Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
hwtracing: coresight: Use of_reserved_mem_region_to_resource() for "memory-region"
Use the newly added of_reserved_mem_region_to_resource() function to
handle "memory-region" properties.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20250703183534.2075569-1-robh@kernel.org
authored by
Rob Herring (Arm)
and committed by
Suzuki K Poulose
9ba55021
12d9a9dd
+6
-16
+6
-16
drivers/hwtracing/coresight/coresight-tmc-core.c
+6
-16
drivers/hwtracing/coresight/coresight-tmc-core.c
···
24
24
#include <linux/pm_runtime.h>
25
25
#include <linux/of.h>
26
26
#include <linux/of_address.h>
27
+
#include <linux/of_reserved_mem.h>
27
28
#include <linux/coresight.h>
28
29
#include <linux/amba/bus.h>
29
30
#include <linux/platform_device.h>
···
635
634
const char *name,
636
635
struct resource *res)
637
636
{
638
-
int index, rc = -ENODEV;
639
-
struct device_node *node;
637
+
int rc = -ENODEV;
640
638
641
-
if (!is_of_node(dev->fwnode))
642
-
return -ENODEV;
643
-
644
-
index = of_property_match_string(dev->of_node, "memory-region-names",
645
-
name);
646
-
if (index < 0)
639
+
rc = of_reserved_mem_region_to_resource_byname(dev->of_node, name, res);
640
+
if (rc < 0)
647
641
return rc;
648
642
649
-
node = of_parse_phandle(dev->of_node, "memory-region", index);
650
-
if (!node)
651
-
return rc;
652
-
653
-
if (!of_address_to_resource(node, 0, res) &&
654
-
res->start != 0 && resource_size(res) != 0)
655
-
rc = 0;
656
-
of_node_put(node);
643
+
if (res->start == 0 || resource_size(res) == 0)
644
+
rc = -ENODEV;
657
645
658
646
return rc;
659
647
}