path: root/Documentation/usb
diff options
authorAlan Stern <stern@rowland.harvard.edu>2012-10-01 10:31:53 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-22 11:10:24 -0700
commita03bede5c73a6876fa891cfe82a65460dc9f4698 (patch)
tree608948e319564fce6a5cf68bc3ad09c1cdf5e010 /Documentation/usb
parent72675479925f53af051ae8a78bcfafeaa47b3eef (diff)
USB: update documentation for URB_ISO_ASAP
This patch (as1611) updates the USB documentation and kerneldoc to give a more precise meaning for the URB_ISO_ASAP flag and to explain more of the details of scheduling for isochronous URBs. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/usb')
1 files changed, 2 insertions, 3 deletions
diff --git a/Documentation/usb/error-codes.txt b/Documentation/usb/error-codes.txt
index b3f606b81a03..8d1e2a9ebbba 100644
--- a/Documentation/usb/error-codes.txt
+++ b/Documentation/usb/error-codes.txt
@@ -35,9 +35,8 @@ USB-specific:
d) ISO: number_of_packets is < 0
e) various other cases
--EAGAIN a) specified ISO start frame too early
- b) (using ISO-ASAP) too much scheduled for the future
- wait some time and try again.
+-EXDEV ISO: URB_ISO_ASAP wasn't specified and all the frames
+ the URB would be scheduled in have already expired.
-EFBIG Host controller driver can't schedule that many ISO frames.

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