Merge branch 'next' into for-linus

Prepare first round of input updates for 3.20.

1 files changed, 13 insertions, 15 deletions

diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c
index 8f8b0b60887..b743adf5646 100644
--- a/drivers/dma/cppi41.c
+++ b/drivers/dma/cppi41.c
@@ -1,3 +1,4 @@
+#include <linux/delay.h>
 #include <linux/dmaengine.h>
 #include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
@@ -567,7 +568,7 @@ static int cppi41_tear_down_chan(struct cppi41_channel *c)
 		reg |= GCR_TEARDOWN;
 		cppi_writel(reg, c->gcr_reg);
 		c->td_queued = 1;
-		c->td_retry = 100;
+		c->td_retry = 500;
 	}
 
 	if (!c->td_seen || !c->td_desc_seen) {
@@ -603,12 +604,16 @@ static int cppi41_tear_down_chan(struct cppi41_channel *c)
 	 * descriptor before the TD we fetch it from enqueue, it has to be
 	 * there waiting for us.
 	 */
-	if (!c->td_seen && c->td_retry)
+	if (!c->td_seen && c->td_retry) {
+		udelay(1);
 		return -EAGAIN;
-
+	}
 	WARN_ON(!c->td_retry);
+
 	if (!c->td_desc_seen) {
 		desc_phys = cppi41_pop_desc(cdd, c->q_num);
+		if (!desc_phys)
+			desc_phys = cppi41_pop_desc(cdd, c->q_comp_num);
 		WARN_ON(!desc_phys);
 	}
 
@@ -938,7 +943,7 @@ static int cppi41_dma_probe(struct platform_device *pdev)
 	if (!glue_info)
 		return -EINVAL;
 
-	cdd = kzalloc(sizeof(*cdd), GFP_KERNEL);
+	cdd = devm_kzalloc(&pdev->dev, sizeof(*cdd), GFP_KERNEL);
 	if (!cdd)
 		return -ENOMEM;
 
@@ -959,10 +964,8 @@ static int cppi41_dma_probe(struct platform_device *pdev)
 	cdd->qmgr_mem = of_iomap(dev->of_node, 3);
 
 	if (!cdd->usbss_mem || !cdd->ctrl_mem || !cdd->sched_mem ||
-			!cdd->qmgr_mem) {
-		ret = -ENXIO;
-		goto err_remap;
-	}
+			!cdd->qmgr_mem)
+		return -ENXIO;
 
 	pm_runtime_enable(dev);
 	ret = pm_runtime_get_sync(dev);
@@ -989,7 +992,7 @@ static int cppi41_dma_probe(struct platform_device *pdev)
 
 	cppi_writel(USBSS_IRQ_PD_COMP, cdd->usbss_mem + USBSS_IRQ_ENABLER);
 
-	ret = request_irq(irq, glue_info->isr, IRQF_SHARED,
+	ret = devm_request_irq(&pdev->dev, irq, glue_info->isr, IRQF_SHARED,
 			dev_name(dev), cdd);
 	if (ret)
 		goto err_irq;
@@ -1009,7 +1012,6 @@ static int cppi41_dma_probe(struct platform_device *pdev)
 err_of:
 	dma_async_device_unregister(&cdd->ddev);
 err_dma_reg:
-	free_irq(irq, cdd);
 err_irq:
 	cppi_writel(0, cdd->usbss_mem + USBSS_IRQ_CLEARR);
 	cleanup_chans(cdd);
@@ -1023,8 +1025,6 @@ err_get_sync:
 	iounmap(cdd->ctrl_mem);
 	iounmap(cdd->sched_mem);
 	iounmap(cdd->qmgr_mem);
-err_remap:
-	kfree(cdd);
 	return ret;
 }
 
@@ -1036,7 +1036,7 @@ static int cppi41_dma_remove(struct platform_device *pdev)
 	dma_async_device_unregister(&cdd->ddev);
 
 	cppi_writel(0, cdd->usbss_mem + USBSS_IRQ_CLEARR);
-	free_irq(cdd->irq, cdd);
+	devm_free_irq(&pdev->dev, cdd->irq, cdd);
 	cleanup_chans(cdd);
 	deinit_cppi41(&pdev->dev, cdd);
 	iounmap(cdd->usbss_mem);
@@ -1045,7 +1045,6 @@ static int cppi41_dma_remove(struct platform_device *pdev)
 	iounmap(cdd->qmgr_mem);
 	pm_runtime_put(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
-	kfree(cdd);
 	return 0;
 }
 
@@ -1094,7 +1093,6 @@ static struct platform_driver cpp41_dma_driver = {
 	.remove = cppi41_dma_remove,
 	.driver = {
 		.name = "cppi41-dma-engine",
-		.owner = THIS_MODULE,
 		.pm = &cppi41_pm_ops,
 		.of_match_table = of_match_ptr(cppi41_dma_ids),
 	},