These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 16 insertions, 11 deletions

diff --git a/kernel/drivers/dma/imx-dma.c b/kernel/drivers/dma/imx-dma.c
index eed405976..48d85f8b9 100644
--- a/kernel/drivers/dma/imx-dma.c
+++ b/kernel/drivers/dma/imx-dma.c
@@ -193,7 +193,7 @@ struct imxdma_filter_data {
 	int			 request;
 };
 
-static struct platform_device_id imx_dma_devtype[] = {
+static const struct platform_device_id imx_dma_devtype[] = {
 	{
 		.name = "imx1-dma",
 		.driver_data = IMX1_DMA,
@@ -1083,8 +1083,12 @@ static int __init imxdma_probe(struct platform_device *pdev)
 	if (IS_ERR(imxdma->dma_ahb))
 		return PTR_ERR(imxdma->dma_ahb);
 
-	clk_prepare_enable(imxdma->dma_ipg);
-	clk_prepare_enable(imxdma->dma_ahb);
+	ret = clk_prepare_enable(imxdma->dma_ipg);
+	if (ret)
+		return ret;
+	ret = clk_prepare_enable(imxdma->dma_ahb);
+	if (ret)
+		goto disable_dma_ipg_clk;
 
 	/* reset DMA module */
 	imx_dmav1_writel(imxdma, DCR_DRST, DMA_DCR);
@@ -1094,20 +1098,20 @@ static int __init imxdma_probe(struct platform_device *pdev)
 				       dma_irq_handler, 0, "DMA", imxdma);
 		if (ret) {
 			dev_warn(imxdma->dev, "Can't register IRQ for DMA\n");
-			goto err;
+			goto disable_dma_ahb_clk;
 		}
 
 		irq_err = platform_get_irq(pdev, 1);
 		if (irq_err < 0) {
 			ret = irq_err;
-			goto err;
+			goto disable_dma_ahb_clk;
 		}
 
 		ret = devm_request_irq(&pdev->dev, irq_err,
 				       imxdma_err_handler, 0, "DMA", imxdma);
 		if (ret) {
 			dev_warn(imxdma->dev, "Can't register ERRIRQ for DMA\n");
-			goto err;
+			goto disable_dma_ahb_clk;
 		}
 	}
 
@@ -1144,7 +1148,7 @@ static int __init imxdma_probe(struct platform_device *pdev)
 				dev_warn(imxdma->dev, "Can't register IRQ %d "
 					 "for DMA channel %d\n",
 					 irq + i, i);
-				goto err;
+				goto disable_dma_ahb_clk;
 			}
 			init_timer(&imxdmac->watchdog);
 			imxdmac->watchdog.function = &imxdma_watchdog;
@@ -1183,14 +1187,14 @@ static int __init imxdma_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, imxdma);
 
-	imxdma->dma_device.copy_align = 2; /* 2^2 = 4 bytes alignment */
+	imxdma->dma_device.copy_align = DMAENGINE_ALIGN_4_BYTES;
 	imxdma->dma_device.dev->dma_parms = &imxdma->dma_parms;
 	dma_set_max_seg_size(imxdma->dma_device.dev, 0xffffff);
 
 	ret = dma_async_device_register(&imxdma->dma_device);
 	if (ret) {
 		dev_err(&pdev->dev, "unable to register\n");
-		goto err;
+		goto disable_dma_ahb_clk;
 	}
 
 	if (pdev->dev.of_node) {
@@ -1206,9 +1210,10 @@ static int __init imxdma_probe(struct platform_device *pdev)
 
 err_of_dma_controller:
 	dma_async_device_unregister(&imxdma->dma_device);
-err:
-	clk_disable_unprepare(imxdma->dma_ipg);
+disable_dma_ahb_clk:
 	clk_disable_unprepare(imxdma->dma_ahb);
+disable_dma_ipg_clk:
+	clk_disable_unprepare(imxdma->dma_ipg);
 	return ret;
 }