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From: "M. Vefa Bicakci" <m.v.b@runbox.com>
To: Pany <pany@fedoraproject.org>
Cc: Alan Stern <stern@rowland.harvard.edu>,
	Bastien Nocera <hadess@hadess.net>,
	linux-usb@vger.kernel.org
Subject: Re: Bug caused by 53965c79c2db (USB: Fix device driver race)
Date: Wed, 21 Oct 2020 00:18:42 -0400	[thread overview]
Message-ID: <3fcc724f-5b5e-e441-fd12-31365d140773@runbox.com> (raw)
In-Reply-To: <CAE3RAxuX6SBKx22q6XZ7wTVYQNzJqZ=2Vsc4jOqK3V2-mgYOqQ@mail.gmail.com>

On 20/10/2020 23.17, Pany wrote:
> Thank you so much for guiding me!
> On Tue, Oct 20, 2020 at 12:04 PM M. Vefa Bicakci <m.v.b@runbox.com> wrote:
[Snipped by Vefa]
>> Pany, in the mean-time, could you add the following string to your kernel's
>> command line (i.e., via GRUB, or the actual boot-loader that you use) and
>> let us know whether it helps to *work around* this issue with the latest
>> versions of 5.8.y kernels?
>>
>>          module_blacklist=apple-mfi-fastcharge
> 
> And I also installed the official built kernel-5.8.15-201.fc32.x86_64.rpm [5].
> 
> Adding module_blacklist=apple-mfi-fastcharge to the GRUB entry did not
> succeed in the kernel booting.
> 
> With following kernel cmdline, I captured the journal [6]:
> 
> kernel: Command line:
> BOOT_IMAGE=(hd5,gpt3)/vmlinuz-5.8.15-201.fc32.x86_64
> root=/dev/mapper/fedora_localhost--live-root ro
> resume=/dev/mapper/fedora_localhost--live-swap
> rd.lvm.lv=fedora_localhost-live/root
> rd.luks.uuid=luks-65d9ed28-ea08-4ea5-a1dd-7b2b086f5e09
> rd.lvm.lv=fedora_localhost-live/swap
> module_blacklist=apple-mfi-fastcharge systemd.debug-shell=1

Hello Pany,

My apologies, the original kernel command line entry I mentioned was
incorrect; the module name needs to be specified with underscore characters
("_") instead of dash ("-") characters. Could you try the following as well?

   module_blacklist=apple_mfi_fastcharge

Using this string in the kernel command line causes "modprobe apple-mfi-fastcharge"
to fail with -EPERM on my system, and hence I am hoping that this should
at least unblock your day-to-day use of recent kernels.

Sorry again for the mistake in my earlier suggestion.

Vefa

  reply	other threads:[~2020-10-21  4:19 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-17 16:07 Bug caused by 53965c79c2db (USB: Fix device driver race) Pany
2020-10-17 20:02 ` Alan Stern
2020-10-19  9:36   ` Pany
2020-10-19 17:40     ` Alan Stern
2020-10-20 12:03       ` M. Vefa Bicakci
2020-10-20 15:28         ` Alan Stern
2020-10-21  4:18           ` M. Vefa Bicakci
2020-10-21 11:53             ` Bastien Nocera
2020-10-21 12:02               ` Bastien Nocera
2020-10-21 12:29                 ` Alan Stern
2020-10-21 12:31                   ` Bastien Nocera
2020-10-21 13:01                 ` Bastien Nocera
2020-10-21 13:08               ` M. Vefa Bicakci
2020-10-21 13:18                 ` Bastien Nocera
2020-10-21 13:21                   ` Bastien Nocera
2020-10-21 20:11                   ` Alan Stern
2020-10-21 20:49                     ` M. Vefa Bicakci
2020-10-21 20:49                   ` M. Vefa Bicakci
2020-10-22 13:55                     ` [PATCH 0/2] Patches to prevent re-probing all Apple USB devices on apple-mfi-fastcharge load M. Vefa Bicakci
2020-10-22 13:55                       ` [PATCH 1/2] usbcore: Check both id_table and match() when both available M. Vefa Bicakci
2020-10-22 13:59                         ` M. Vefa Bicakci
     [not found]                           ` <CAHp75VeBgQ2ywLzU5PZEdfS+9M_niD0KoiEG=UMNH+4cPfsCNw@mail.gmail.com>
2020-10-23 12:51                             ` M. Vefa Bicakci
2020-10-27 14:02                         ` Bastien Nocera
2020-10-28  4:00                           ` Pany
2020-10-29  3:33                             ` M. Vefa Bicakci
2020-10-29  5:35                               ` Pany
2020-10-22 13:55                       ` [PATCH 2/2] USB: apple-mfi-fastcharge: don't probe unhandled devices M. Vefa Bicakci
2020-10-27 14:02                         ` Bastien Nocera
2020-10-28  4:01                           ` Pany
2020-10-21  3:17         ` Bug caused by 53965c79c2db (USB: Fix device driver race) Pany
2020-10-21  4:18           ` M. Vefa Bicakci [this message]
2020-10-21  5:19             ` Pany

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