* [PATCH] hwtracing: coresight: Use of_reserved_mem_region_to_resource() for "memory-region"
@ 2025-07-03 18:35 Rob Herring (Arm)
2025-07-09 10:41 ` Suzuki K Poulose
0 siblings, 1 reply; 2+ messages in thread
From: Rob Herring (Arm) @ 2025-07-03 18:35 UTC (permalink / raw)
To: Suzuki K Poulose, Mike Leach, James Clark, Alexander Shishkin
Cc: coresight, linux-arm-kernel, linux-kernel
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>
---
.../hwtracing/coresight/coresight-tmc-core.c | 22 +++++--------------
1 file changed, 6 insertions(+), 16 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c
index 88afb16bb6be..be964656be93 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-core.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-core.c
@@ -24,6 +24,7 @@
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/of_reserved_mem.h>
#include <linux/coresight.h>
#include <linux/amba/bus.h>
#include <linux/platform_device.h>
@@ -634,25 +635,14 @@ static int of_tmc_get_reserved_resource_by_name(struct device *dev,
const char *name,
struct resource *res)
{
- int index, rc = -ENODEV;
- struct device_node *node;
+ int rc = -ENODEV;
- if (!is_of_node(dev->fwnode))
- return -ENODEV;
-
- index = of_property_match_string(dev->of_node, "memory-region-names",
- name);
- if (index < 0)
- return rc;
-
- node = of_parse_phandle(dev->of_node, "memory-region", index);
- if (!node)
+ rc = of_reserved_mem_region_to_resource_byname(dev->of_node, name, res);
+ if (rc < 0)
return rc;
- if (!of_address_to_resource(node, 0, res) &&
- res->start != 0 && resource_size(res) != 0)
- rc = 0;
- of_node_put(node);
+ if (res->start == 0 || resource_size(res) == 0)
+ rc = -ENODEV;
return rc;
}
--
2.47.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] hwtracing: coresight: Use of_reserved_mem_region_to_resource() for "memory-region"
2025-07-03 18:35 [PATCH] hwtracing: coresight: Use of_reserved_mem_region_to_resource() for "memory-region" Rob Herring (Arm)
@ 2025-07-09 10:41 ` Suzuki K Poulose
0 siblings, 0 replies; 2+ messages in thread
From: Suzuki K Poulose @ 2025-07-09 10:41 UTC (permalink / raw)
To: Mike Leach, James Clark, Alexander Shishkin, Rob Herring (Arm)
Cc: Suzuki K Poulose, coresight, linux-arm-kernel, linux-kernel
On Thu, 03 Jul 2025 13:35:33 -0500, Rob Herring (Arm) wrote:
> Use the newly added of_reserved_mem_region_to_resource() function to
> handle "memory-region" properties.
>
>
Applied, thanks!
[1/1] hwtracing: coresight: Use of_reserved_mem_region_to_resource() for "memory-region"
https://git.kernel.org/coresight/c/f0148bd7
Best regards,
--
Suzuki K Poulose <suzuki.poulose@arm.com>
^ permalink raw reply [flat|nested] 2+ messages in thread
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