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authorAlan Stern <stern@rowland.harvard.edu>2009-12-11 16:20:20 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-02 14:53:07 -0800
commitf661c6f8c67bd55e93348f160d590ff9edf08904 (patch)
tree9b5abdda44f9bfb0b6a6dcb51217701a67ed40a0 /Documentation/usb
parenta91b0c502285fd0c569fae1222fdd945ef739233 (diff)
downloadlinux-next-f661c6f8c67bd55e93348f160d590ff9edf08904.tar.gz
USB: check the endpoint type against the pipe type
This patch (as1316) adds some error checking to usb_submit_urb(). It's conditional on CONFIG_USB_DEBUG, so it won't affect normal users. The new check makes sure that the actual type of the endpoint described by urb->pipe agrees with the type encoded in the pipe value. The USB error code documentation is updated to include the code returned by the new check, and the usbfs SUBMITURB handler is updated to use the correct pipe type when legacy user code tries to submit a bulk transfer to an interrupt endpoint. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/usb')
-rw-r--r--Documentation/usb/error-codes.txt6
1 files changed, 4 insertions, 2 deletions
diff --git a/Documentation/usb/error-codes.txt b/Documentation/usb/error-codes.txt
index 9cf83e8c27b8..d83703ea74b2 100644
--- a/Documentation/usb/error-codes.txt
+++ b/Documentation/usb/error-codes.txt
@@ -41,8 +41,8 @@ USB-specific:
-EFBIG Host controller driver can't schedule that many ISO frames.
--EPIPE Specified endpoint is stalled. For non-control endpoints,
- reset this status with usb_clear_halt().
+-EPIPE The pipe type specified in the URB doesn't match the
+ endpoint's actual type.
-EMSGSIZE (a) endpoint maxpacket size is zero; it is not usable
in the current interface altsetting.
@@ -60,6 +60,8 @@ USB-specific:
-EHOSTUNREACH URB was rejected because the device is suspended.
+-ENOEXEC A control URB doesn't contain a Setup packet.
+
**************************************************************************
* Error codes returned by in urb->status *