diff options
| author | Rob Herring (Arm) <robh@kernel.org> | 2025-07-03 13:35:33 -0500 |
|---|---|---|
| committer | Suzuki K Poulose <suzuki.poulose@arm.com> | 2025-09-02 09:12:58 +0100 |
| commit | 9ba5502136eea6f3c95ab3c84220916fac89d844 (patch) | |
| tree | 46915b11038b2bc9786c447b9668da6fe7e95141 /drivers/hwtracing | |
| parent | coresight: Only register perf symlink for sinks with alloc_buffer (diff) | |
| download | linux-9ba5502136eea6f3c95ab3c84220916fac89d844.tar.gz linux-9ba5502136eea6f3c95ab3c84220916fac89d844.zip | |
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
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc-core.c | 22 |
1 files 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; } |