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| author |   Robert Baldyga <r.baldyga@samsung.com> | 2015-01-23 13:41:01 +0100 |
|---|---|---|
| committer |   Felipe Balbi <balbi@ti.com> | 2015-01-27 09:34:59 -0600 |
| commit | 5e33f6fdf735cda1d4580fe6f1878da05718fe73 (patch) | |
| tree | 7e6e041131600b431ab284118750a7539245a43a /include/uapi | |
| parent | usb: gadget: f_fs: Fix loop variable (diff) | |
| download | linux-dev-5e33f6fdf735cda1d4580fe6f1878da05718fe73.tar.xz linux-dev-5e33f6fdf735cda1d4580fe6f1878da05718fe73.zip | |
usb: gadget: ffs: add eventfd notification about ffs events
Add eventfd which notifies userspace about ep0 events and AIO completion
events. It simplifies using of FunctionFS with event loop, because now
we need to poll on single file (instead of polling on ep0 and eventfd's
supplied to AIO layer).
FunctionFS eventfd is not triggered if another eventfd is supplied to
AIO layer (in AIO request). It can be useful, for example, when we want
to handle AIO transations for chosen endpoint in separate thread.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/usb/functionfs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/usb/functionfs.h b/include/uapi/linux/usb/functionfs.h index 295ba299e7bd..108dd7997014 100644 --- a/include/uapi/linux/usb/functionfs.h +++ b/include/uapi/linux/usb/functionfs.h @@ -20,6 +20,7 @@ enum functionfs_flags { FUNCTIONFS_HAS_SS_DESC = 4, FUNCTIONFS_HAS_MS_OS_DESC = 8, FUNCTIONFS_VIRTUAL_ADDR = 16, + FUNCTIONFS_EVENTFD = 32, }; /* Descriptor of an non-audio endpoint */ |