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| author | Manuel Lauss <manuel.lauss@googlemail.com> | 2010-03-08 20:43:32 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-05-20 13:21:31 -0700 |
| commit | 9757de384451a606af8c722213cb973192cbbd1b (patch) | |
| tree | 33c7bf839d702d9c1a35ee68a8a6a96591bc1723 /drivers/usb/host | |
| parent | 0ede76fcec5415ef82a423a95120286895822e2d (diff) | |
| download | blackbird-op-linux-9757de384451a606af8c722213cb973192cbbd1b.tar.gz blackbird-op-linux-9757de384451a606af8c722213cb973192cbbd1b.zip | |
USB: ehci-au1xxx does not need EHCI IO watchdog
I've been running variations of this patch for well over a year now;
my usual zoo of test devices didn't trigger any ill effects even
under heavy load. As a nice sideeffect idle-wakeups are reduced
from 20/s to about 2/s (EHCI hub with mouse and kbd).
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/ehci-au1xxx.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c index e3a74e75e822..7a27b7c4ee84 100644 --- a/drivers/usb/host/ehci-au1xxx.c +++ b/drivers/usb/host/ehci-au1xxx.c @@ -69,6 +69,15 @@ static void au1xxx_stop_ehc(void) au_sync(); } +static int au1xxx_ehci_setup(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int ret = ehci_init(hcd); + + ehci->need_io_watchdog = 0; + return ret; +} + static const struct hc_driver ehci_au1xxx_hc_driver = { .description = hcd_name, .product_desc = "Au1xxx EHCI", @@ -86,7 +95,7 @@ static const struct hc_driver ehci_au1xxx_hc_driver = { * FIXME -- ehci_init() doesn't do enough here. * See ehci-ppc-soc for a complete implementation. */ - .reset = ehci_init, + .reset = au1xxx_ehci_setup, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, |
