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From: Mathias Nyman <>
To: Alan Stern <>
Cc: Kishon Vijay Abraham I <>,
	Mathias Nyman <>,,
	Greg Kroah-Hartman <>,
	"" <>,
	Lokesh Vutla <>
Subject: Re: [QUERY] Cold plugged USB device to Inateck PCIE USB card is not detected
Date: Fri, 20 Aug 2021 11:26:52 +0300	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On 19.8.2021 18.09, Alan Stern wrote:
> On Thu, Aug 19, 2021 at 04:18:12PM +0300, Mathias Nyman wrote:
>> On 19.8.2021 10.54, Kishon Vijay Abraham I wrote:
>>> Hi All,
>>> I was trying to test PCIe USB card (Inateck) connected to AM64 EVM and
>>> J7200 EVM. Inateck uses Renesas uPD720201 USB3 host controller.
>>> So if I connect USB pendrive and then boot the board (cold plug), I
>>> don't see the pendrive getting detected. But if I remove and plug it
>>> again, it gets detected.
>>> For the cold plug case, I see this message
>>> 	"usb usb1-port3: couldn't allocate usb_device"
>>> It actually fails in
>>> xhci_alloc_dev()->xhci_queue_slot_control()->queue_command()->XHCI_STATE_HALTED
>>> I'm not familiar with xhci but it looks like port event is invoked
>>> before the controller is fully initialized (?).
>> Maybe this controller is capable of generating interrupts before it's running?
> Mathias and Kishon:
> Note that this issue has also been reported in Bugzilla:


I'll follow up on that one.


  reply	other threads:[~2021-08-20  8:24 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-19  7:54 [QUERY] Cold plugged USB device to Inateck PCIE USB card is not detected Kishon Vijay Abraham I
2021-08-19 13:18 ` Mathias Nyman
2021-08-19 15:09   ` Alan Stern
2021-08-20  8:26     ` Mathias Nyman [this message]
2021-08-20 12:18   ` Kishon Vijay Abraham I

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