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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-28 23:34:14 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-28 23:34:14 +0100 |
| commit | 38a6ed3ed8e108b662f4016a1ebf068dcf4c1ef4 (patch) | |
| tree | a83d5e4e86edf6cb2de22db6f2ff2274753a2bab /drivers/usb/host/ehci-hcd.c | |
| parent | printk: correct the behavior of printk_timed_ratelimit() (diff) | |
| parent | Merge branch 'percpu-cpumask-x86-for-linus-2' of git://git.kernel.org/pub/scm... (diff) | |
| download | linux-38a6ed3ed8e108b662f4016a1ebf068dcf4c1ef4.tar.xz linux-38a6ed3ed8e108b662f4016a1ebf068dcf4c1ef4.zip | |
Merge branch 'linus' into core/printk
Diffstat (limited to 'drivers/usb/host/ehci-hcd.c')
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index e551bb38852b..f2618d17710d 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -110,6 +110,42 @@ MODULE_PARM_DESC (ignore_oc, "ignore bogus hardware overcurrent indications"); /*-------------------------------------------------------------------------*/ +static void +timer_action(struct ehci_hcd *ehci, enum ehci_timer_action action) +{ + /* Don't override timeouts which shrink or (later) disable + * the async ring; just the I/O watchdog. Note that if a + * SHRINK were pending, OFF would never be requested. + */ + if (timer_pending(&ehci->watchdog) + && ((BIT(TIMER_ASYNC_SHRINK) | BIT(TIMER_ASYNC_OFF)) + & ehci->actions)) + return; + + if (!test_and_set_bit(action, &ehci->actions)) { + unsigned long t; + + switch (action) { + case TIMER_IO_WATCHDOG: + t = EHCI_IO_JIFFIES; + break; + case TIMER_ASYNC_OFF: + t = EHCI_ASYNC_JIFFIES; + break; + /* case TIMER_ASYNC_SHRINK: */ + default: + /* add a jiffie since we synch against the + * 8 KHz uframe counter. + */ + t = DIV_ROUND_UP(EHCI_SHRINK_FRAMES * HZ, 1000) + 1; + break; + } + mod_timer(&ehci->watchdog, t + jiffies); + } +} + +/*-------------------------------------------------------------------------*/ + /* * handshake - spin reading hc until handshake completes or fails * @ptr: address of hc register to be read |