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| H A D | ehci-hcd.c | diff bc337b51508beb2d039aff5074a76cfe1c212030 Wed Aug 03 11:51:54 CEST 2016 Marc Ohlf <ohlf@mkt-sys.de> usb: ehci: change order of register cleanup during shutdown
In ehci_turn_off_all_ports() all EHCI port registers are cleared to zero.
On some hardware, this can lead to an system hang,
when ehci_port_power() accesses the already cleared registers.
This patch changes the order of cleanup.
First call ehci_port_power() which respects the current bits in
port status registers
and afterwards cleanup the hard way by setting everything to zero.
Signed-off-by: Marc Ohlf <ohlf@mkt-sys.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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