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USB patch revert for 3.9-rc1

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Here is one remaining USB patch for 3.9-rc1, it reverts a 3.8 patch that has
 caused a lot of regressions for some VIA EHCI controllers.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB patch revert from Greg Kroah-Hartman:
 "Here is one remaining USB patch for 3.9-rc1, it reverts a 3.8 patch
  that has caused a lot of regressions for some VIA EHCI controllers."

* tag 'usb-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: EHCI: revert "remove ASS/PSS polling timeout"
This commit is contained in:
Linus Torvalds 2013-03-03 10:24:57 -08:00
commit bc2e4a90d9
1 changed files with 14 additions and 15 deletions
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29
drivers/usb/host/ehci-timer.c
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@ -113,15 +113,14 @@ static void ehci_poll_ASS(struct ehci_hcd *ehci)
if (want != actual) {
/* Poll again later */
ehci_enable_event(ehci, EHCI_HRTIMER_POLL_ASS, true);
++ehci->ASS_poll_count;
return;
/* Poll again later, but give up after about 20 ms */
if (ehci->ASS_poll_count++ < 20) {
ehci_enable_event(ehci, EHCI_HRTIMER_POLL_ASS, true);
return;
}
ehci_dbg(ehci, "Waited too long for the async schedule status (%x/%x), giving up\n",
want, actual);
}
if (ehci->ASS_poll_count > 20)
ehci_dbg(ehci, "ASS poll count reached %d\n",
ehci->ASS_poll_count);
ehci->ASS_poll_count = 0;
/* The status is up-to-date; restart or stop the schedule as needed */
@ -160,14 +159,14 @@ static void ehci_poll_PSS(struct ehci_hcd *ehci)
if (want != actual) {
/* Poll again later */
ehci_enable_event(ehci, EHCI_HRTIMER_POLL_PSS, true);
return;
/* Poll again later, but give up after about 20 ms */
if (ehci->PSS_poll_count++ < 20) {
ehci_enable_event(ehci, EHCI_HRTIMER_POLL_PSS, true);
return;
}
ehci_dbg(ehci, "Waited too long for the periodic schedule status (%x/%x), giving up\n",
want, actual);
}
if (ehci->PSS_poll_count > 20)
ehci_dbg(ehci, "PSS poll count reached %d\n",
ehci->PSS_poll_count);
ehci->PSS_poll_count = 0;
/* The status is up-to-date; restart or stop the schedule as needed */