archives/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-03-13 21:26:14 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

drm/simpledrm: Use of_reserved_mem_region_to_resource() for "memory-region"

Browse source 
Use the newly added of_reserved_mem_region_to_resource() function to
handle "memory-region" properties.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20250703183447.2073902-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
This commit is contained in:
Rob Herring (Arm) 2025-07-03 13:34:47 -05:00
parent 6b12afac75
commit ed07a76be7
1 changed files with 5 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

15
drivers/gpu/drm/sysfb/simpledrm.c
View file

@ -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>
@ -179,22 +179,17 @@ 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");