diff options
| author | David Brownell <david-b@pacbell.net> | 2006-08-04 20:31:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-09-27 20:58:48 +0200 |
| commit | d413984ae936fad46678403b38d79c595e5aaafe (patch) | |
| tree | f494a450d7289d941e3ca2b2e33bfacc29cac024 /drivers/usb/host/ohci-au1xxx.c | |
| parent | USB doc patch 2 (diff) | |
| download | linux-d413984ae936fad46678403b38d79c595e5aaafe.tar.xz linux-d413984ae936fad46678403b38d79c595e5aaafe.zip | |
USB: OHCI avoids root hub timer polling
This teaches OHCI to use the root hub status change (RHSC) IRQ, bypassing
root hub timers most of the time and switching over to the "new" root hub
polling scheme. It's complicated by the fact that implementations of OHCI
trigger and ack that IRQ differently (the spec is vague there).
Avoiding root hub timers helps mechanisms like "dynamic tick" leave the
CPU in lowpower modes for longer intervals.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ohci-au1xxx.c')
| -rw-r--r-- | drivers/usb/host/ohci-au1xxx.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c index f7a975d5db09..44ed3a4c01ef 100644 --- a/drivers/usb/host/ohci-au1xxx.c +++ b/drivers/usb/host/ohci-au1xxx.c @@ -268,10 +268,6 @@ static const struct hc_driver ohci_au1xxx_hc_driver = { * basic lifecycle operations */ .start = ohci_au1xxx_start, -#ifdef CONFIG_PM - /* suspend: ohci_au1xxx_suspend, -- tbd */ - /* resume: ohci_au1xxx_resume, -- tbd */ -#endif /*CONFIG_PM*/ .stop = ohci_stop, /* @@ -291,6 +287,7 @@ static const struct hc_driver ohci_au1xxx_hc_driver = { */ .hub_status_data = ohci_hub_status_data, .hub_control = ohci_hub_control, + .hub_irq_enable = ohci_rhsc_enable, #ifdef CONFIG_PM .bus_suspend = ohci_bus_suspend, .bus_resume = ohci_bus_resume, |