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ehci: raise irq in the frame timer

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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>
This commit is contained in:
Gerd Hoffmann 2012-07-10 18:00:50 +02:00
parent 75f151cd27
commit f0ad01f92c
1 changed files with 2 additions and 2 deletions
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4
hw/usb/hcd-ehci.c
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@ -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)