usb: gadget: f_fs: buffer data from ‘oversized’ OUT requests

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f_fs rounds up read(2) requests to a multiple of a max packet size
which means that host may provide more data than user has space for.
So far, the excess data has been silently ignored.

This introduces a buffer for a tail of such requests so that they are
returned on next read instead of being ignored.

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

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Michal Nazarewicz 2016-05-21 20:47:35 +02:00 • committed by Felipe Balbi

parent c662a31be7

commit 9353afbbfa

1 changed files with 109 additions and 21 deletions

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drivers/usb/gadget/function/f_fs.c

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