Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 52 insertions, 70 deletions

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 7c9df630dbe..7bd815a507e 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -48,10 +48,10 @@
 #include <linux/list.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
+#include <linux/of.h>
 
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
-#include <linux/module.h>
 
 #include "core.h"
 #include "gadget.h"
@@ -86,7 +86,7 @@ again:
 		id = -ENOMEM;
 	}
 
-	return 0;
+	return id;
 }
 EXPORT_SYMBOL_GPL(dwc3_get_device_id);
 
@@ -167,11 +167,11 @@ static void dwc3_free_one_event_buffer(struct dwc3 *dwc,
 }
 
 /**
- * dwc3_alloc_one_event_buffer - Allocated one event buffer structure
+ * dwc3_alloc_one_event_buffer - Allocates one event buffer structure
  * @dwc: Pointer to our controller context structure
  * @length: size of the event buffer
  *
- * Returns a pointer to the allocated event buffer structure on succes
+ * Returns a pointer to the allocated event buffer structure on success
  * otherwise ERR_PTR(errno).
  */
 static struct dwc3_event_buffer *__devinit
@@ -215,10 +215,10 @@ static void dwc3_free_event_buffers(struct dwc3 *dwc)
 
 /**
  * dwc3_alloc_event_buffers - Allocates @num event buffers of size @length
- * @dwc: Pointer to out controller context structure
+ * @dwc: pointer to our controller context structure
  * @length: size of event buffer
  *
- * Returns 0 on success otherwise negative errno. In error the case, dwc
+ * Returns 0 on success otherwise negative errno. In the error case, dwc
  * may contain some buffers allocated but not all which were requested.
  */
 static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length)
@@ -251,7 +251,7 @@ static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length)
 
 /**
  * dwc3_event_buffers_setup - setup our allocated event buffers
- * @dwc: Pointer to out controller context structure
+ * @dwc: pointer to our controller context structure
  *
  * Returns 0 on success otherwise negative errno.
  */
@@ -350,7 +350,7 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc)
 	dwc3_cache_hwparams(dwc);
 
 	reg = dwc3_readl(dwc->regs, DWC3_GCTL);
-	reg &= ~DWC3_GCTL_SCALEDOWN(3);
+	reg &= ~DWC3_GCTL_SCALEDOWN_MASK;
 	reg &= ~DWC3_GCTL_DISSCRAMBLE;
 
 	switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) {
@@ -363,9 +363,9 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc)
 
 	/*
 	 * WORKAROUND: DWC3 revisions <1.90a have a bug
-	 * when The device fails to connect at SuperSpeed
+	 * where the device can fail to connect at SuperSpeed
 	 * and falls back to high-speed mode which causes
-	 * the device to enter in a Connect/Disconnect loop
+	 * the device to enter a Connect/Disconnect loop
 	 */
 	if (dwc->revision < DWC3_REVISION_190A)
 		reg |= DWC3_GCTL_U2RSTECN;
@@ -404,8 +404,10 @@ static void dwc3_core_exit(struct dwc3 *dwc)
 
 static int __devinit dwc3_probe(struct platform_device *pdev)
 {
+	struct device_node	*node = pdev->dev.of_node;
 	struct resource		*res;
 	struct dwc3		*dwc;
+	struct device		*dev = &pdev->dev;
 
 	int			ret = -ENOMEM;
 	int			irq;
@@ -415,39 +417,39 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
 
 	u8			mode;
 
-	mem = kzalloc(sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
+	mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
 	if (!mem) {
-		dev_err(&pdev->dev, "not enough memory\n");
-		goto err0;
+		dev_err(dev, "not enough memory\n");
+		return -ENOMEM;
 	}
 	dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);
 	dwc->mem = mem;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
-		dev_err(&pdev->dev, "missing resource\n");
-		goto err1;
+		dev_err(dev, "missing resource\n");
+		return -ENODEV;
 	}
 
 	dwc->res = res;
 
-	res = request_mem_region(res->start, resource_size(res),
-			dev_name(&pdev->dev));
+	res = devm_request_mem_region(dev, res->start, resource_size(res),
+			dev_name(dev));
 	if (!res) {
-		dev_err(&pdev->dev, "can't request mem region\n");
-		goto err1;
+		dev_err(dev, "can't request mem region\n");
+		return -ENOMEM;
 	}
 
-	regs = ioremap(res->start, resource_size(res));
+	regs = devm_ioremap(dev, res->start, resource_size(res));
 	if (!regs) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		goto err2;
+		dev_err(dev, "ioremap failed\n");
+		return -ENOMEM;
 	}
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
-		dev_err(&pdev->dev, "missing IRQ\n");
-		goto err3;
+		dev_err(dev, "missing IRQ\n");
+		return -ENODEV;
 	}
 
 	spin_lock_init(&dwc->lock);
@@ -455,7 +457,7 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
 
 	dwc->regs	= regs;
 	dwc->regs_size	= resource_size(res);
-	dwc->dev	= &pdev->dev;
+	dwc->dev	= dev;
 	dwc->irq	= irq;
 
 	if (!strncmp("super", maximum_speed, 5))
@@ -469,14 +471,17 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
 	else
 		dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
 
-	pm_runtime_enable(&pdev->dev);
-	pm_runtime_get_sync(&pdev->dev);
-	pm_runtime_forbid(&pdev->dev);
+	if (of_get_property(node, "tx-fifo-resize", NULL))
+		dwc->needs_fifo_resize = true;
+
+	pm_runtime_enable(dev);
+	pm_runtime_get_sync(dev);
+	pm_runtime_forbid(dev);
 
 	ret = dwc3_core_init(dwc);
 	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize core\n");
-		goto err3;
+		dev_err(dev, "failed to initialize core\n");
+		return ret;
 	}
 
 	mode = DWC3_MODE(dwc->hwparams.hwparams0);
@@ -486,49 +491,49 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
 		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
 		ret = dwc3_gadget_init(dwc);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to initialize gadget\n");
-			goto err4;
+			dev_err(dev, "failed to initialize gadget\n");
+			goto err1;
 		}
 		break;
 	case DWC3_MODE_HOST:
 		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
 		ret = dwc3_host_init(dwc);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to initialize host\n");
-			goto err4;
+			dev_err(dev, "failed to initialize host\n");
+			goto err1;
 		}
 		break;
 	case DWC3_MODE_DRD:
 		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG);
 		ret = dwc3_host_init(dwc);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to initialize host\n");
-			goto err4;
+			dev_err(dev, "failed to initialize host\n");
+			goto err1;
 		}
 
 		ret = dwc3_gadget_init(dwc);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to initialize gadget\n");
-			goto err4;
+			dev_err(dev, "failed to initialize gadget\n");
+			goto err1;
 		}
 		break;
 	default:
-		dev_err(&pdev->dev, "Unsupported mode of operation %d\n", mode);
-		goto err4;
+		dev_err(dev, "Unsupported mode of operation %d\n", mode);
+		goto err1;
 	}
 	dwc->mode = mode;
 
 	ret = dwc3_debugfs_init(dwc);
 	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize debugfs\n");
-		goto err5;
+		dev_err(dev, "failed to initialize debugfs\n");
+		goto err2;
 	}
 
-	pm_runtime_allow(&pdev->dev);
+	pm_runtime_allow(dev);
 
 	return 0;
 
-err5:
+err2:
 	switch (mode) {
 	case DWC3_MODE_DEVICE:
 		dwc3_gadget_exit(dwc);
@@ -545,19 +550,9 @@ err5:
 		break;
 	}
 
-err4:
-	dwc3_core_exit(dwc);
-
-err3:
-	iounmap(regs);
-
-err2:
-	release_mem_region(res->start, resource_size(res));
-
 err1:
-	kfree(dwc->mem);
+	dwc3_core_exit(dwc);
 
-err0:
 	return ret;
 }
 
@@ -590,9 +585,6 @@ static int __devexit dwc3_remove(struct platform_device *pdev)
 	}
 
 	dwc3_core_exit(dwc);
-	release_mem_region(res->start, resource_size(res));
-	iounmap(dwc->regs);
-	kfree(dwc->mem);
 
 	return 0;
 }
@@ -605,19 +597,9 @@ static struct platform_driver dwc3_driver = {
 	},
 };
 
+module_platform_driver(dwc3_driver);
+
 MODULE_ALIAS("platform:dwc3");
 MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver");
-
-static int __devinit dwc3_init(void)
-{
-	return platform_driver_register(&dwc3_driver);
-}
-module_init(dwc3_init);
-
-static void __exit dwc3_exit(void)
-{
-	platform_driver_unregister(&dwc3_driver);
-}
-module_exit(dwc3_exit);