From: Robert Baldyga Date: Tue, 28 Jul 2015 05:20:00 +0000 (+0200) Subject: usb: gadget: add 'quirk_zlp_not_supp' to usb_gadget X-Git-Tag: omap-for-v4.3/fixes-merge-window~42^2~35^2~78 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ca1023c81dd10f76a5d0a8be2fdbe724fe7a126a;p=pandora-kernel.git usb: gadget: add 'quirk_zlp_not_supp' to usb_gadget 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 Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 625d482f1a97..9e18178f1d45 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -2075,6 +2075,7 @@ __acquires(musb->lock) musb->g.b_hnp_enable = 0; musb->g.a_alt_hnp_support = 0; musb->g.a_hnp_support = 0; + musb->g.quirk_zlp_not_supp = 1; /* Normal reset, as B-Device; * or else after HNP, as A-Device Reading git-diff-tree failed