Merge branch 'linus' into core/softirqtip-core-softirq-2008-06-16_09.24_Mon

14 files changed, 86 insertions, 50 deletions

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 1ef6df395e0c..228797e54f9c 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -300,8 +300,8 @@ config USB_R8A66597_HCD
 	  module will be called r8a66597-hcd.
 
 config SUPERH_ON_CHIP_R8A66597
-	boolean "Enable SuperH on-chip USB like the R8A66597"
-	depends on USB_R8A66597_HCD && CPU_SUBTYPE_SH7366
+	boolean "Enable SuperH on-chip R8A66597 USB"
+	depends on USB_R8A66597_HCD && (CPU_SUBTYPE_SH7366 || CPU_SUBTYPE_SH7723)
 	help
-	   Renesas SuperH processor has USB like the R8A66597.
-	   This driver supported processor is SH7366.
+	   This driver enables support for the on-chip R8A66597 in the
+	   SH7366 and SH7723 processors.
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c
index 8b5f991e949c..08a4335401a9 100644
--- a/drivers/usb/host/ehci-au1xxx.c
+++ b/drivers/usb/host/ehci-au1xxx.c
@@ -223,6 +223,7 @@ static const struct hc_driver ehci_au1xxx_hc_driver = {
 	.bus_suspend = ehci_bus_suspend,
 	.bus_resume = ehci_bus_resume,
 	.relinquish_port = ehci_relinquish_port,
+	.port_handed_over = ehci_port_handed_over,
 };
 
 /*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 6d9bed6c1f48..7370d6187c64 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -269,7 +269,7 @@ static int ehci_fsl_setup(struct usb_hcd *hcd)
 	if (retval)
 		return retval;
 
-	ehci->is_tdi_rh_tt = 1;
+	hcd->has_tt = 1;
 
 	ehci->sbrn = 0x20;
 
@@ -295,10 +295,6 @@ static const struct hc_driver ehci_fsl_hc_driver = {
 	 */
 	.reset = ehci_fsl_setup,
 	.start = ehci_run,
-#ifdef	CONFIG_PM
-	.suspend = ehci_bus_suspend,
-	.resume = ehci_bus_resume,
-#endif
 	.stop = ehci_stop,
 	.shutdown = ehci_shutdown,
 
@@ -322,6 +318,7 @@ static const struct hc_driver ehci_fsl_hc_driver = {
 	.bus_suspend = ehci_bus_suspend,
 	.bus_resume = ehci_bus_resume,
 	.relinquish_port = ehci_relinquish_port,
+	.port_handed_over = ehci_port_handed_over,
 };
 
 static int ehci_fsl_drv_probe(struct platform_device *pdev)
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 382587c4457c..740835bb8575 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -609,7 +609,7 @@ static int ehci_hub_control (
 			}
 			break;
 		case USB_PORT_FEAT_C_SUSPEND:
-			/* we auto-clear this feature */
+			clear_bit(wIndex, &ehci->port_c_suspend);
 			break;
 		case USB_PORT_FEAT_POWER:
 			if (HCS_PPC (ehci->hcs_params))
@@ -688,7 +688,7 @@ static int ehci_hub_control (
 			/* resume completed? */
 			else if (time_after_eq(jiffies,
 					ehci->reset_done[wIndex])) {
-				status |= 1 << USB_PORT_FEAT_C_SUSPEND;
+				set_bit(wIndex, &ehci->port_c_suspend);
 				ehci->reset_done[wIndex] = 0;
 
 				/* stop resume signaling */
@@ -765,6 +765,8 @@ static int ehci_hub_control (
 			status |= 1 << USB_PORT_FEAT_RESET;
 		if (temp & PORT_POWER)
 			status |= 1 << USB_PORT_FEAT_POWER;
+		if (test_bit(wIndex, &ehci->port_c_suspend))
+			status |= 1 << USB_PORT_FEAT_C_SUSPEND;
 
 #ifndef	VERBOSE_DEBUG
 	if (status & ~0xffff)	/* only if wPortChange is interesting */
@@ -875,3 +877,13 @@ static void ehci_relinquish_port(struct usb_hcd *hcd, int portnum)
 	set_owner(ehci, --portnum, PORT_OWNER);
 }
 
+static int ehci_port_handed_over(struct usb_hcd *hcd, int portnum)
+{
+	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
+	u32 __iomem		*reg;
+
+	if (ehci_is_TDI(ehci))
+		return 0;
+	reg = &ehci->regs->port_status[portnum - 1];
+	return ehci_readl(ehci, reg) & PORT_OWNER;
+}
diff --git a/drivers/usb/host/ehci-ixp4xx.c b/drivers/usb/host/ehci-ixp4xx.c
index 601c8795a854..9d042f220097 100644
--- a/drivers/usb/host/ehci-ixp4xx.c
+++ b/drivers/usb/host/ehci-ixp4xx.c
@@ -26,7 +26,7 @@ static int ixp4xx_ehci_init(struct usb_hcd *hcd)
 		+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
 	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 
-	ehci->is_tdi_rh_tt = 1;
+	hcd->has_tt = 1;
 	ehci_reset(ehci);
 
 	retval = ehci_init(hcd);
@@ -58,6 +58,8 @@ static const struct hc_driver ixp4xx_ehci_hc_driver = {
 	.bus_suspend		= ehci_bus_suspend,
 	.bus_resume		= ehci_bus_resume,
 #endif
+	.relinquish_port	= ehci_relinquish_port,
+	.port_handed_over	= ehci_port_handed_over,
 };
 
 static int ixp4xx_ehci_probe(struct platform_device *pdev)
diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
index 3adfda813a7b..ab625f0ba1d9 100644
--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -139,10 +139,6 @@ static const struct hc_driver ehci_orion_hc_driver = {
 	 */
 	.reset = ehci_orion_setup,
 	.start = ehci_run,
-#ifdef CONFIG_PM
-	.suspend = ehci_bus_suspend,
-	.resume = ehci_bus_resume,
-#endif
 	.stop = ehci_stop,
 	.shutdown = ehci_shutdown,
 
@@ -165,6 +161,8 @@ static const struct hc_driver ehci_orion_hc_driver = {
 	.hub_control = ehci_hub_control,
 	.bus_suspend = ehci_bus_suspend,
 	.bus_resume = ehci_bus_resume,
+	.relinquish_port = ehci_relinquish_port,
+	.port_handed_over = ehci_port_handed_over,
 };
 
 static void __init
@@ -250,7 +248,7 @@ static int __init ehci_orion_drv_probe(struct platform_device *pdev)
 	ehci->regs = hcd->regs + 0x100 +
 		HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
 	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
-	ehci->is_tdi_rh_tt = 1;
+	hcd->has_tt = 1;
 	ehci->sbrn = 0x20;
 
 	/*
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 5bb7f6bb13f3..c46a58f9181d 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -129,7 +129,6 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
 	switch (pdev->vendor) {
 	case PCI_VENDOR_ID_TDI:
 		if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) {
-			ehci->is_tdi_rh_tt = 1;
 			hcd->has_tt = 1;
 			tdi_reset(ehci);
 		}
@@ -379,7 +378,8 @@ static const struct hc_driver ehci_pci_hc_driver = {
 	.hub_control =		ehci_hub_control,
 	.bus_suspend =		ehci_bus_suspend,
 	.bus_resume =		ehci_bus_resume,
-	.relinquish_port = 	ehci_relinquish_port,
+	.relinquish_port =	ehci_relinquish_port,
+	.port_handed_over =	ehci_port_handed_over,
 };
 
 /*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
index ee305b1f99ff..b018deed2e8f 100644
--- a/drivers/usb/host/ehci-ppc-of.c
+++ b/drivers/usb/host/ehci-ppc-of.c
@@ -76,6 +76,8 @@ static const struct hc_driver ehci_ppc_of_hc_driver = {
 	.bus_suspend		= ehci_bus_suspend,
 	.bus_resume		= ehci_bus_resume,
 #endif
+	.relinquish_port	= ehci_relinquish_port,
+	.port_handed_over	= ehci_port_handed_over,
 };
 
 
diff --git a/drivers/usb/host/ehci-ppc-soc.c b/drivers/usb/host/ehci-ppc-soc.c
index 6c76036783a1..529590eb4037 100644
--- a/drivers/usb/host/ehci-ppc-soc.c
+++ b/drivers/usb/host/ehci-ppc-soc.c
@@ -163,6 +163,7 @@ static const struct hc_driver ehci_ppc_soc_hc_driver = {
 	.bus_suspend = ehci_bus_suspend,
 	.bus_resume = ehci_bus_resume,
 	.relinquish_port = ehci_relinquish_port,
+	.port_handed_over = ehci_port_handed_over,
 };
 
 static int ehci_hcd_ppc_soc_drv_probe(struct platform_device *pdev)
diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c
index 69782221bcf3..37e6abeb794c 100644
--- a/drivers/usb/host/ehci-ps3.c
+++ b/drivers/usb/host/ehci-ps3.c
@@ -73,6 +73,7 @@ static const struct hc_driver ps3_ehci_hc_driver = {
 	.bus_resume		= ehci_bus_resume,
 #endif
 	.relinquish_port	= ehci_relinquish_port,
+	.port_handed_over	= ehci_port_handed_over,
 };
 
 static int ps3_ehci_probe(struct ps3_system_bus_device *dev)
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index be575e46eac3..b7853c8bac0f 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -1349,18 +1349,27 @@ iso_stream_schedule (
 	/* when's the last uframe this urb could start? */
 	max = now + mod;
 
-	/* typical case: reuse current schedule. stream is still active,
-	 * and no gaps from host falling behind (irq delays etc)
+	/* Typical case: reuse current schedule, stream is still active.
+	 * Hopefully there are no gaps from the host falling behind
+	 * (irq delays etc), but if there are we'll take the next
+	 * slot in the schedule, implicitly assuming URB_ISO_ASAP.
 	 */
 	if (likely (!list_empty (&stream->td_list))) {
 		start = stream->next_uframe;
 		if (start < now)
 			start += mod;
-		if (likely ((start + sched->span) < max))
-			goto ready;
-		/* else fell behind; someday, try to reschedule */
-		status = -EL2NSYNC;
-		goto fail;
+
+		/* Fell behind (by up to twice the slop amount)? */
+		if (start >= max - 2 * 8 * SCHEDULE_SLOP)
+			start += stream->interval * DIV_ROUND_UP(
+					max - start, stream->interval) - mod;
+
+		/* Tried to schedule too far into the future? */
+		if (unlikely((start + sched->span) >= max)) {
+			status = -EFBIG;
+			goto fail;
+		}
+		goto ready;
 	}
 
 	/* need to schedule; when's the next (u)frame we could start?
@@ -1613,6 +1622,9 @@ itd_complete (
 		} else if (likely ((t & EHCI_ISOC_ACTIVE) == 0)) {
 			desc->status = 0;
 			desc->actual_length = EHCI_ITD_LENGTH (t);
+		} else {
+			/* URB was too late */
+			desc->status = -EXDEV;
 		}
 	}
 
@@ -2095,7 +2107,7 @@ done:
 static void
 scan_periodic (struct ehci_hcd *ehci)
 {
-	unsigned	frame, clock, now_uframe, mod;
+	unsigned	now_uframe, frame, clock, clock_frame, mod;
 	unsigned	modified;
 
 	mod = ehci->periodic_size << 3;
@@ -2111,6 +2123,7 @@ scan_periodic (struct ehci_hcd *ehci)
 	else
 		clock = now_uframe + mod - 1;
 	clock %= mod;
+	clock_frame = clock >> 3;
 
 	for (;;) {
 		union ehci_shadow	q, *q_p;
@@ -2157,22 +2170,26 @@ restart:
 			case Q_TYPE_ITD:
 				/* If this ITD is still active, leave it for
 				 * later processing ... check the next entry.
+				 * No need to check for activity unless the
+				 * frame is current.
 				 */
-				rmb ();
-				for (uf = 0; uf < 8 && live; uf++) {
-					if (0 == (q.itd->hw_transaction [uf]
-							& ITD_ACTIVE(ehci)))
-						continue;
-					incomplete = true;
-					q_p = &q.itd->itd_next;
-					hw_p = &q.itd->hw_next;
-					type = Q_NEXT_TYPE(ehci,
+				if (frame == clock_frame && live) {
+					rmb();
+					for (uf = 0; uf < 8; uf++) {
+						if (q.itd->hw_transaction[uf] &
+							    ITD_ACTIVE(ehci))
+							break;
+					}
+					if (uf < 8) {
+						incomplete = true;
+						q_p = &q.itd->itd_next;
+						hw_p = &q.itd->hw_next;
+						type = Q_NEXT_TYPE(ehci,
 							q.itd->hw_next);
-					q = *q_p;
-					break;
+						q = *q_p;
+						break;
+					}
 				}
-				if (uf < 8 && live)
-					break;
 
 				/* Take finished ITDs out of the schedule
 				 * and process them:  recycle, maybe report
@@ -2189,9 +2206,12 @@ restart:
 			case Q_TYPE_SITD:
 				/* If this SITD is still active, leave it for
 				 * later processing ... check the next entry.
+				 * No need to check for activity unless the
+				 * frame is current.
 				 */
-				if ((q.sitd->hw_results & SITD_ACTIVE(ehci))
-						&& live) {
+				if (frame == clock_frame && live &&
+						(q.sitd->hw_results &
+							SITD_ACTIVE(ehci))) {
 					incomplete = true;
 					q_p = &q.sitd->sitd_next;
 					hw_p = &q.sitd->hw_next;
@@ -2260,6 +2280,7 @@ restart:
 
 			/* rescan the rest of this frame, then ... */
 			clock = now;
+			clock_frame = clock >> 3;
 		} else {
 			now_uframe++;
 			now_uframe %= mod;
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index bf92d209a1a9..35a03095757e 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -97,6 +97,8 @@ struct ehci_hcd {			/* one per controller */
 			dedicated to the companion controller */
 	unsigned long		owned_ports;		/* which ports are
 			owned by the companion during a bus suspend */
+	unsigned long		port_c_suspend;		/* which ports have
+			the change-suspend feature turned on */
 
 	/* per-HC memory pools (could be per-bus, but ...) */
 	struct dma_pool		*qh_pool;	/* qh per active urb */
@@ -112,7 +114,6 @@ struct ehci_hcd {			/* one per controller */
 	u32			command;
 
 	/* SILICON QUIRKS */
-	unsigned		is_tdi_rh_tt:1;	/* TDI roothub with TT */
 	unsigned		no_selective_suspend:1;
 	unsigned		has_fsl_port_bug:1; /* FreeScale */
 	unsigned		big_endian_mmio:1;
@@ -678,7 +679,7 @@ struct ehci_fstn {
  * needed (mostly in root hub code).
  */
 
-#define	ehci_is_TDI(e)			((e)->is_tdi_rh_tt)
+#define	ehci_is_TDI(e)			(ehci_to_hcd(e)->has_tt)
 
 /* Returns the speed of a device attached to a port on the root hub. */
 static inline unsigned int
diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c
index c9cec8738261..65aa5ecf569a 100644
--- a/drivers/usb/host/isp1760-hcd.c
+++ b/drivers/usb/host/isp1760-hcd.c
@@ -2207,14 +2207,14 @@ struct usb_hcd *isp1760_register(u64 res_start, u64 res_len, int irq,
 		goto err_put;
 	}
 
-	ret = usb_add_hcd(hcd, irq, irqflags);
-	if (ret)
-		goto err_unmap;
-
 	hcd->irq = irq;
 	hcd->rsrc_start = res_start;
 	hcd->rsrc_len = res_len;
 
+	ret = usb_add_hcd(hcd, irq, irqflags);
+	if (ret)
+		goto err_unmap;
+
 	return hcd;
 
 err_unmap:
diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c
index 440bf94f0d4c..c9db3fe98726 100644
--- a/drivers/usb/host/isp1760-if.c
+++ b/drivers/usb/host/isp1760-if.c
@@ -104,8 +104,8 @@ static u32 nxp_pci_io_base;
 static u32 iolength;
 static u32 pci_mem_phy0;
 static u32 length;
-static u8 *chip_addr;
-static u8 *iobase;
+static u8 __iomem *chip_addr;
+static u8 __iomem *iobase;
 
 static int __devinit isp1761_pci_probe(struct pci_dev *dev,
 		const struct pci_device_id *id)