layerscape: add patches-5.4

[openwrt/staging/wigyori.git] / target / linux / layerscape / patches-5.4 / 701-net-0146-bus-fsl-mc-DMA-configure-to-have-force-dma-as-defaul.patch

diff --git a/target/linux/layerscape/patches-5.4/701-net-0146-bus-fsl-mc-DMA-configure-to-have-force-dma-as-defaul.patch b/target/linux/layerscape/patches-5.4/701-net-0146-bus-fsl-mc-DMA-configure-to-have-force-dma-as-defaul.patch
new file mode 100644 (file)
index 0000000..c0a4d01
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0146-bus-fsl-mc-DMA-configure-to-have-force-dma-as-defaul.patch
@@ -0,0 +1,27 @@
+From b6b91c9f49f8459eab973aa3b52b4e8a3a00daa1 Mon Sep 17 00:00:00 2001
+From: Bharat Bhushan <Bharat.Bhushan@nxp.com>
+Date: Mon, 27 Aug 2018 13:22:34 +0530
+Subject: [PATCH] bus: fsl-mc: DMA configure to have force-dma as default
+
+Implicit dma setting from bus works when dma-ranges
+specified but not otherwise. We need to continue
+to go for force_dma as default for cases dma-ranges not
+specified. Example dynamic device tree generation for
+generic kvm virtual machines.
+
+Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
+---
+ drivers/bus/fsl-mc/fsl-mc-bus.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
++++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
+@@ -140,7 +140,7 @@ static int fsl_mc_dma_configure(struct d
+       while (dev_is_fsl_mc(dma_dev))
+               dma_dev = dma_dev->parent;
+ 
+-      return of_dma_configure(dev, dma_dev->of_node, 0);
++      return of_dma_configure(dev, dma_dev->of_node, 1);
+ }
+ 
+ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,