On 4/19/22 11:20, Mahesh Vardhamanaiah wrote:
Hi HPS,
Please find the requested logs.
xhci0: MMV endpoint 3 state 2
xhci0: MMV Could not stop endpoint 3 err 12
xhci0: MMV endpoint 3 state 3
xhci0: MMV Could not stop endpoint 3 err 12
xhci0: MMV Could not reset endpoint 3 err 12
xhci0: MMV endpoint 3 state 2
xhci0: MMV Could not stop endpoint 3 err 12
xhci0: MMV endpoint 3 state 3
xhci0: MMV Could not stop endpoint 3 err 12
xhci0: MMV Could not reset endpoint 3 err 12
FreeBSD/arm (Amnesiac) (ttyu0)
login:
WARNING: User disconnection from this port.
Current number of users: 2
xhci0: MMV endpoint 3 state 2
xhci0: MMV Could not stop endpoint 3 err 12
xhci0: MMV endpoint 3 state 3
xhci0: MMV Could not stop endpoint 3 err 12
xhci0: MMV Could not reset endpoint 3 err 12
Thanks,
Mahesh
Hi Mahesh,
According to section 6.2.3 in the XHCI specification:
state 2 : Halted (SW shall issue a reset endpoint)
state 3 : stopped (The endpoint is not running)
err 12 : means USB_ERR_NO_PIPE, /* 12 */
Which is not a valid return code from xhci_do_command(). Can you check
where this value comes from?
BTW: I see a small bug in xhci_do_command(), that it doesn't wait if the
command ring is full when entering the function.
--HPS
