Merge tag 'usb-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some USB and PHY fixes for 4.2-rc6 that resolve some reported
  issues.

  All of these have been in the linux-next tree for a while, full
  details on the patches are in the shortlog below"

* tag 'usb-4.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  ARM: dts: dra7: Add syscon-pllreset syscon to SATA PHY
  drivers/usb: Delete XHCI command timer if necessary
  xhci: fix off by one error in TRB DMA address boundary check
  usb: udc: core: add device_del() call to error pathway
  phy: ti-pipe3: i783 workaround for SATA lockup after dpll unlock/relock
  phy-sun4i-usb: Add missing EXPORT_SYMBOL_GPL for sun4i_usb_phy_set_squelch_detect
  USB: sierra: add 1199:68AB device ID
  usb: gadget: f_printer: actually limit the number of instances
  usb: gadget: f_hid: actually limit the number of instances
  usb: gadget: f_uac2: fix calculation of uac2->p_interval
  usb: gadget: bdc: fix a driver crash on disconnect
  usb: chipidea: ehci_init_driver is intended to call one time
  USB: qcserial: Add support for Dell Wireless 5809e 4G Modem
  USB: qcserial/option: make AT URCs work for Sierra Wireless MC7305/MC7355

15 files changed, 103 insertions, 16 deletions

diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index e17c539e4f6f..2dad7e820ff0 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -212,6 +212,7 @@ void sun4i_usb_phy_set_squelch_detect(struct phy *_phy, bool enabled)
 
 	sun4i_usb_phy_write(phy, PHY_SQUELCH_DETECT, enabled ? 0 : 2, 2);
 }
+EXPORT_SYMBOL_GPL(sun4i_usb_phy_set_squelch_detect);
 
 static struct phy_ops sun4i_usb_phy_ops = {
 	.init		= sun4i_usb_phy_init,
diff --git a/drivers/phy/phy-ti-pipe3.c b/drivers/phy/phy-ti-pipe3.c
index 3510b81db3fa..08020dc2c7c8 100644
--- a/drivers/phy/phy-ti-pipe3.c
+++ b/drivers/phy/phy-ti-pipe3.c
@@ -28,6 +28,8 @@
 #include <linux/delay.h>
 #include <linux/phy/omap_control_phy.h>
 #include <linux/of_platform.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
 
 #define	PLL_STATUS		0x00000004
 #define	PLL_GO			0x00000008
@@ -52,6 +54,8 @@
 #define	PLL_LOCK		0x2
 #define	PLL_IDLE		0x1
 
+#define SATA_PLL_SOFT_RESET	BIT(18)
+
 /*
  * This is an Empirical value that works, need to confirm the actual
  * value required for the PIPE3PHY_PLL_CONFIGURATION2.PLL_IDLE status
@@ -82,6 +86,9 @@ struct ti_pipe3 {
 	struct clk		*refclk;
 	struct clk		*div_clk;
 	struct pipe3_dpll_map	*dpll_map;
+	struct regmap		*dpll_reset_syscon; /* ctrl. reg. acces */
+	unsigned int		dpll_reset_reg; /* reg. index within syscon */
+	bool			sata_refclk_enabled;
 };
 
 static struct pipe3_dpll_map dpll_map_usb[] = {
@@ -249,8 +256,11 @@ static int ti_pipe3_exit(struct phy *x)
 	u32 val;
 	unsigned long timeout;
 
-	/* SATA DPLL can't be powered down due to Errata i783 */
-	if (of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-sata"))
+	/* If dpll_reset_syscon is not present we wont power down SATA DPLL
+	 * due to Errata i783
+	 */
+	if (of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-sata") &&
+	    !phy->dpll_reset_syscon)
 		return 0;
 
 	/* PCIe doesn't have internal DPLL */
@@ -276,6 +286,14 @@ static int ti_pipe3_exit(struct phy *x)
 		}
 	}
 
+	/* i783: SATA needs control bit toggle after PLL unlock */
+	if (of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-sata")) {
+		regmap_update_bits(phy->dpll_reset_syscon, phy->dpll_reset_reg,
+				   SATA_PLL_SOFT_RESET, SATA_PLL_SOFT_RESET);
+		regmap_update_bits(phy->dpll_reset_syscon, phy->dpll_reset_reg,
+				   SATA_PLL_SOFT_RESET, 0);
+	}
+
 	ti_pipe3_disable_clocks(phy);
 
 	return 0;
@@ -350,6 +368,21 @@ static int ti_pipe3_probe(struct platform_device *pdev)
 		}
 	} else {
 		phy->wkupclk = ERR_PTR(-ENODEV);
+		phy->dpll_reset_syscon = syscon_regmap_lookup_by_phandle(node,
+							"syscon-pllreset");
+		if (IS_ERR(phy->dpll_reset_syscon)) {
+			dev_info(&pdev->dev,
+				 "can't get syscon-pllreset, sata dpll won't idle\n");
+			phy->dpll_reset_syscon = NULL;
+		} else {
+			if (of_property_read_u32_index(node,
+						       "syscon-pllreset", 1,
+						       &phy->dpll_reset_reg)) {
+				dev_err(&pdev->dev,
+					"couldn't get pllreset reg. offset\n");
+				return -EINVAL;
+			}
+		}
 	}
 
 	if (of_device_is_compatible(node, "ti,phy-pipe3-pcie")) {
@@ -402,10 +435,16 @@ static int ti_pipe3_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, phy);
 	pm_runtime_enable(phy->dev);
-	/* Prevent auto-disable of refclk for SATA PHY due to Errata i783 */
-	if (of_device_is_compatible(node, "ti,phy-pipe3-sata"))
-		if (!IS_ERR(phy->refclk))
+
+	/*
+	 * Prevent auto-disable of refclk for SATA PHY due to Errata i783
+	 */
+	if (of_device_is_compatible(node, "ti,phy-pipe3-sata")) {
+		if (!IS_ERR(phy->refclk)) {
 			clk_prepare_enable(phy->refclk);
+			phy->sata_refclk_enabled = true;
+		}
+	}
 
 	generic_phy = devm_phy_create(phy->dev, NULL, &ops);
 	if (IS_ERR(generic_phy))
@@ -472,8 +511,18 @@ static void ti_pipe3_disable_clocks(struct ti_pipe3 *phy)
 {
 	if (!IS_ERR(phy->wkupclk))
 		clk_disable_unprepare(phy->wkupclk);
-	if (!IS_ERR(phy->refclk))
+	if (!IS_ERR(phy->refclk)) {
 		clk_disable_unprepare(phy->refclk);
+		/*
+		 * SATA refclk needs an additional disable as we left it
+		 * on in probe to avoid Errata i783
+		 */
+		if (phy->sata_refclk_enabled) {
+			clk_disable_unprepare(phy->refclk);
+			phy->sata_refclk_enabled = false;
+		}
+	}
+
 	if (!IS_ERR(phy->div_clk))
 		clk_disable_unprepare(phy->div_clk);
 }
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 74fea4fa41b1..3ad48e1c0c57 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -1024,7 +1024,18 @@ static struct platform_driver ci_hdrc_driver = {
 	},
 };
 
-module_platform_driver(ci_hdrc_driver);
+static int __init ci_hdrc_platform_register(void)
+{
+	ci_hdrc_host_driver_init();
+	return platform_driver_register(&ci_hdrc_driver);
+}
+module_init(ci_hdrc_platform_register);
+
+static void __exit ci_hdrc_platform_unregister(void)
+{
+	platform_driver_unregister(&ci_hdrc_driver);
+}
+module_exit(ci_hdrc_platform_unregister);
 
 MODULE_ALIAS("platform:ci_hdrc");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 6cf87b8b13a8..7161439def19 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -249,9 +249,12 @@ int ci_hdrc_host_init(struct ci_hdrc *ci)
 	rdrv->name	= "host";
 	ci->roles[CI_ROLE_HOST] = rdrv;
 
+	return 0;
+}
+
+void ci_hdrc_host_driver_init(void)
+{
 	ehci_init_driver(&ci_ehci_hc_driver, &ehci_ci_overrides);
 	orig_bus_suspend = ci_ehci_hc_driver.bus_suspend;
 	ci_ehci_hc_driver.bus_suspend = ci_ehci_bus_suspend;
-
-	return 0;
 }
diff --git a/drivers/usb/chipidea/host.h b/drivers/usb/chipidea/host.h
index 5707bf379bfb..0f12f131bdd3 100644
--- a/drivers/usb/chipidea/host.h
+++ b/drivers/usb/chipidea/host.h
@@ -5,6 +5,7 @@
 
 int ci_hdrc_host_init(struct ci_hdrc *ci);
 void ci_hdrc_host_destroy(struct ci_hdrc *ci);
+void ci_hdrc_host_driver_init(void);
 
 #else
 
@@ -18,6 +19,11 @@ static inline void ci_hdrc_host_destroy(struct ci_hdrc *ci)
 
 }
 
+static void ci_hdrc_host_driver_init(void)
+{
+
+}
+
 #endif
 
 #endif /* __DRIVERS_USB_CHIPIDEA_HOST_H */
diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
index f7f35a36c09a..6df9715a4bcd 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -699,6 +699,10 @@ static inline int hidg_get_minor(void)
 	int ret;
 
 	ret = ida_simple_get(&hidg_ida, 0, 0, GFP_KERNEL);
+	if (ret >= HIDG_MINORS) {
+		ida_simple_remove(&hidg_ida, ret);
+		ret = -ENODEV;
+	}
 
 	return ret;
 }
diff --git a/drivers/usb/gadget/function/f_printer.c b/drivers/usb/gadget/function/f_printer.c
index 44173df27273..357f63f47b42 100644
--- a/drivers/usb/gadget/function/f_printer.c
+++ b/drivers/usb/gadget/function/f_printer.c
@@ -1248,7 +1248,15 @@ static struct config_item_type printer_func_type = {
 
 static inline int gprinter_get_minor(void)
 {
-	return ida_simple_get(&printer_ida, 0, 0, GFP_KERNEL);
+	int ret;
+
+	ret = ida_simple_get(&printer_ida, 0, 0, GFP_KERNEL);
+	if (ret >= PRINTER_MINORS) {
+		ida_simple_remove(&printer_ida, ret);
+		ret = -ENODEV;
+	}
+
+	return ret;
 }
 
 static inline void gprinter_put_minor(int minor)
diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c
index 6d3eb8b00a48..531861547253 100644
--- a/drivers/usb/gadget/function/f_uac2.c
+++ b/drivers/usb/gadget/function/f_uac2.c
@@ -1162,14 +1162,14 @@ afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt)
 			factor = 1000;
 		} else {
 			ep_desc = &hs_epin_desc;
-			factor = 125;
+			factor = 8000;
 		}
 
 		/* pre-compute some values for iso_complete() */
 		uac2->p_framesize = opts->p_ssize *
 				    num_channels(opts->p_chmask);
 		rate = opts->p_srate * uac2->p_framesize;
-		uac2->p_interval = (1 << (ep_desc->bInterval - 1)) * factor;
+		uac2->p_interval = factor / (1 << (ep_desc->bInterval - 1));
 		uac2->p_pktsize = min_t(unsigned int, rate / uac2->p_interval,
 					prm->max_psize);
 
diff --git a/drivers/usb/gadget/udc/bdc/bdc_ep.c b/drivers/usb/gadget/udc/bdc/bdc_ep.c
index b04980cf6dc4..1efa61265d8d 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_ep.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_ep.c
@@ -779,7 +779,7 @@ static int ep_dequeue(struct bdc_ep *ep, struct bdc_req *req)
 	/* The current hw dequeue pointer */
 	tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS0(0));
 	deq_ptr_64 = tmp_32;
-	tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS0(1));
+	tmp_32 = bdc_readl(bdc->regs, BDC_EPSTS1(0));
 	deq_ptr_64 |= ((u64)tmp_32 << 32);
 
 	/* we have the dma addr of next bd that will be fetched by hardware */
diff --git a/drivers/usb/gadget/udc/udc-core.c b/drivers/usb/gadget/udc/udc-core.c
index 362ee8af5fce..89ed5e71a199 100644
--- a/drivers/usb/gadget/udc/udc-core.c
+++ b/drivers/usb/gadget/udc/udc-core.c
@@ -323,6 +323,7 @@ err4:
 
 err3:
 	put_device(&udc->dev);
+	device_del(&gadget->dev);
 
 err2:
 	put_device(&gadget->dev);
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 3e442f77a2b9..9a8c936cd42c 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1792,7 +1792,8 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
 	int size;
 	int i, j, num_ports;
 
-	del_timer_sync(&xhci->cmd_timer);
+	if (timer_pending(&xhci->cmd_timer))
+		del_timer_sync(&xhci->cmd_timer);
 
 	/* Free the Event Ring Segment Table and the actual Event Ring */
 	size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries);
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 6a8fc52aed58..32f4d564494a 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -82,7 +82,7 @@ dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg,
 		return 0;
 	/* offset in TRBs */
 	segment_offset = trb - seg->trbs;
-	if (segment_offset > TRBS_PER_SEGMENT)
+	if (segment_offset >= TRBS_PER_SEGMENT)
 		return 0;
 	return seg->dma + (segment_offset * sizeof(*trb));
 }
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 19b85ee98a72..876423b8892c 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -1099,6 +1099,8 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 */
 	{ USB_DEVICE_INTERFACE_CLASS(SIERRA_VENDOR_ID, 0x68c0, 0xff),
 	  .driver_info = (kernel_ulong_t)&sierra_mc73xx_blacklist }, /* MC73xx */
+	{ USB_DEVICE_INTERFACE_CLASS(SIERRA_VENDOR_ID, 0x9041, 0xff),
+	  .driver_info = (kernel_ulong_t)&sierra_mc73xx_blacklist }, /* MC7305/MC7355 */
 	{ USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6001) },
 	{ USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CMU_300) },
 	{ USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6003),
diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
index 9c63897b3a56..d156545728c2 100644
--- a/drivers/usb/serial/qcserial.c
+++ b/drivers/usb/serial/qcserial.c
@@ -145,7 +145,6 @@ static const struct usb_device_id id_table[] = {
 	{DEVICE_SWI(0x1199, 0x901c)},	/* Sierra Wireless EM7700 */
 	{DEVICE_SWI(0x1199, 0x901f)},	/* Sierra Wireless EM7355 */
 	{DEVICE_SWI(0x1199, 0x9040)},	/* Sierra Wireless Modem */
-	{DEVICE_SWI(0x1199, 0x9041)},	/* Sierra Wireless MC7305/MC7355 */
 	{DEVICE_SWI(0x1199, 0x9051)},	/* Netgear AirCard 340U */
 	{DEVICE_SWI(0x1199, 0x9053)},	/* Sierra Wireless Modem */
 	{DEVICE_SWI(0x1199, 0x9054)},	/* Sierra Wireless Modem */
@@ -158,6 +157,7 @@ static const struct usb_device_id id_table[] = {
 	{DEVICE_SWI(0x413c, 0x81a4)},	/* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
 	{DEVICE_SWI(0x413c, 0x81a8)},	/* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
 	{DEVICE_SWI(0x413c, 0x81a9)},	/* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
+	{DEVICE_SWI(0x413c, 0x81b1)},	/* Dell Wireless 5809e Gobi(TM) 4G LTE Mobile Broadband Card */
 
 	/* Huawei devices */
 	{DEVICE_HWI(0x03f0, 0x581d)},	/* HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) */
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 46179a0828eb..07d1ecd564f7 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -289,6 +289,7 @@ static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68AA, 0xFF, 0xFF, 0xFF),
 	  .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
 	},
+	{ USB_DEVICE(0x1199, 0x68AB) }, /* Sierra Wireless AR8550 */
 	/* AT&T Direct IP LTE modems */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF),
 	  .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist