From: Oliver Neukum <oneukum@suse.com>
To: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>
Subject: Re: ttyACM: disabled by hub (EMI?), re-enabling... Causes garbage chars & disconnect
Date: Tue, 26 May 2020 10:47:33 +0200 [thread overview]
Message-ID: <1590482853.2838.26.camel@suse.com> (raw)
In-Reply-To: <a3f4a9bbde9efd2827b2a02c46f86c8ba7853bc6.camel@infinera.com>
Am Montag, den 25.05.2020, 16:49 +0000 schrieb Joakim Tjernlund:
> To be clear, I can pull the cable and put it back and there are no garbage chars.
> There is also this error:
> [Wed May 20 14:03:25 2020] cdc_acm 1-6.3:1.1: acm_ctrl_irq - usb_submit_urb failed: -19
> [Wed May 20 14:03:25 2020] usb 1-6-port2: attempt power cycle
> [Wed May 20 14:03:26 2020] usb 1-6.3: USB disconnect, device number 86
> [Wed May 20 14:03:26 2020] cdc_acm 1-6.3:1.1: failed to set dtr/rts
>
> Should not this auto reenable emulate reattaching the USB cable?
Hi,
yes it should. You find the garage characters after the EMI event. How
sure are you that they arrive after the event and not during the event?
Regards
Oliver
next prev parent reply other threads:[~2020-05-26 8:47 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-25 14:46 ttyACM: disabled by hub (EMI?), re-enabling... Causes garbage chars & disconnect Joakim Tjernlund
2020-05-25 15:02 ` Oliver Neukum
2020-05-25 15:15 ` Joakim Tjernlund
2020-05-25 16:49 ` Joakim Tjernlund
2020-05-26 8:47 ` Oliver Neukum [this message]
2020-05-26 8:59 ` Joakim Tjernlund
2020-05-26 10:14 ` Oliver Neukum
2020-05-26 16:46 ` Joakim Tjernlund
2020-05-26 17:19 ` Joakim Tjernlund
2020-05-27 8:38 ` Oliver Neukum
2020-05-27 9:40 ` Joakim Tjernlund
2020-05-27 10:12 ` Greg KH
2020-05-27 10:41 ` Oliver Neukum
2020-05-27 13:16 ` Joakim Tjernlund
2020-05-27 15:41 ` Joakim Tjernlund
2020-06-05 10:09 ` Joakim Tjernlund
2020-06-08 9:13 ` Oliver Neukum
2020-06-08 11:39 ` Joakim Tjernlund
2020-06-08 15:40 ` Oliver Neukum
2020-06-08 16:00 ` Joakim Tjernlund
2020-06-08 19:21 ` Oliver Neukum
2020-06-15 11:01 ` Joakim Tjernlund
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