usb: gadget: add 'quirk_zlp_not_supp' to usb_gadget

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Due to some UDC controllers may not support zlp, usb gadget layer
needs to provide a generic way to inform gadget functions about non-standard
hardware limitations.

This patch adds 'quirk_zlp_not_supp' field to struct usb_gadget and helper
function gadget_is_zlp_supported(). It also sets 'quirk_zlp_not_supp'
to 1 in musb UDC driver, which has such limitation.

[ balbi@ti.com : make it build ]

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

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This commit is contained in:

Robert Baldyga 2015-07-28 07:20:00 +02:00 • committed by Felipe Balbi

parent 02ded1b0d8

commit ca1023c81d

2 changed files with 11 additions and 0 deletions

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1

drivers/usb/musb/musb_gadget.c

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10

include/linux/usb/gadget.h

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