usb: gadget: add quirk_ep_out_aligned_size field to struct usb_gadget

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Due to USB controllers may have different restrictions, usb gadget layer
needs to provide a generic way to inform gadget functions to complain
with non-standard requirements.

This patch adds 'quirk_ep_out_aligned_size' field to struct usb_gadget
to inform when controller's epout requires buffer size to be aligned to
MaxPacketSize. A helper is also provided to align buffer size when
necessary.

Cc: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

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David Cohen 2013-12-09 15:55:35 -08:00 • committed by Felipe Balbi

parent d8318d7f6b

commit 0b2d2bbade

1 changed files with 20 additions and 0 deletions

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include/linux/usb/gadget.h

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