[RFC 04/13] driver core: plafrom: Introduce platform_mmio_configure()
From: Nicolas Saenz Julienne <hidden>
Date: 2021-02-26 14:05:32
Also in:
linux-devicetree, lkml
Subsystem:
driver core, kobjects, debugfs and sysfs, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
The function will traverse the platform device's bus hierarchy and set the relevant MMIO access flags. Signed-off-by: Nicolas Saenz Julienne <redacted> --- 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
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