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coresight: make coresight_bustype const

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Now that the driver core can properly handle constant struct bus_type,
move the coresight_bustype variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: James Clark <james.clark@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/2024010531-tinfoil-avert-4a57@gregkh
This commit is contained in:
Greg Kroah-Hartman 2024-01-05 13:33:32 +01:00 committed by Suzuki K Poulose
parent d999c7dd52
commit dd95255d44
2 changed files with 2 additions and 2 deletions
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2
drivers/hwtracing/coresight/coresight-core.c
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@ -1799,7 +1799,7 @@ done:
}
EXPORT_SYMBOL_GPL(coresight_alloc_device_name);
struct bus_type coresight_bustype = {
const struct bus_type coresight_bustype = {
.name = "coresight",
};

2
include/linux/coresight.h
View File

@ -35,7 +35,7 @@
#define CORESIGHT_UNLOCK 0xc5acce55
extern struct bus_type coresight_bustype;
extern const struct bus_type coresight_bustype;
enum coresight_dev_type {
CORESIGHT_DEV_TYPE_SINK,