Revert "usb: dwc3: dwc3-omap: Disable/Enable only wrapper interrupts in prepare/complete"
authorRoger Quadros <rogerq@ti.com>
Tue, 7 Oct 2014 14:40:57 +0000 (09:40 -0500)
committerFelipe Balbi <balbi@ti.com>
Thu, 23 Oct 2014 14:55:41 +0000 (09:55 -0500)
commitb01ff5cb2fc99d45e4edc97077b6e17186570a16
tree37086d710f2f638ee00bfae172c9bbe4c6047c25
parenta6615937bcd9234e6d6bb817c3701fce44d0a84d
Revert "usb: dwc3: dwc3-omap: Disable/Enable only wrapper interrupts in prepare/complete"

This reverts commit 02dae36aa649a66c5c6181157ddd806e7b4913fc.

That commit is bogus in two ways:

1) There's no way dwc3-omap's ->suspend() can cause any effect
on xhci's ->suspend(). Linux device driver model guarantees
that a parent's ->suspend() will only be called after all
children are suspended. dwc3-omap is the parent of the
parent of xhci.

2) When implementing Deep Sleep states where context is lost,
USBOTGSS_IRQ0 register, well, looses context so we
_must_ rewrite it otherwise core IRQs will never be
reenabled and USB will appear to be dead.

Fixes: 02dae36 (usb: dwc3: dwc3-omap: Disable/Enable only
wrapper interrupts in prepare/complete)
Cc: <stable@vger.kernel.org> # v3.17
Cc: George Cherian <george.cherian@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
drivers/usb/dwc3/dwc3-omap.c