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From: Otto Meier <gf435@gmx.net>
To: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: linux-amlogic@lists.infradead.org
Subject: Re: [BUG]odroid-c2 does not hotplug usb-devices
Date: Sat, 5 Dec 2020 18:40:14 +0100	[thread overview]
Message-ID: <8afb2adb-4581-a847-e7e0-db1e915e9247@gmx.net> (raw)
In-Reply-To: <CAFBinCDrMj4GP2cy4dBSt_isGXf4CuhmDz=uAs+gZwUGQc=o6A@mail.gmail.com>

Hi Martin,

i have tried your second notice. but it does'nt solve the issue.
if at leased on device is pluged in new devices are detected. if
all devices have been removed, no new device will be detected anymore.

Best regards

Otto

Am 05.12.20 um 12:54 schrieb Martin Blumenstingl:
> Hi Otto,
>
> On Sat, Nov 28, 2020 at 6:10 PM Otto Meier <gf435@gmx.net> wrote:
>> Hello,
>>
>> I run an Odroid-c2 with newest kernel 5.10.0-rc5
>> usb recognises usb devices only when they are plugged in before boot.
>> after boot plugged in devices get not recognized.
>>
>> Any idea where to search for a fix?
> there are two answers to this:
> - this was fixed two years ago with upstream commit cc10ce0c51b13d [0]
> - I think it broke again. off-list I received a hint from a user that
> setting kernel cmdline parameter usbcore.autosuspend=-1 works around
> this issue. can you please try this? if it fixes USB hotplug for you
> then this needs to be reported to the USB maintainers
>
>
> Best regards
> Martin
>
>
> [0] https://github.com/torvalds/linux/commit/cc10ce0c51b13d1566d0ec1dcb472fb86330b391
>


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  reply	other threads:[~2020-12-05 17:40 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-28 17:09 Otto Meier
2020-12-05 11:54 ` Martin Blumenstingl
2020-12-05 17:40   ` Otto Meier [this message]
2020-12-05 19:55     ` Martin Blumenstingl
2020-12-07 12:19       ` Otto Meier
2020-12-07 12:29         ` Neil Armstrong
2020-12-07 12:43           ` Otto Meier
2020-12-13 18:46             ` Martin Blumenstingl
2020-12-14 19:33               ` Otto Meier
2020-12-19 13:58                 ` Martin Blumenstingl
2020-12-19 18:41                   ` Otto Meier
2020-12-19 19:53                   ` Anand Moon
2020-12-19 22:31                     ` Martin Blumenstingl
2020-12-20 10:28                       ` Otto Meier
2020-12-20 13:46                       ` Anand Moon
2020-12-20 14:33                         ` Martin Blumenstingl
2020-12-21 14:15                           ` Anand Moon

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