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authorGerd Hoffmann <kraxel@redhat.com>2012-07-10 18:00:50 +0200
committerGerd Hoffmann <kraxel@redhat.com>2012-07-12 15:00:50 +0200
commitf0ad01f92ca02eee7cadbfd225c5de753ebd5fce (patch)
tree98eef9f1c083fb78e51b989c4ae0a23a665e7973 /hw/usb
parent75f151cd271bb0fd3b3b871f1850a673d534e65e (diff)
ehci: raise irq in the frame timer
With the async schedule being kicked from other places than the frame timer (commit 0f588df8b3688b00e77aabaa32e26ece5f19bd39) it may happen that we call ehci_commit_interrupt() more than once per frame. Move the call from the async schedule handler to the frame timer to restore old irq behavior, which is more correct. Fixes regressions with some linux kernel versions. TODO: implement full Interrupt Threshold Control support. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb')
-rw-r--r--hw/usb/hcd-ehci.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index 080f62c00d..7c5f398a37 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -2208,8 +2208,6 @@ static void ehci_advance_state(EHCIState *ehci, int async)
}
}
while (again);
-
- ehci_commit_interrupt(ehci);
}
static void ehci_advance_async_state(EHCIState *ehci)
@@ -2389,6 +2387,8 @@ static void ehci_frame_timer(void *opaque)
if (schedules) {
qemu_mod_timer(ehci->frame_timer, expire_time);
}
+
+ ehci_commit_interrupt(ehci);
}
static void ehci_async_bh(void *opaque)