[lkml]   [2013]   [Oct]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH v3 1/3] usb: gadget: add quirk_ep_out_aligned_size field to struct usb_gadget
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

Signed-off-by: David Cohen <>
include/linux/usb/gadget.h | 3 +++
1 file changed, 3 insertions(+)

diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 942ef5e..9405d0f 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -540,6 +540,9 @@ struct usb_gadget {
struct device dev;
unsigned out_epnum;
unsigned in_epnum;
+ /* epout requires buffer size to be aligned to MaxPacketSize */
+ unsigned quirk_ep_out_aligned_size:1;
#define work_to_gadget(w) (container_of((w), struct usb_gadget, work))


 \ /
  Last update: 2013-10-30 18:21    [W:0.073 / U:12.176 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site