Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 9757de38 authored by Manuel Lauss's avatar Manuel Lauss Committed by Greg Kroah-Hartman
Browse files

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: default avatarManuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 0ede76fc

drivers/usb/host/ehci-au1xxx.c

+10 −1
Original line number Diff line number Diff line
@@ -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,