[PATCH] drm/simpledrm: Use of_reserved_mem_region_to_resource() for "memory-region"
Rob Herring (Arm)
robh at kernel.org
Thu Jul 3 18:34:47 UTC 2025
Use the newly added of_reserved_mem_region_to_resource() function to
handle "memory-region" properties.
Signed-off-by: Rob Herring (Arm) <robh at kernel.org>
---
drivers/gpu/drm/sysfb/simpledrm.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/sysfb/simpledrm.c b/drivers/gpu/drm/sysfb/simpledrm.c
index a1c3119330de..c8856e6645e2 100644
--- a/drivers/gpu/drm/sysfb/simpledrm.c
+++ b/drivers/gpu/drm/sysfb/simpledrm.c
@@ -4,7 +4,7 @@
#include <linux/clk.h>
#include <linux/of_clk.h>
#include <linux/minmax.h>
-#include <linux/of_address.h>
+#include <linux/of_reserved_mem.h>
#include <linux/platform_data/simplefb.h>
#include <linux/platform_device.h>
#include <linux/pm_domain.h>
@@ -180,22 +180,17 @@ simplefb_get_format_of(struct drm_device *dev, struct device_node *of_node)
static struct resource *
simplefb_get_memory_of(struct drm_device *dev, struct device_node *of_node)
{
- struct device_node *np;
- struct resource *res;
+ struct resource r, *res;
int err;
- np = of_parse_phandle(of_node, "memory-region", 0);
- if (!np)
+ err = of_reserved_mem_region_to_resource(of_node, 0, &r);
+ if (err)
return NULL;
- res = devm_kzalloc(dev->dev, sizeof(*res), GFP_KERNEL);
+ res = devm_kmemdup(dev->dev, &r, sizeof(r), GFP_KERNEL);
if (!res)
return ERR_PTR(-ENOMEM);
- err = of_address_to_resource(np, 0, res);
- if (err)
- return ERR_PTR(err);
-
if (of_property_present(of_node, "reg"))
drm_warn(dev, "preferring \"memory-region\" over \"reg\" property\n");
--
2.47.2
More information about the dri-devel
mailing list