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coresight: Remove obsolete Trace ID unniqueness checks 

The checks for sources to have unique IDs has been removed - this is now
guaranteed by the ID allocation mechanisms, and inappropriate where
multiple ID maps are in use in larger systems

Signed-off-by: Mike Leach <mike.leach@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20230116124928.5440-3-mike.leach@linaro.org
This commit is contained in:
Mike Leach 2023-01-16 12:49:15 +00:00 committed by Suzuki K Poulose
parent 338a588e9d
commit bdeb62a386
1 changed files with 0 additions and 45 deletions
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45
drivers/hwtracing/coresight/coresight-core.c
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@ -112,45 +112,6 @@ struct coresight_device *coresight_get_percpu_sink(int cpu)
}
EXPORT_SYMBOL_GPL(coresight_get_percpu_sink);
static int coresight_id_match(struct device *dev, void *data)
{
int trace_id, i_trace_id;
struct coresight_device *csdev, *i_csdev;
csdev = data;
i_csdev = to_coresight_device(dev);
/*
* No need to care about oneself and components that are not
* sources or not enabled
*/
if (i_csdev == csdev || !i_csdev->enable ||
i_csdev->type != CORESIGHT_DEV_TYPE_SOURCE)
return 0;
/* Get the source ID for both components */
trace_id = source_ops(csdev)->trace_id(csdev);
i_trace_id = source_ops(i_csdev)->trace_id(i_csdev);
/* All you need is one */
if (trace_id == i_trace_id)
return 1;
return 0;
}
static int coresight_source_is_unique(struct coresight_device *csdev)
{
int trace_id = source_ops(csdev)->trace_id(csdev);
/* this shouldn't happen */
if (trace_id < 0)
return 0;
return !bus_for_each_dev(&coresight_bustype, NULL,
csdev, coresight_id_match);
}
static int coresight_find_link_inport(struct coresight_device *csdev,
struct coresight_device *parent)
{
@ -459,12 +420,6 @@ static int coresight_enable_source(struct coresight_device *csdev, u32 mode)
{
int ret;
if (!coresight_source_is_unique(csdev)) {
dev_warn(&csdev->dev, "traceID %d not unique\n",
source_ops(csdev)->trace_id(csdev));
return -EINVAL;
}
if (!csdev->enable) {
if (source_ops(csdev)->enable) {
ret = coresight_control_assoc_ectdev(csdev, true);