafael J. Wysocki
2021-09-29 18:15   ` [PATCH v3 3/3] PCI: PM: Do not call platform_pci_power_manageable() unnecessarily Rafael J. Wysocki
2021-10-03 20:14   ` [PATCH v3 0/3] PCI: PM: Simplify and unify some helper functions Ferry Toth
2021-10-05 11:03     ` Rafael J. Wysocki

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