USB: EHCI update VIA workaround
commit26f953fd884ea4879585287917f855c63c6b2666
authorDavid Brownell <david-b@pacbell.net>
Tue, 19 Sep 2006 00:03:16 +0000 (18 17:03 -0700)
committerGreg Kroah-Hartman <gregkh@suse.de>
Wed, 27 Sep 2006 18:59:00 +0000 (27 11:59 -0700)
tree78e6bd71dc1bb4089bc8589eb995765d64d4797d
parent353a4098c61272b33a02ec5802fb3859fec91a0e
USB: EHCI update VIA workaround

This revamps handling of the hardware "async advance" IRQ, and its watchdog
timer.  Basically it dis-entangles that important timeout from the others,
simplifying the associated state and code to make it more robust.

This reportedly improves behavior of EHCI on some systems with VIA chips,
and AFAIK won't affect non-VIA hardware.  VIA systems need this code to
recover from silcon bugs whereby the "async advance" IRQ isn't issued.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/host/ehci-dbg.c
drivers/usb/host/ehci-hcd.c
drivers/usb/host/ehci-hub.c
drivers/usb/host/ehci-pci.c
drivers/usb/host/ehci-q.c
drivers/usb/host/ehci.h