From 04afd5b59b2edcb0bd035f126bdbe27c31782772 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Mon, 23 Feb 2015 18:40:17 +0530 Subject: [PATCH] usb: gadget: defer setting maxpacket till ->setup() Taken from linux kernel with commit commit 765f5b830e547229bb752e7b232ee83e2b3d49d5 Author: Sebastian Andrzej Siewior Date: Thu Jun 23 14:26:11 2011 +0200 usb: gadget: defer setting maxpacket till ->setup() Signed-off-by: Kishon Vijay Abraham I Reviewed-by: Lukasz Majewski --- drivers/usb/gadget/composite.c | 4 +++- drivers/usb/gadget/ether.c | 2 +- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 98c2da6f14..729a0fa944 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -283,7 +283,7 @@ static void device_qual(struct usb_composite_dev *cdev) qual->bDeviceSubClass = cdev->desc.bDeviceSubClass; qual->bDeviceProtocol = cdev->desc.bDeviceProtocol; /* ASSUME same EP0 fifo size at both speeds */ - qual->bMaxPacketSize0 = cdev->desc.bMaxPacketSize0; + qual->bMaxPacketSize0 = cdev->gadget->ep0->maxpacket; qual->bNumConfigurations = count_configs(cdev, USB_DT_DEVICE_QUALIFIER); qual->bRESERVED = 0; } @@ -736,6 +736,8 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) case USB_DT_DEVICE: cdev->desc.bNumConfigurations = count_configs(cdev, USB_DT_DEVICE); + cdev->desc.bMaxPacketSize0 = + cdev->gadget->ep0->maxpacket; value = min(w_length, (u16) sizeof cdev->desc); memcpy(req->buf, &cdev->desc, value); break; diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index 8f03a6bb9d..1b0e766a94 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -1248,6 +1248,7 @@ eth_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) switch (wValue >> 8) { case USB_DT_DEVICE: + device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; value = min(wLength, (u16) sizeof device_desc); memcpy(req->buf, &device_desc, value); break; @@ -2132,7 +2133,6 @@ autoconf_fail: hs_subset_descriptors(); } - device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; usb_gadget_set_selfpowered(gadget); /* For now RNDIS is always a second config */ -- 2.39.5