usb: gadget: function: f_fs: Let ffs_epfile_ioctl wait for enable.

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This allows users to make an ioctl call as the first action on a
connection. Ex, some functions might want to get endpoint size
before making any i/os.

Previously, calling ioctls before read/write would depending on the
timing of endpoints being enabled.

ESHUTDOWN is now a possible return value and ENODEV is not, so change
docs accordingly.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Jerry Zhang <zhangjerry@google.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

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Jerry Zhang 2017-04-19 18:23:38 -07:00 • committed by Felipe Balbi

parent 8a8b161df5

commit 222155de45

2 changed files with 58 additions and 42 deletions

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7

include/uapi/linux/usb/functionfs.h

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