The function will traverse the platform device's bus hierarchy and set
the relevant MMIO access flags.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx>
---
drivers/base/platform.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 6e1f8e0b661c..31772fd4ca1d 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -1504,6 +1504,14 @@ int platform_dma_configure(struct device *dev)
return ret;
}
+static int platform_mmio_configure(struct device *dev)
+{
+ if (dev->parent && dev->parent->of_node)
+ return of_mmio_configure(dev, dev->parent->of_node);
+
+ return 0;
+}
+
static const struct dev_pm_ops platform_dev_pm_ops = {
.runtime_suspend = pm_generic_runtime_suspend,
.runtime_resume = pm_generic_runtime_resume,
@@ -1519,6 +1527,7 @@ struct bus_type platform_bus_type = {
.remove = platform_remove,
.shutdown = platform_shutdown,
.dma_configure = platform_dma_configure,
+ .mmio_configure = platform_mmio_configure,
.pm = &platform_dev_pm_ops,
};
EXPORT_SYMBOL_GPL(platform_bus_type);
--
2.30.1
