USB: use usb_endpoint_maxp() instead of le16_to_cpu()

Now ${LINUX}/drivers/usb/* can use usb_endpoint_maxp(desc) to get maximum packet size
instead of le16_to_cpu(desc->wMaxPacketSize).
This patch fix it up

Cc: Armin Fuerst <fuerst@in.tum.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Johannes Erdfelt <johannes@erdfelt.com>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Oliver Neukum <oliver@neukum.name>
Cc: David Kubicek <dave@awk.cz>
Cc: Johan Hovold <jhovold@gmail.com>
Cc: Brad Hards <bhards@bigpond.net.au>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Thomas Dahlmann <dahlmann.thomas@arcor.de>
Cc: David Brownell <david-b@pacbell.net>
Cc: David Lopo <dlopo@chipidea.mips.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: Xie Xiaobo <X.Xie@freescale.com>
Cc: Li Yang <leoli@freescale.com>
Cc: Jiang Bo <tanya.jiang@freescale.com>
Cc: Yuan-hsin Chen <yhchen@faraday-tech.com>
Cc: Darius Augulis <augulis.darius@gmail.com>
Cc: Xiaochen Shen <xiaochen.shen@intel.com>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: OKI SEMICONDUCTOR, <toshiharu-linux@dsn.okisemi.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Ben Dooks <ben@simtec.co.uk>
Cc: Thomas Abraham <thomas.ab@samsung.com>
Cc: Herbert Pötzl <herbert@13thfloor.at>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: Roman Weissgaerber <weissg@vienna.at>
Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Tony Olech <tony.olech@elandigitalsystems.com>
Cc: Florian Floe Echtler <echtler@fs.tum.de>
Cc: Christian Lucht <lucht@codemercs.com>
Cc: Juergen Stuber <starblue@sourceforge.net>
Cc: Georges Toth <g.toth@e-biz.lu>
Cc: Bill Ryder <bryder@sgi.com>
Cc: Kuba Ober <kuba@mareimbrium.org>
Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

58 files changed, 105 insertions, 111 deletions

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index dac7676ce21..f69a1854a59 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1058,11 +1058,11 @@ made_compressed_probe:
 		goto alloc_fail;
 	}
 
-	ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize);
-	readsize = le16_to_cpu(epread->wMaxPacketSize) *
+	ctrlsize = usb_endpoint_maxp(epctrl);
+	readsize = usb_endpoint_maxp(epread) *
 				(quirks == SINGLE_RX_URB ? 1 : 2);
 	acm->combined_interfaces = combined_interfaces;
-	acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize) * 20;
+	acm->writesize = usb_endpoint_maxp(epwrite) * 20;
 	acm->control = control_interface;
 	acm->data = data_interface;
 	acm->minor = minor;
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 2b9ff518b50..1d26a7135dd 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -682,7 +682,7 @@ next_desc:
 	if (!ep || !usb_endpoint_is_int_in(ep))
 		goto err;
 
-	desc->wMaxPacketSize = le16_to_cpu(ep->wMaxPacketSize);
+	desc->wMaxPacketSize = usb_endpoint_maxp(ep);
 	desc->bMaxPacketSize0 = udev->descriptor.bMaxPacketSize0;
 
 	desc->orq = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 3f94ac34dce..12cf5e7395a 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -186,8 +186,7 @@ static int usbtmc_ioctl_abort_bulk_in(struct usbtmc_device_data *data)
 	for (n = 0; n < current_setting->desc.bNumEndpoints; n++)
 		if (current_setting->endpoint[n].desc.bEndpointAddress ==
 			data->bulk_in)
-			max_size = le16_to_cpu(current_setting->endpoint[n].
-						desc.wMaxPacketSize);
+			max_size = usb_endpoint_maxp(&current_setting->endpoint[n].desc);
 
 	if (max_size == 0) {
 		dev_err(dev, "Couldn't get wMaxPacketSize\n");
@@ -636,7 +635,7 @@ static int usbtmc_ioctl_clear(struct usbtmc_device_data *data)
 	for (n = 0; n < current_setting->desc.bNumEndpoints; n++) {
 		desc = &current_setting->endpoint[n].desc;
 		if (desc->bEndpointAddress == data->bulk_in)
-			max_size = le16_to_cpu(desc->wMaxPacketSize);
+			max_size = usb_endpoint_maxp(desc);
 	}
 
 	if (max_size == 0) {
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 26678cadfb2..9d5e07af55b 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -124,9 +124,9 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
 
 	if (usb_endpoint_xfer_isoc(&ep->desc))
 		max_tx = (desc->bMaxBurst + 1) * (desc->bmAttributes + 1) *
-			le16_to_cpu(ep->desc.wMaxPacketSize);
+			usb_endpoint_maxp(&ep->desc);
 	else if (usb_endpoint_xfer_int(&ep->desc))
-		max_tx = le16_to_cpu(ep->desc.wMaxPacketSize) *
+		max_tx = usb_endpoint_maxp(&ep->desc) *
 			(desc->bMaxBurst + 1);
 	else
 		max_tx = 999999;
@@ -241,7 +241,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
 		    cfgno, inum, asnum, d->bEndpointAddress);
 		endpoint->desc.bmAttributes = USB_ENDPOINT_XFER_INT;
 		endpoint->desc.bInterval = 1;
-		if (le16_to_cpu(endpoint->desc.wMaxPacketSize) > 8)
+		if (usb_endpoint_maxp(&endpoint->desc) > 8)
 			endpoint->desc.wMaxPacketSize = cpu_to_le16(8);
 	}
 
@@ -254,7 +254,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
 			&& usb_endpoint_xfer_bulk(d)) {
 		unsigned maxp;
 
-		maxp = le16_to_cpu(endpoint->desc.wMaxPacketSize) & 0x07ff;
+		maxp = usb_endpoint_maxp(&endpoint->desc) & 0x07ff;
 		if (maxp != 512)
 			dev_warn(ddev, "config %d interface %d altsetting %d "
 				"bulk endpoint 0x%X has invalid maxpacket %d\n",
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index 0149c0976e9..d9569658476 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -190,7 +190,7 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end,
 	dir = usb_endpoint_dir_in(desc) ? 'I' : 'O';
 
 	if (speed == USB_SPEED_HIGH) {
-		switch (le16_to_cpu(desc->wMaxPacketSize) & (0x03 << 11)) {
+		switch (usb_endpoint_maxp(desc) & (0x03 << 11)) {
 		case 1 << 11:
 			bandwidth = 2; break;
 		case 2 << 11:
@@ -240,7 +240,7 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end,
 
 	start += sprintf(start, format_endpt, desc->bEndpointAddress, dir,
 			 desc->bmAttributes, type,
-			 (le16_to_cpu(desc->wMaxPacketSize) & 0x07ff) *
+			 (usb_endpoint_maxp(desc) & 0x07ff) *
 			 bandwidth,
 			 interval, unit);
 	return start;
diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c
index df502a98d0d..db7fe50c23d 100644
--- a/drivers/usb/core/endpoint.c
+++ b/drivers/usb/core/endpoint.c
@@ -56,7 +56,7 @@ static ssize_t show_ep_wMaxPacketSize(struct device *dev,
 {
 	struct ep_device *ep = to_ep_device(dev);
 	return sprintf(buf, "%04x\n",
-			le16_to_cpu(ep->desc->wMaxPacketSize) & 0x07ff);
+		        usb_endpoint_maxp(ep->desc) & 0x07ff);
 }
 static DEVICE_ATTR(wMaxPacketSize, S_IRUGO, show_ep_wMaxPacketSize, NULL);
 
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 99fff6be364..338f91ff54c 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3018,7 +3018,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
 		i = 512;
 	else
 		i = udev->descriptor.bMaxPacketSize0;
-	if (le16_to_cpu(udev->ep0.desc.wMaxPacketSize) != i) {
+	if (usb_endpoint_maxp(&udev->ep0.desc) != i) {
 		if (udev->speed == USB_SPEED_LOW ||
 				!(i == 8 || i == 16 || i == 32 || i == 64)) {
 			dev_err(&udev->dev, "Invalid ep0 maxpacket: %d\n", i);
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index ae334b067c1..909625b91eb 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -350,7 +350,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
 			dev->state < USB_STATE_CONFIGURED)
 		return -ENODEV;
 
-	max = le16_to_cpu(ep->desc.wMaxPacketSize);
+	max = usb_endpoint_maxp(&ep->desc);
 	if (max <= 0) {
 		dev_dbg(&dev->dev,
 			"bogus endpoint ep%d%s in %s (bad maxpacket %d)\n",
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index de5f0afa890..cebaef720cd 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -254,8 +254,7 @@ static int dwc3_gadget_set_ep_config(struct dwc3 *dwc, struct dwc3_ep *dep,
 	memset(&params, 0x00, sizeof(params));
 
 	params.param0.depcfg.ep_type = usb_endpoint_type(desc);
-	params.param0.depcfg.max_packet_size =
-		le16_to_cpu(desc->wMaxPacketSize);
+	params.param0.depcfg.max_packet_size = usb_endpoint_maxp(desc);
 
 	params.param1.depcfg.xfer_complete_enable = true;
 	params.param1.depcfg.xfer_not_ready_enable = true;
diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c
index 70f2b376c86..d65d8392be7 100644
--- a/drivers/usb/gadget/amd5536udc.c
+++ b/drivers/usb/gadget/amd5536udc.c
@@ -354,7 +354,7 @@ udc_ep_enable(struct usb_ep *usbep, const struct usb_endpoint_descriptor *desc)
 	writel(tmp, &dev->ep[ep->num].regs->ctl);
 
 	/* set max packet size */
-	maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+	maxpacket = usb_endpoint_maxp(desc);
 	tmp = readl(&dev->ep[ep->num].regs->bufout_maxpkt);
 	tmp = AMD_ADDBITS(tmp, maxpacket, UDC_EP_MAX_PKT_SIZE);
 	ep->ep.maxpacket = maxpacket;
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index ddb118a7680..d01fa5badd6 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -487,7 +487,7 @@ static int at91_ep_enable(struct usb_ep *_ep,
 			|| !desc || ep->desc
 			|| _ep->name == ep0name
 			|| desc->bDescriptorType != USB_DT_ENDPOINT
-			|| (maxpacket = le16_to_cpu(desc->wMaxPacketSize)) == 0
+			|| (maxpacket = usb_endpoint_maxp(desc)) == 0
 			|| maxpacket > ep->maxpacket) {
 		DBG("bad ep or descriptor\n");
 		return -EINVAL;
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index 5b1665eb1be..722c468e9b3 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -527,7 +527,7 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
 
 	DBG(DBG_GADGET, "%s: ep_enable: desc=%p\n", ep->ep.name, desc);
 
-	maxpacket = le16_to_cpu(desc->wMaxPacketSize) & 0x7ff;
+	maxpacket = usb_endpoint_maxp(desc) & 0x7ff;
 
 	if (((desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK) != ep->index)
 			|| ep->index == 0
@@ -571,7 +571,7 @@ usba_ep_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
 		 * Bits 11:12 specify number of _additional_
 		 * transactions per microframe.
 		 */
-		nr_trans = ((le16_to_cpu(desc->wMaxPacketSize) >> 11) & 3) + 1;
+		nr_trans = ((usb_endpoint_maxp(desc) >> 11) & 3) + 1;
 		if (nr_trans > 3)
 			return -EINVAL;
 
diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
index 1265a8502ea..83428f56253 100644
--- a/drivers/usb/gadget/ci13xxx_udc.c
+++ b/drivers/usb/gadget/ci13xxx_udc.c
@@ -2101,7 +2101,7 @@ static int ep_enable(struct usb_ep *ep,
 	mEp->num  = usb_endpoint_num(desc);
 	mEp->type = usb_endpoint_type(desc);
 
-	mEp->ep.maxpacket = __constant_le16_to_cpu(desc->wMaxPacketSize);
+	mEp->ep.maxpacket = usb_endpoint_maxp(desc);
 
 	dbg_event(_usb_addr(mEp), "ENABLE", 0);
 
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index aef47414f5d..8065464523b 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -164,7 +164,7 @@ int config_ep_by_speed(struct usb_gadget *g,
 
 ep_found:
 	/* commit results */
-	_ep->maxpacket = le16_to_cpu(chosen_desc->wMaxPacketSize);
+	_ep->maxpacket = usb_endpoint_maxp(chosen_desc);
 	_ep->desc = chosen_desc;
 	_ep->comp_desc = NULL;
 	_ep->maxburst = 0;
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index e755a9d267f..7b06d39d620 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -439,7 +439,7 @@ dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
 	 * maximum packet size.
 	 * For SS devices the wMaxPacketSize is limited by 1024.
 	 */
-	max = le16_to_cpu(desc->wMaxPacketSize) & 0x7ff;
+	max = usb_endpoint_maxp(desc) & 0x7ff;
 
 	/* drivers must not request bad settings, since lower levels
 	 * (hardware or its drivers) may not check.  some endpoints
@@ -1277,7 +1277,7 @@ static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep)
 		int	tmp;
 
 		/* high bandwidth mode */
-		tmp = le16_to_cpu(ep->desc->wMaxPacketSize);
+		tmp = usb_endpoint_maxp(ep->desc);
 		tmp = (tmp >> 11) & 0x03;
 		tmp *= 8 /* applies to entire frame */;
 		limit += limit * tmp;
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
index 7a7e6b7e1fd..cdca7ebb7b4 100644
--- a/drivers/usb/gadget/epautoconf.c
+++ b/drivers/usb/gadget/epautoconf.c
@@ -158,7 +158,7 @@ ep_matches (
 	 * where it's an output parameter representing the full speed limit.
 	 * the usb spec fixes high speed bulk maxpacket at 512 bytes.
 	 */
-	max = 0x7ff & le16_to_cpu(desc->wMaxPacketSize);
+	max = 0x7ff & usb_endpoint_maxp(desc);
 	switch (type) {
 	case USB_ENDPOINT_XFER_INT:
 		/* INT:  limit 64 bytes full speed, 1024 high/super speed */
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 5b933958200..4ce3decda1d 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -2401,8 +2401,7 @@ reset:
 		goto reset;
 	fsg->bulk_out->driver_data = common;
 	fsg->bulk_out_enabled = 1;
-	common->bulk_out_maxpacket =
-		le16_to_cpu(fsg->bulk_out->desc->wMaxPacketSize);
+	common->bulk_out_maxpacket = usb_endpoint_maxp(fsg->bulk_out->desc);
 	clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
 
 	/* Allocate the requests */
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 639e14a2fd1..39ece40a045 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -2801,7 +2801,7 @@ reset:
 	if ((rc = enable_endpoint(fsg, fsg->bulk_out, d)) != 0)
 		goto reset;
 	fsg->bulk_out_enabled = 1;
-	fsg->bulk_out_maxpacket = le16_to_cpu(d->wMaxPacketSize);
+	fsg->bulk_out_maxpacket = usb_endpoint_maxp(d);
 	clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
 
 	if (transport_is_cbi()) {
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index 3bf872e1ad3..2a03e4de11c 100644
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -540,7 +540,7 @@ static int qe_ep_init(struct qe_udc *udc,
 	int reval = 0;
 	u16 max = 0;
 
-	max = le16_to_cpu(desc->wMaxPacketSize);
+	max = usb_endpoint_maxp(desc);
 
 	/* check the max package size validate for this endpoint */
 	/* Refer to USB2.0 spec table 9-13,
diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c
index de24a4233c2..d6993507165 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -559,7 +559,7 @@ static int fsl_ep_enable(struct usb_ep *_ep,
 	if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN))
 		return -ESHUTDOWN;
 
-	max = le16_to_cpu(desc->wMaxPacketSize);
+	max = usb_endpoint_maxp(desc);
 
 	/* Disable automatic zlp generation.  Driver is responsible to indicate
 	 * explicitly through req->req.zero.  This is needed to enable multi-td
diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c
index 4ec888f9000..d9ee6c37a6c 100644
--- a/drivers/usb/gadget/fusb300_udc.c
+++ b/drivers/usb/gadget/fusb300_udc.c
@@ -220,7 +220,7 @@ static int config_ep(struct fusb300_ep *ep,
 
 	info.type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
 	info.dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0;
-	info.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+	info.maxpacket = usb_endpoint_maxp(desc);
 	info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
 
 	if ((info.type == USB_ENDPOINT_XFER_INT) ||
diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c
index 692fd9b2248..bf08bfcd90b 100644
--- a/drivers/usb/gadget/imx_udc.c
+++ b/drivers/usb/gadget/imx_udc.c
@@ -689,7 +689,7 @@ static int imx_ep_enable(struct usb_ep *usb_ep,
 		return -EINVAL;
 	}
 
-	if (imx_ep->fifosize < le16_to_cpu(desc->wMaxPacketSize)) {
+	if (imx_ep->fifosize < usb_endpoint_maxp(desc)) {
 		D_ERR(imx_usb->dev,
 			"<%s> bad %s maxpacket\n", __func__, usb_ep->name);
 		return -ERANGE;
diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c
index a06e2c27b43..5bf9942eb45 100644
--- a/drivers/usb/gadget/langwell_udc.c
+++ b/drivers/usb/gadget/langwell_udc.c
@@ -283,7 +283,7 @@ static int langwell_ep_enable(struct usb_ep *_ep,
 	if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
 		return -ESHUTDOWN;
 
-	max = le16_to_cpu(desc->wMaxPacketSize);
+	max = usb_endpoint_maxp(desc);
 
 	/*
 	 * disable HW zero length termination select
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 491f825ed5c..5e597c3c44f 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -370,7 +370,7 @@ static void m66592_ep_setting(struct m66592 *m66592, struct m66592_ep *ep,
 
 	ep->pipectr = get_pipectr_addr(pipenum);
 	ep->pipenum = pipenum;
-	ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+	ep->ep.maxpacket = usb_endpoint_maxp(desc);
 	m66592->pipenum2ep[pipenum] = ep;
 	m66592->epaddr2ep[desc->bEndpointAddress&USB_ENDPOINT_NUMBER_MASK] = ep;
 	INIT_LIST_HEAD(&ep->queue);
@@ -447,7 +447,7 @@ static int alloc_pipe_config(struct m66592_ep *ep,
 	ep->type = info.type;
 
 	info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
-	info.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+	info.maxpacket = usb_endpoint_maxp(desc);
 	info.interval = desc->bInterval;
 	if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 		info.dir_in = 1;
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index ce1ac2bcb31..263dec40af3 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -493,7 +493,7 @@ static int mv_ep_enable(struct usb_ep *_ep,
 		return -ESHUTDOWN;
 
 	direction = ep_dir(ep);
-	max = le16_to_cpu(desc->wMaxPacketSize);
+	max = usb_endpoint_maxp(desc);
 
 	/*
 	 * disable HW zero length termination select
diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c
index ab98ea926a1..6fef1c02448 100644
--- a/drivers/usb/gadget/net2272.c
+++ b/drivers/usb/gadget/net2272.c
@@ -204,7 +204,7 @@ net2272_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
 	if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)
 		return -ESHUTDOWN;
 
-	max = le16_to_cpu(desc->wMaxPacketSize) & 0x1fff;
+	max = usb_endpoint_maxp(desc) & 0x1fff;
 
 	spin_lock_irqsave(&dev->lock, flags);
 	_ep->maxpacket = max & 0x7fff;
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 3dd40b4e675..8d3673fadfe 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -169,7 +169,7 @@ net2280_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
 		return -EDOM;
 
 	/* sanity check ep-e/ep-f since their fifos are small */
-	max = le16_to_cpu (desc->wMaxPacketSize) & 0x1fff;
+	max = usb_endpoint_maxp (desc) & 0x1fff;
 	if (ep->num > 4 && max > 64)
 		return -ERANGE;
 
@@ -1640,7 +1640,7 @@ show_queues (struct device *_dev, struct device_attribute *attr, char *buf)
 				 default:
 					val = "iso"; break;
 				 }; val; }),
-				le16_to_cpu (d->wMaxPacketSize) & 0x1fff,
+				usb_endpoint_maxp (d) & 0x1fff,
 				ep->dma ? "dma" : "pio", ep->fifo_size
 				);
 		} else /* ep0 should only have one transfer queued */