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Commit 85550f91 authored by Jelle Martijn Kok's avatar Jelle Martijn Kok Committed by Greg Kroah-Hartman
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usb: ohci-at91: Do not drop unhandled USB suspend control requests



In patch 2e2aa1bc7eff90ecm, USB suspend and wakeup control requests are
passed to SFR_OHCIICR register. If a processor does not have such a
register, this hub control request will be dropped.

If no such a SFR register is available, all USB suspend control requests
will now be processed using ohci_hub_control()
(like before patch 2e2aa1bc7eff90ecm.)

Tested on an Atmel AT91SAM9G20 with an on-board TI TUSB2046B hub chip
If the last USB device is unplugged from the USB hub, the hub goes into
sleep and will not wakeup when an USB devices is inserted.

Fixes: 2e2aa1bc ("usb: ohci-at91: Forcibly suspend ports while USB suspend")
Signed-off-by: default avatarJelle Martijn Kok <jmkok@youcom.nl>
Tested-by: default avatarWenyou Yang <wenyou.yang@atmel.com>
Cc: Wenyou Yang <wenyou.yang@atmel.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 88767cc1
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