[PATCH 5/6] dma-mapping: support fsl-mc bus
From: Nipun Gupta <hidden>
Date: 2018-03-05 14:29:25
Also in:
linux-arm-kernel, linux-devicetree, linux-iommu, lkml
Subsystem:
driver core, kobjects, debugfs and sysfs, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
Signed-off-by: Nipun Gupta <redacted> --- drivers/base/dma-mapping.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
index 3b11835..2279c4d 100644
--- a/drivers/base/dma-mapping.c
+++ b/drivers/base/dma-mapping.c@@ -334,6 +334,7 @@ void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags) * Common configuration to enable DMA API use for a device */ #include <linux/pci.h> +#include <linux/fsl/mc.h> int dma_configure(struct device *dev) {
@@ -349,6 +350,12 @@ int dma_configure(struct device *dev) dma_dev = dma_dev->parent; } + if (dev_is_fsl_mc(dev)) { + dma_dev = dev; + while (dev_is_fsl_mc(dma_dev)) + dma_dev = dma_dev->parent; + } + if (dma_dev->of_node) { ret = of_dma_configure(dev, dma_dev->of_node); } else if (has_acpi_companion(dma_dev)) {
--
1.9.1