On Wed, Oct 14, 2015 at 8:42 PM, Felipe Balbi <balbi@xxxxxx> wrote: > > Hi, > > jaswinder.singh@xxxxxxxxxx writes: >> From: Jassi Brar <jaswinder.singh@xxxxxxxxxx> >> >> We must return 0 for any OUT setup request, otherwise >> protocol error may occur. > > have you seen any such errors ? > Yes. While testing my new udc driver. > Care to describe what problems you have seen and which UDC you were using, > what's the exact scenario. How have you tested this ? > The udc I am writing the driver for is not yet public. To test my driver at lowest level possible, I use 'usbmon' to capture and analyze traffic since I don't have any hardware probe. I see the following on gadget side ------- configfs-gadget gadget: non-core control req21.20 v0000 i0001 l7 configfs-gadget gadget: acm ttyGS0 req21.20 v0000 i0001 l7 configfs-gadget gadget: acm ttyGS0 completion, err -71 ------- and the following on host side usbmon capture ------- ffff88041ed01f00 540296433 S Co:3:023:0 s 21 20 0000 0001 0007 7 = 80250000 000008 ffff88041ed01f00 540296790 C Co:3:023:0 -71 0 ------- Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
