Merge tag 'usb-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some USB fixes and new device ids for 4.6-rc3.

  Nothing major, the normal USB gadget fixes and usb-serial driver ids,
  along with some other fixes mixed in.  All except the USB serial ids
  have been tested in linux-next, the id additions should be fine as
  they are 'trivial'"

* tag 'usb-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (25 commits)
  USB: option: add "D-Link DWM-221 B1" device id
  USB: serial: cp210x: Adding GE Healthcare Device ID
  USB: serial: ftdi_sio: Add support for ICP DAS I-756xU devices
  usb: dwc3: keystone: drop dma_mask configuration
  usb: gadget: udc-core: remove manual dma configuration
  usb: dwc3: pci: add ID for one more Intel Broxton platform
  usb: renesas_usbhs: fix to avoid using a disabled ep in usbhsg_queue_done()
  usb: dwc2: do not override forced dr_mode in gadget setup
  usb: gadget: f_midi: unlock on error
  USB: digi_acceleport: do sanity checking for the number of ports
  USB: cypress_m8: add endpoint sanity check
  USB: mct_u232: add sanity checking in probe
  usb: fix regression in SuperSpeed endpoint descriptor parsing
  USB: usbip: fix potential out-of-bounds write
  usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer
  usb: renesas_usbhs: avoid NULL pointer derefernce in usbhsf_pkt_handler()
  usb: gadget: f_midi: Fixed a bug when buflen was smaller than wMaxPacketSize
  usb: phy: qcom-8x16: fix regulator API abuse
  usb: ch9: Fix SSP Device Cap wFunctionalitySupport type
  usb: gadget: composite: Access SSP Dev Cap fields properly
  ...

Author: torvalds

drivers/usb/core/config.c

@@ -75,8 +75,6 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
 	 * be the first thing immediately following the endpoint descriptor.
 	 */
 	desc = (struct usb_ss_ep_comp_descriptor *) buffer;
-	buffer += desc->bLength;
-	size -= desc->bLength;
 
 	if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP ||
 			size < USB_DT_SS_EP_COMP_SIZE) {
@@ -100,7 +98,8 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
 					ep->desc.wMaxPacketSize;
 		return;
 	}
-
+	buffer += desc->bLength;
+	size -= desc->bLength;
 	memcpy(&ep->ss_ep_comp, desc, USB_DT_SS_EP_COMP_SIZE);
 
 	/* Check the various values */
@@ -146,12 +145,6 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
 		ep->ss_ep_comp.bmAttributes = 2;
 	}
 
-	/* Parse a possible SuperSpeedPlus isoc ep companion descriptor */
-	if (usb_endpoint_xfer_isoc(&ep->desc) &&
-	    USB_SS_SSP_ISOC_COMP(desc->bmAttributes))
-		usb_parse_ssp_isoc_endpoint_companion(ddev, cfgno, inum, asnum,
-							ep, buffer, size);
-
 	if (usb_endpoint_xfer_isoc(&ep->desc))
 		max_tx = (desc->bMaxBurst + 1) *
 			(USB_SS_MULT(desc->bmAttributes)) *
@@ -171,6 +164,11 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
 				max_tx);
 		ep->ss_ep_comp.wBytesPerInterval = cpu_to_le16(max_tx);
 	}
+	/* Parse a possible SuperSpeedPlus isoc ep companion descriptor */
+	if (usb_endpoint_xfer_isoc(&ep->desc) &&
+	    USB_SS_SSP_ISOC_COMP(desc->bmAttributes))
+		usb_parse_ssp_isoc_endpoint_companion(ddev, cfgno, inum, asnum,
+							ep, buffer, size);
 }
 
 static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,

drivers/usb/dwc2/gadget.c

@@ -2254,6 +2254,7 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
 {
 	u32 intmsk;
 	u32 val;
+	u32 usbcfg;
 
 	/* Kill any ep0 requests as controller will be reinitialized */
 	kill_all_requests(hsotg, hsotg->eps_out[0], -ECONNRESET);
@@ -2267,10 +2268,16 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
 	 * set configuration.
 	 */
 
+	/* keep other bits untouched (so e.g. forced modes are not lost) */
+	usbcfg = dwc2_readl(hsotg->regs + GUSBCFG);
+	usbcfg &= ~(GUSBCFG_TOUTCAL_MASK | GUSBCFG_PHYIF16 | GUSBCFG_SRPCAP |
+		GUSBCFG_HNPCAP);
+
 	/* set the PLL on, remove the HNP/SRP and set the PHY */
 	val = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5;
-	dwc2_writel(hsotg->phyif | GUSBCFG_TOUTCAL(7) |
-	       (val << GUSBCFG_USBTRDTIM_SHIFT), hsotg->regs + GUSBCFG);
+	usbcfg |= hsotg->phyif | GUSBCFG_TOUTCAL(7) |
+		(val << GUSBCFG_USBTRDTIM_SHIFT);
+	dwc2_writel(usbcfg, hsotg->regs + GUSBCFG);
 
 	dwc2_hsotg_init_fifo(hsotg);
 
@@ -3031,6 +3038,7 @@ static struct usb_ep_ops dwc2_hsotg_ep_ops = {
 static void dwc2_hsotg_init(struct dwc2_hsotg *hsotg)
 {
 	u32 trdtim;
+	u32 usbcfg;
 	/* unmask subset of endpoint interrupts */
 
 	dwc2_writel(DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK |
@@ -3054,11 +3062,16 @@ static void dwc2_hsotg_init(struct dwc2_hsotg *hsotg)
 
 	dwc2_hsotg_init_fifo(hsotg);
 
+	/* keep other bits untouched (so e.g. forced modes are not lost) */
+	usbcfg = dwc2_readl(hsotg->regs + GUSBCFG);
+	usbcfg &= ~(GUSBCFG_TOUTCAL_MASK | GUSBCFG_PHYIF16 | GUSBCFG_SRPCAP |
+		GUSBCFG_HNPCAP);
+
 	/* set the PLL on, remove the HNP/SRP and set the PHY */
 	trdtim = (hsotg->phyif == GUSBCFG_PHYIF8) ? 9 : 5;
-	dwc2_writel(hsotg->phyif | GUSBCFG_TOUTCAL(7) |
-		(trdtim << GUSBCFG_USBTRDTIM_SHIFT),
-		hsotg->regs + GUSBCFG);
+	usbcfg |= hsotg->phyif | GUSBCFG_TOUTCAL(7) |
+		(trdtim << GUSBCFG_USBTRDTIM_SHIFT);
+	dwc2_writel(usbcfg, hsotg->regs + GUSBCFG);
 
 	if (using_dma(hsotg))
 		__orr32(hsotg->regs + GAHBCFG, GAHBCFG_DMA_EN);

drivers/usb/dwc3/core.c

@@ -67,23 +67,9 @@ void dwc3_set_mode(struct dwc3 *dwc, u32 mode)
 static int dwc3_core_soft_reset(struct dwc3 *dwc)
 {
 	u32		reg;
+	int		retries = 1000;
 	int		ret;
 
-	/* Before Resetting PHY, put Core in Reset */
-	reg = dwc3_readl(dwc->regs, DWC3_GCTL);
-	reg |= DWC3_GCTL_CORESOFTRESET;
-	dwc3_writel(dwc->regs, DWC3_GCTL, reg);
-
-	/* Assert USB3 PHY reset */
-	reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
-	reg |= DWC3_GUSB3PIPECTL_PHYSOFTRST;
-	dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
-
-	/* Assert USB2 PHY reset */
-	reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
-	reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST;
-	dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
-
 	usb_phy_init(dwc->usb2_phy);
 	usb_phy_init(dwc->usb3_phy);
 	ret = phy_init(dwc->usb2_generic_phy);
@@ -95,26 +81,28 @@ static int dwc3_core_soft_reset(struct dwc3 *dwc)
 		phy_exit(dwc->usb2_generic_phy);
 		return ret;
 	}
-	mdelay(100);
 
-	/* Clear USB3 PHY reset */
-	reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
-	reg &= ~DWC3_GUSB3PIPECTL_PHYSOFTRST;
-	dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
+	/*
+	 * We're resetting only the device side because, if we're in host mode,
+	 * XHCI driver will reset the host block. If dwc3 was configured for
+	 * host-only mode, then we can return early.
+	 */
+	if (dwc->dr_mode == USB_DR_MODE_HOST)
+		return 0;
 
-	/* Clear USB2 PHY reset */
-	reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
-	reg &= ~DWC3_GUSB2PHYCFG_PHYSOFTRST;
-	dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
+	reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+	reg |= DWC3_DCTL_CSFTRST;
+	dwc3_writel(dwc->regs, DWC3_DCTL, reg);
 
-	mdelay(100);
+	do {
+		reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+		if (!(reg & DWC3_DCTL_CSFTRST))
+			return 0;
 
-	/* After PHYs are stable we can take Core out of reset state */
-	reg = dwc3_readl(dwc->regs, DWC3_GCTL);
-	reg &= ~DWC3_GCTL_CORESOFTRESET;
-	dwc3_writel(dwc->regs, DWC3_GCTL, reg);
+		udelay(1);
+	} while (--retries);
 
-	return 0;
+	return -ETIMEDOUT;
 }
 
 /**

drivers/usb/dwc3/dwc3-keystone.c

@@ -39,8 +39,6 @@
 #define USBSS_IRQ_COREIRQ_EN	BIT(0)
 #define USBSS_IRQ_COREIRQ_CLR	BIT(0)
 
-static u64 kdwc3_dma_mask;
-
 struct dwc3_keystone {
 	struct device			*dev;
 	struct clk			*clk;
@@ -108,9 +106,6 @@ static int kdwc3_probe(struct platform_device *pdev)
 	if (IS_ERR(kdwc->usbss))
 		return PTR_ERR(kdwc->usbss);
 
-	kdwc3_dma_mask = dma_get_mask(dev);
-	dev->dma_mask = &kdwc3_dma_mask;
-
 	kdwc->clk = devm_clk_get(kdwc->dev, "usb");
 
 	error = clk_prepare_enable(kdwc->clk);

drivers/usb/dwc3/dwc3-pci.c

@@ -35,6 +35,7 @@
 #define PCI_DEVICE_ID_INTEL_SPTLP		0x9d30
 #define PCI_DEVICE_ID_INTEL_SPTH		0xa130
 #define PCI_DEVICE_ID_INTEL_BXT			0x0aaa
+#define PCI_DEVICE_ID_INTEL_BXT_M		0x1aaa
 #define PCI_DEVICE_ID_INTEL_APL			0x5aaa
 
 static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
@@ -213,6 +214,7 @@ static const struct pci_device_id dwc3_pci_id_table[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTLP), },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SPTH), },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
 	{  }	/* Terminating Entry */

drivers/usb/dwc3/gadget.c

@@ -568,7 +568,7 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
 		dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);
 
 		if (!usb_endpoint_xfer_isoc(desc))
-			return 0;
+			goto out;
 
 		/* Link TRB for ISOC. The HWO bit is never reset */
 		trb_st_hw = &dep->trb_pool[0];
@@ -582,9 +582,10 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
 		trb_link->ctrl |= DWC3_TRB_CTRL_HWO;
 	}
 
+out:
 	switch (usb_endpoint_type(desc)) {
 	case USB_ENDPOINT_XFER_CONTROL:
-		strlcat(dep->name, "-control", sizeof(dep->name));
+		/* don't change name */
 		break;
 	case USB_ENDPOINT_XFER_ISOC:
 		strlcat(dep->name, "-isoc", sizeof(dep->name));
@@ -2487,7 +2488,11 @@ static void dwc3_gadget_wakeup_interrupt(struct dwc3 *dwc)
 	 * implemented.
 	 */
 
-	dwc->gadget_driver->resume(&dwc->gadget);
+	if (dwc->gadget_driver && dwc->gadget_driver->resume) {
+		spin_unlock(&dwc->lock);
+		dwc->gadget_driver->resume(&dwc->gadget);
+		spin_lock(&dwc->lock);
+	}
 }
 
 static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc,

drivers/usb/gadget/composite.c

@@ -656,7 +656,8 @@ static int bos_desc(struct usb_composite_dev *cdev)
 		ssp_cap->bmAttributes = cpu_to_le32(1);
 
 		/* Min RX/TX Lane Count = 1 */
-		ssp_cap->wFunctionalitySupport = (1 << 8) | (1 << 12);
+		ssp_cap->wFunctionalitySupport =
+			cpu_to_le16((1 << 8) | (1 << 12));
 
 		/*
 		 * bmSublinkSpeedAttr[0]:
@@ -666,7 +667,7 @@ static int bos_desc(struct usb_composite_dev *cdev)
 		 *   LSM = 10 (10 Gbps)
 		 */
 		ssp_cap->bmSublinkSpeedAttr[0] =
-			(3 << 4) | (1 << 14) | (0xa << 16);
+			cpu_to_le32((3 << 4) | (1 << 14) | (0xa << 16));
 		/*
 		 * bmSublinkSpeedAttr[1] =
 		 *   ST  = Symmetric, TX
@@ -675,7 +676,8 @@ static int bos_desc(struct usb_composite_dev *cdev)
 		 *   LSM = 10 (10 Gbps)
 		 */
 		ssp_cap->bmSublinkSpeedAttr[1] =
-			(3 << 4) | (1 << 14) | (0xa << 16) | (1 << 7);
+			cpu_to_le32((3 << 4) | (1 << 14) |
+				    (0xa << 16) | (1 << 7));
 	}
 
 	return le16_to_cpu(bos->wTotalLength);

drivers/usb/gadget/function/f_midi.c

@@ -24,6 +24,7 @@
 #include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/kfifo.h>
+#include <linux/spinlock.h>
 
 #include <sound/core.h>
 #include <sound/initval.h>
@@ -89,6 +90,7 @@ struct f_midi {
 	unsigned int buflen, qlen;
 	/* This fifo is used as a buffer ring for pre-allocated IN usb_requests */
 	DECLARE_KFIFO_PTR(in_req_fifo, struct usb_request *);
+	spinlock_t transmit_lock;
 	unsigned int in_last_port;
 
 	struct gmidi_in_port	in_ports_array[/* in_ports */];
@@ -358,7 +360,9 @@ static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 	/* allocate a bunch of read buffers and queue them all at once. */
 	for (i = 0; i < midi->qlen && err == 0; i++) {
 		struct usb_request *req =
-			midi_alloc_ep_req(midi->out_ep, midi->buflen);
+			midi_alloc_ep_req(midi->out_ep,
+				max_t(unsigned, midi->buflen,
+					bulk_out_desc.wMaxPacketSize));
 		if (req == NULL)
 			return -ENOMEM;
 
@@ -597,17 +601,24 @@ static void f_midi_transmit(struct f_midi *midi)
 {
 	struct usb_ep *ep = midi->in_ep;
 	int ret;
+	unsigned long flags;
 
 	/* We only care about USB requests if IN endpoint is enabled */
 	if (!ep || !ep->enabled)
 		goto drop_out;
 
+	spin_lock_irqsave(&midi->transmit_lock, flags);
+
 	do {
 		ret = f_midi_do_transmit(midi, ep);
-		if (ret < 0)
+		if (ret < 0) {
+			spin_unlock_irqrestore(&midi->transmit_lock, flags);
 			goto drop_out;
+		}
 	} while (ret);
 
+	spin_unlock_irqrestore(&midi->transmit_lock, flags);
+
 	return;
 
 drop_out:
@@ -1201,6 +1212,8 @@ static struct usb_function *f_midi_alloc(struct usb_function_instance *fi)
 	if (status)
 		goto setup_fail;
 
+	spin_lock_init(&midi->transmit_lock);
+
 	++opts->refcnt;
 	mutex_unlock(&opts->lock);
 

drivers/usb/gadget/udc/atmel_usba_udc.c

@@ -1045,20 +1045,6 @@ static void reset_all_endpoints(struct usba_udc *udc)
 		list_del_init(&req->queue);
 		request_complete(ep, req, -ECONNRESET);
 	}
-
-	/* NOTE:  normally, the next call to the gadget driver is in
-	 * charge of disabling endpoints... usually disconnect().
-	 * The exception would be entering a high speed test mode.
-	 *
-	 * FIXME remove this code ... and retest thoroughly.
-	 */
-	list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
-		if (ep->ep.desc) {
-			spin_unlock(&udc->lock);
-			usba_ep_disable(&ep->ep);
-			spin_lock(&udc->lock);
-		}
-	}
 }
 
 static struct usba_ep *get_ep_by_addr(struct usba_udc *udc, u16 wIndex)

drivers/usb/gadget/udc/udc-core.c

@@ -371,12 +371,6 @@ int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget,
 	INIT_WORK(&gadget->work, usb_gadget_state_work);
 	gadget->dev.parent = parent;
 
-#ifdef	CONFIG_HAS_DMA
-	dma_set_coherent_mask(&gadget->dev, parent->coherent_dma_mask);
-	gadget->dev.dma_parms = parent->dma_parms;
-	gadget->dev.dma_mask = parent->dma_mask;
-#endif
-
 	if (release)
 		gadget->dev.release = release;
 	else