Devices in the host1x bus rely on the old behavior of of_dma_configure
to set up DMA ops. Add a check for them into of_dma_configure.
We must do the check using a string comparison instead of using
pointers since the host1x bus can be compiled into a module.
Fixes: 723288836628 ("of: restrict DMA configuration")
Signed-off-by: Mikko Perttunen <mperttunen@xxxxxxxxxx>
---
drivers/of/device.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/of/device.c b/drivers/of/device.c
index 64b710265d39..12368418cd33 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -104,6 +104,9 @@ int of_dma_configure(struct device *dev, struct device_node *np)
if (!dev_is_pci(dev) &&
#ifdef CONFIG_ARM_AMBA
dev->bus != &amba_bustype &&
+#endif
+#if IS_ENABLED(CONFIG_TEGRA_HOST1X)
+ !(dev->bus && !strcmp("host1x", dev->bus->name)) &&
#endif
dev->bus != &platform_bus_type)
return ret == -ENODEV ? 0 : ret;
--
2.14.1
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