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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-03-03 19:24:57 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-03-03 19:24:57 +0100 |
| commit | bc2e4a90d9f75f1664c1587eb09ecd10bb71b022 (patch) | |
| tree | e58b88e0bd0cdb0fd2ce9f82fb5bc889fb6f38c0 /drivers | |
| parent | Merge git://www.linux-watchdog.org/linux-watchdog (diff) | |
| parent | USB: EHCI: revert "remove ASS/PSS polling timeout" (diff) | |
| download | linux-bc2e4a90d9f75f1664c1587eb09ecd10bb71b022.tar.xz linux-bc2e4a90d9f75f1664c1587eb09ecd10bb71b022.zip | |
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"
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/ehci-timer.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/drivers/usb/host/ehci-timer.c b/drivers/usb/host/ehci-timer.c index f904071d70df..20dbdcbe9b0f 100644 --- a/drivers/usb/host/ehci-timer.c +++ b/drivers/usb/host/ehci-timer.c @@ -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 */ |