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Diffstat (limited to 'Documentation/usb/gadget-testing.rst')
| -rw-r--r-- | Documentation/usb/gadget-testing.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/usb/gadget-testing.rst b/Documentation/usb/gadget-testing.rst index 077dfac7ed..b086c7ab72 100644 --- a/Documentation/usb/gadget-testing.rst +++ b/Documentation/usb/gadget-testing.rst @@ -206,6 +206,14 @@ the standard procedure for using FunctionFS (mount it, run the userspace process which implements the function proper). The gadget should be enabled by writing a suitable string to usb_gadget/<gadget>/UDC. +The FFS function provides just one attribute in its function directory: + + ready + +The attribute is read-only and signals if the function is ready (1) to be +used, E.G. if userspace has written descriptors and strings to ep0, so +the gadget can be enabled. + Testing the FFS function ------------------------ |