From: Larry Finger <Larry.Finger@lwfinger.net>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-usb@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
ierturk@ieee.org
Subject: Re: Strange problem with USB device
Date: Tue, 8 Jun 2021 15:56:11 -0500 [thread overview]
Message-ID: <960057be-ef17-49e7-adba-ba2929d3a01f@lwfinger.net> (raw)
In-Reply-To: <20210608185314.GB1812516@rowland.harvard.edu>
On 6/8/21 1:53 PM, Alan Stern wrote:
> I don't get it. If this is a PCIe device, why should it appear
> on a USB bus? Wouldn't you expect it to show up as a PCI device
> on a PCI bus instead?
>
I do not know the internal details, but Realtek packages a PCIe wifi device and
a bluetooth USB device in the same package. Intel does the same thing on my
Wireless 7260.
My lsusb shows:
Bus 003 Device 002: ID 8087:8000 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 004: ID 8087:07dc Intel Corp. Bluetooth wireless interface
Bus 002 Device 003: ID 0bda:c822 Realtek Semiconductor Corp. Bluetooth Radio
Bus 002 Device 002: ID 04f2:b3b2 Chicony Electronics Co., Ltd TOSHIBA Web Camera
- FHD
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
I have no devices plugged into a USB port.
Larry
next prev parent reply other threads:[~2021-06-08 20:56 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-08 17:41 Strange problem with USB device Larry Finger
2021-06-08 17:57 ` Greg KH
2021-06-08 18:31 ` Larry Finger
2021-06-08 18:20 ` Alan Stern
2021-06-08 18:37 ` Larry Finger
2021-06-08 18:53 ` Alan Stern
2021-06-08 20:56 ` Larry Finger [this message]
2021-06-09 2:12 ` Alan Stern
2021-06-11 0:08 ` Ibrahim Erturk
2021-06-11 2:13 ` Alan Stern
2021-06-08 23:35 ` Larry Finger
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