commit 727afe75ef752829158e906c5b86991478fece53
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Sun Sep 6 23:05:09 2009 -0700
USB - Formalize polling mode and fix ohci interrupt storm
* Formalize entering and leaving polling mode via usb_set_polling().
* Call bus->methods->do_poll() once when leaving polling mode to
catch-up any lost interrupts.
* OHCI now acknowledges interrupts from the interrupt handler when
it finds itself in polling mode to prevent the interrupt from
storming. The interrupts are recorded for later use.
Summary of changes:
sys/bus/usb/ehci.c | 21 +++++++++++-----
sys/bus/usb/ohci.c | 51 ++++++++++++++++++++++++++++++----------
sys/bus/usb/ohcivar.h | 1 +
sys/bus/usb/uhci.c | 21 +++++++++++-----
sys/bus/usb/usb.c | 8 +++---
sys/bus/usb/usbdi.c | 30 +++++++++++++++++-------
sys/bus/usb/usbdi.h | 2 +-
sys/bus/usb/usbdivar.h | 2 +-
sys/dev/usbmisc/ukbd/ukbd.c | 7 +++--
sys/dev/usbmisc/umass/umass.c | 5 ++-
10 files changed, 101 insertions(+), 47 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/727afe75ef752829158e906c5b86991478fece53
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DragonFly BSD source repository