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| author | David Vrabel <david.vrabel@csr.com> | 2008-10-20 19:07:19 +0400 |
|---|---|---|
| committer | David Vrabel <david.vrabel@csr.com> | 2008-10-20 19:07:19 +0400 |
| commit | 61e0e79ee3c609eb34edf2fe023708cba6a79b1f (patch) | |
| tree | 663deacffd4071120dc9badb70428fe5f124c7b9 /Documentation/usb/anchors.txt | |
| parent | c15895ef30c2c03e99802951787183039a349d32 (diff) | |
| parent | 0cfd81031a26717fe14380d18275f8e217571615 (diff) | |
| download | linux-61e0e79ee3c609eb34edf2fe023708cba6a79b1f.tar.xz | |
Merge branch 'master' into for-upstream
Conflicts:
Documentation/ABI/testing/sysfs-bus-usb
drivers/Makefile
Diffstat (limited to 'Documentation/usb/anchors.txt')
| -rw-r--r-- | Documentation/usb/anchors.txt | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/usb/anchors.txt b/Documentation/usb/anchors.txt index 5e6b64c20d25..6f24f566955a 100644 --- a/Documentation/usb/anchors.txt +++ b/Documentation/usb/anchors.txt @@ -52,6 +52,11 @@ Therefore no guarantee is made that the URBs have been unlinked when the call returns. They may be unlinked later but will be unlinked in finite time. +usb_scuttle_anchored_urbs() +--------------------------- + +All URBs of an anchor are unanchored en masse. + usb_wait_anchor_empty_timeout() ------------------------------- @@ -59,4 +64,16 @@ This function waits for all URBs associated with an anchor to finish or a timeout, whichever comes first. Its return value will tell you whether the timeout was reached. +usb_anchor_empty() +------------------ + +Returns true if no URBs are associated with an anchor. Locking +is the caller's responsibility. + +usb_get_from_anchor() +--------------------- +Returns the oldest anchored URB of an anchor. The URB is unanchored +and returned with a reference. As you may mix URBs to several +destinations in one anchor you have no guarantee the chronologically +first submitted URB is returned.
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