Merge tag 'usb-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB driver fixes from Greg KH:
 "Here are some small USB driver fixes and new device ids for 6.12-rc4:

   - xhci driver fixes for a number of reported issues

   - new usb-serial driver ids

   - dwc3 driver fixes for reported problems.

   - usb gadget driver fixes for reported problems

   - typec driver fixes

   - MAINTAINER file updates

  All of these have been in linux-next this week with no reported issues"

* tag 'usb-6.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: serial: option: add Telit FN920C04 MBIM compositions
  USB: serial: option: add support for Quectel EG916Q-GL
  xhci: dbc: honor usb transfer size boundaries.
  usb: xhci: Fix handling errors mid TD followed by other errors
  xhci: Mitigate failed set dequeue pointer commands
  xhci: Fix incorrect stream context type macro
  USB: gadget: dummy-hcd: Fix "task hung" problem
  usb: gadget: f_uac2: fix return value for UAC2_ATTRIBUTE_STRING store
  usb: dwc3: core: Fix system suspend on TI AM62 platforms
  xhci: tegra: fix checked USB2 port number
  usb: dwc3: Wait for EndXfer completion before restoring GUSB2PHYCFG
  usb: typec: qcom-pmic-typec: fix sink status being overwritten with RP_DEF
  usb: typec: altmode should keep reference to parent
  MAINTAINERS: usb: raw-gadget: add bug tracker link
  MAINTAINERS: Add an entry for the LJCA drivers

Author: torvalds

MAINTAINERS

@@ -11604,6 +11604,16 @@ F:	drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c
 F:	drivers/crypto/intel/keembay/ocs-hcu.c
 F:	drivers/crypto/intel/keembay/ocs-hcu.h
 
+INTEL LA JOLLA COVE ADAPTER (LJCA) USB I/O EXPANDER DRIVERS
+M:	Wentong Wu <wentong.wu@intel.com>
+M:	Sakari Ailus <sakari.ailus@linux.intel.com>
+S:	Maintained
+F:	drivers/gpio/gpio-ljca.c
+F:	drivers/i2c/busses/i2c-ljca.c
+F:	drivers/spi/spi-ljca.c
+F:	drivers/usb/misc/usb-ljca.c
+F:	include/linux/usb/ljca.h
+
 INTEL MANAGEMENT ENGINE (mei)
 M:	Tomas Winkler <tomas.winkler@intel.com>
 L:	linux-kernel@vger.kernel.org
@@ -24078,6 +24088,7 @@ USB RAW GADGET DRIVER
 R:	Andrey Konovalov <andreyknvl@gmail.com>
 L:	linux-usb@vger.kernel.org
 S:	Maintained
+B:	https://github.com/xairy/raw-gadget/issues
 F:	Documentation/usb/raw-gadget.rst
 F:	drivers/usb/gadget/legacy/raw_gadget.c
 F:	include/uapi/linux/usb/raw_gadget.h

drivers/usb/dwc3/core.c

@@ -2342,6 +2342,11 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg)
 	u32 reg;
 	int i;
 
+	dwc->susphy_state = (dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0)) &
+			    DWC3_GUSB2PHYCFG_SUSPHY) ||
+			    (dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)) &
+			    DWC3_GUSB3PIPECTL_SUSPHY);
+
 	switch (dwc->current_dr_role) {
 	case DWC3_GCTL_PRTCAP_DEVICE:
 		if (pm_runtime_suspended(dwc->dev))
@@ -2393,6 +2398,15 @@ static int dwc3_suspend_common(struct dwc3 *dwc, pm_message_t msg)
 		break;
 	}
 
+	if (!PMSG_IS_AUTO(msg)) {
+		/*
+		 * TI AM62 platform requires SUSPHY to be
+		 * enabled for system suspend to work.
+		 */
+		if (!dwc->susphy_state)
+			dwc3_enable_susphy(dwc, true);
+	}
+
 	return 0;
 }
 
@@ -2460,6 +2474,11 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg)
 		break;
 	}
 
+	if (!PMSG_IS_AUTO(msg)) {
+		/* restore SUSPHY state to that before system suspend. */
+		dwc3_enable_susphy(dwc, dwc->susphy_state);
+	}
+
 	return 0;
 }
 

drivers/usb/dwc3/core.h

@@ -1150,6 +1150,8 @@ struct dwc3_scratchpad_array {
  * @sys_wakeup: set if the device may do system wakeup.
  * @wakeup_configured: set if the device is configured for remote wakeup.
  * @suspended: set to track suspend event due to U3/L2.
+ * @susphy_state: state of DWC3_GUSB2PHYCFG_SUSPHY + DWC3_GUSB3PIPECTL_SUSPHY
+ *		  before PM suspend.
  * @imod_interval: set the interrupt moderation interval in 250ns
  *			increments or 0 to disable.
  * @max_cfg_eps: current max number of IN eps used across all USB configs.
@@ -1382,6 +1384,7 @@ struct dwc3 {
 	unsigned		sys_wakeup:1;
 	unsigned		wakeup_configured:1;
 	unsigned		suspended:1;
+	unsigned		susphy_state:1;
 
 	u16			imod_interval;
 

drivers/usb/dwc3/gadget.c

@@ -438,6 +438,10 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
 			dwc3_gadget_ep_get_transfer_index(dep);
 	}
 
+	if (DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_ENDTRANSFER &&
+	    !(cmd & DWC3_DEPCMD_CMDIOC))
+		mdelay(1);
+
 	if (saved_config) {
 		reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
 		reg |= saved_config;
@@ -1715,12 +1719,10 @@ static int __dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force, bool int
 	WARN_ON_ONCE(ret);
 	dep->resource_index = 0;
 
-	if (!interrupt) {
-		mdelay(1);
+	if (!interrupt)
 		dep->flags &= ~DWC3_EP_TRANSFER_STARTED;
-	} else if (!ret) {
+	else if (!ret)
 		dep->flags |= DWC3_EP_END_TRANSFER_PENDING;
-	}
 
 	dep->flags &= ~DWC3_EP_DELAY_STOP;
 	return ret;

drivers/usb/gadget/function/f_uac2.c

@@ -2061,7 +2061,7 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item,	\
 					  const char *page, size_t len)	\
 {									\
 	struct f_uac2_opts *opts = to_f_uac2_opts(item);		\
-	int ret = 0;							\
+	int ret = len;							\
 									\
 	mutex_lock(&opts->lock);					\
 	if (opts->refcnt) {						\
@@ -2072,8 +2072,8 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item,	\
 	if (len && page[len - 1] == '\n')				\
 		len--;							\
 									\
-	ret = scnprintf(opts->name, min(sizeof(opts->name), len + 1),	\
-			"%s", page);					\
+	scnprintf(opts->name, min(sizeof(opts->name), len + 1),		\
+		  "%s", page);						\
 									\
 end:									\
 	mutex_unlock(&opts->lock);					\

drivers/usb/gadget/udc/dummy_hcd.c

@@ -254,6 +254,7 @@ struct dummy_hcd {
 	u32				stream_en_ep;
 	u8				num_stream[30 / 2];
 
+	unsigned			timer_pending:1;
 	unsigned			active:1;
 	unsigned			old_active:1;
 	unsigned			resuming:1;
@@ -1303,9 +1304,11 @@ static int dummy_urb_enqueue(
 		urb->error_count = 1;		/* mark as a new urb */
 
 	/* kick the scheduler, it'll do the rest */
-	if (!hrtimer_active(&dum_hcd->timer))
+	if (!dum_hcd->timer_pending) {
+		dum_hcd->timer_pending = 1;
 		hrtimer_start(&dum_hcd->timer, ns_to_ktime(DUMMY_TIMER_INT_NSECS),
 				HRTIMER_MODE_REL_SOFT);
+	}
 
  done:
 	spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
@@ -1324,9 +1327,10 @@ static int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
 	spin_lock_irqsave(&dum_hcd->dum->lock, flags);
 
 	rc = usb_hcd_check_unlink_urb(hcd, urb, status);
-	if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING &&
-			!list_empty(&dum_hcd->urbp_list))
+	if (rc == 0 && !dum_hcd->timer_pending) {
+		dum_hcd->timer_pending = 1;
 		hrtimer_start(&dum_hcd->timer, ns_to_ktime(0), HRTIMER_MODE_REL_SOFT);
+	}
 
 	spin_unlock_irqrestore(&dum_hcd->dum->lock, flags);
 	return rc;
@@ -1813,6 +1817,7 @@ static enum hrtimer_restart dummy_timer(struct hrtimer *t)
 
 	/* look at each urb queued by the host side driver */
 	spin_lock_irqsave(&dum->lock, flags);
+	dum_hcd->timer_pending = 0;
 
 	if (!dum_hcd->udev) {
 		dev_err(dummy_dev(dum_hcd),
@@ -1994,8 +1999,10 @@ static enum hrtimer_restart dummy_timer(struct hrtimer *t)
 	if (list_empty(&dum_hcd->urbp_list)) {
 		usb_put_dev(dum_hcd->udev);
 		dum_hcd->udev = NULL;
-	} else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) {
+	} else if (!dum_hcd->timer_pending &&
+			dum_hcd->rh_state == DUMMY_RH_RUNNING) {
 		/* want a 1 msec delay here */
+		dum_hcd->timer_pending = 1;
 		hrtimer_start(&dum_hcd->timer, ns_to_ktime(DUMMY_TIMER_INT_NSECS),
 				HRTIMER_MODE_REL_SOFT);
 	}
@@ -2390,8 +2397,10 @@ static int dummy_bus_resume(struct usb_hcd *hcd)
 	} else {
 		dum_hcd->rh_state = DUMMY_RH_RUNNING;
 		set_link_state(dum_hcd);
-		if (!list_empty(&dum_hcd->urbp_list))
+		if (!list_empty(&dum_hcd->urbp_list)) {
+			dum_hcd->timer_pending = 1;
 			hrtimer_start(&dum_hcd->timer, ns_to_ktime(0), HRTIMER_MODE_REL_SOFT);
+		}
 		hcd->state = HC_STATE_RUNNING;
 	}
 	spin_unlock_irq(&dum_hcd->dum->lock);
@@ -2522,6 +2531,7 @@ static void dummy_stop(struct usb_hcd *hcd)
 	struct dummy_hcd	*dum_hcd = hcd_to_dummy_hcd(hcd);
 
 	hrtimer_cancel(&dum_hcd->timer);
+	dum_hcd->timer_pending = 0;
 	device_remove_file(dummy_dev(dum_hcd), &dev_attr_urbs);
 	dev_info(dummy_dev(dum_hcd), "stopped\n");
 }

drivers/usb/host/xhci-dbgcap.h

@@ -110,6 +110,7 @@ struct dbc_port {
 	struct tasklet_struct		push;
 
 	struct list_head		write_pool;
+	unsigned int			tx_boundary;
 
 	bool				registered;
 };

drivers/usb/host/xhci-dbgtty.c

@@ -24,6 +24,29 @@ static inline struct dbc_port *dbc_to_port(struct xhci_dbc *dbc)
 	return dbc->priv;
 }
 
+static unsigned int
+dbc_kfifo_to_req(struct dbc_port *port, char *packet)
+{
+	unsigned int	len;
+
+	len = kfifo_len(&port->port.xmit_fifo);
+
+	if (len == 0)
+		return 0;
+
+	len = min(len, DBC_MAX_PACKET);
+
+	if (port->tx_boundary)
+		len = min(port->tx_boundary, len);
+
+	len = kfifo_out(&port->port.xmit_fifo, packet, len);
+
+	if (port->tx_boundary)
+		port->tx_boundary -= len;
+
+	return len;
+}
+
 static int dbc_start_tx(struct dbc_port *port)
 	__releases(&port->port_lock)
 	__acquires(&port->port_lock)
@@ -36,7 +59,7 @@ static int dbc_start_tx(struct dbc_port *port)
 
 	while (!list_empty(pool)) {
 		req = list_entry(pool->next, struct dbc_request, list_pool);
-		len = kfifo_out(&port->port.xmit_fifo, req->buf, DBC_MAX_PACKET);
+		len = dbc_kfifo_to_req(port, req->buf);
 		if (len == 0)
 			break;
 		do_tty_wake = true;
@@ -200,14 +223,32 @@ static ssize_t dbc_tty_write(struct tty_struct *tty, const u8 *buf,
 {
 	struct dbc_port		*port = tty->driver_data;
 	unsigned long		flags;
+	unsigned int		written = 0;
 
 	spin_lock_irqsave(&port->port_lock, flags);
-	if (count)
-		count = kfifo_in(&port->port.xmit_fifo, buf, count);
-	dbc_start_tx(port);
+
+	/*
+	 * Treat tty write as one usb transfer. Make sure the writes are turned
+	 * into TRB request having the same size boundaries as the tty writes.
+	 * Don't add data to kfifo before previous write is turned into TRBs
+	 */
+	if (port->tx_boundary) {
+		spin_unlock_irqrestore(&port->port_lock, flags);
+		return 0;
+	}
+
+	if (count) {
+		written = kfifo_in(&port->port.xmit_fifo, buf, count);
+
+		if (written == count)
+			port->tx_boundary = kfifo_len(&port->port.xmit_fifo);
+
+		dbc_start_tx(port);
+	}
+
 	spin_unlock_irqrestore(&port->port_lock, flags);
 
-	return count;
+	return written;
 }
 
 static int dbc_tty_put_char(struct tty_struct *tty, u8 ch)
@@ -241,6 +282,10 @@ static unsigned int dbc_tty_write_room(struct tty_struct *tty)
 
 	spin_lock_irqsave(&port->port_lock, flags);
 	room = kfifo_avail(&port->port.xmit_fifo);
+
+	if (port->tx_boundary)
+		room = 0;
+
 	spin_unlock_irqrestore(&port->port_lock, flags);
 
 	return room;

drivers/usb/host/xhci-ring.c

@@ -1023,7 +1023,7 @@ static int xhci_invalidate_cancelled_tds(struct xhci_virt_ep *ep)
 					td_to_noop(xhci, ring, cached_td, false);
 					cached_td->cancel_status = TD_CLEARED;
 				}
-
+				td_to_noop(xhci, ring, td, false);
 				td->cancel_status = TD_CLEARING_CACHE;
 				cached_td = td;
 				break;
@@ -2775,6 +2775,29 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		return 0;
 	}
 
+	/*
+	 * xhci 4.10.2 states isoc endpoints should continue
+	 * processing the next TD if there was an error mid TD.
+	 * So host like NEC don't generate an event for the last
+	 * isoc TRB even if the IOC flag is set.
+	 * xhci 4.9.1 states that if there are errors in mult-TRB
+	 * TDs xHC should generate an error for that TRB, and if xHC
+	 * proceeds to the next TD it should genete an event for
+	 * any TRB with IOC flag on the way. Other host follow this.
+	 *
+	 * We wait for the final IOC event, but if we get an event
+	 * anywhere outside this TD, just give it back already.
+	 */
+	td = list_first_entry_or_null(&ep_ring->td_list, struct xhci_td, td_list);
+
+	if (td && td->error_mid_td && !trb_in_td(xhci, td, ep_trb_dma, false)) {
+		xhci_dbg(xhci, "Missing TD completion event after mid TD error\n");
+		ep_ring->dequeue = td->last_trb;
+		ep_ring->deq_seg = td->last_trb_seg;
+		inc_deq(xhci, ep_ring);
+		xhci_td_cleanup(xhci, td, ep_ring, td->status);
+	}
+
 	if (list_empty(&ep_ring->td_list)) {
 		/*
 		 * Don't print wanings if ring is empty due to a stopped endpoint generating an
@@ -2836,44 +2859,13 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 				return 0;
 			}
 
-			/*
-			 * xhci 4.10.2 states isoc endpoints should continue
-			 * processing the next TD if there was an error mid TD.
-			 * So host like NEC don't generate an event for the last
-			 * isoc TRB even if the IOC flag is set.
-			 * xhci 4.9.1 states that if there are errors in mult-TRB
-			 * TDs xHC should generate an error for that TRB, and if xHC
-			 * proceeds to the next TD it should genete an event for
-			 * any TRB with IOC flag on the way. Other host follow this.
-			 * So this event might be for the next TD.
-			 */
-			if (td->error_mid_td &&
-			    !list_is_last(&td->td_list, &ep_ring->td_list)) {
-				struct xhci_td *td_next = list_next_entry(td, td_list);
-
-				ep_seg = trb_in_td(xhci, td_next, ep_trb_dma, false);
-				if (ep_seg) {
-					/* give back previous TD, start handling new */
-					xhci_dbg(xhci, "Missing TD completion event after mid TD error\n");
-					ep_ring->dequeue = td->last_trb;
-					ep_ring->deq_seg = td->last_trb_seg;
-					inc_deq(xhci, ep_ring);
-					xhci_td_cleanup(xhci, td, ep_ring, td->status);
-					td = td_next;
-				}
-			}
-
-			if (!ep_seg) {
-				/* HC is busted, give up! */
-				xhci_err(xhci,
-					"ERROR Transfer event TRB DMA ptr not "
-					"part of current TD ep_index %d "
-					"comp_code %u\n", ep_index,
-					trb_comp_code);
-				trb_in_td(xhci, td, ep_trb_dma, true);
+			/* HC is busted, give up! */
+			xhci_err(xhci,
+				 "ERROR Transfer event TRB DMA ptr not part of current TD ep_index %d comp_code %u\n",
+				 ep_index, trb_comp_code);
+			trb_in_td(xhci, td, ep_trb_dma, true);
 
-				return -ESHUTDOWN;
-			}
+			return -ESHUTDOWN;
 		}
 
 		if (ep->skip) {

drivers/usb/host/xhci-tegra.c

@@ -2183,7 +2183,7 @@ static int tegra_xusb_enter_elpg(struct tegra_xusb *tegra, bool runtime)
 		goto out;
 	}
 
-	for (i = 0; i < tegra->num_usb_phys; i++) {
+	for (i = 0; i < xhci->usb2_rhub.num_ports; i++) {
 		if (!xhci->usb2_rhub.ports[i])
 			continue;
 		portsc = readl(xhci->usb2_rhub.ports[i]->addr);