coresight: Remove cpu field from platform data

CPU field is only used by ETMs and there is a separate API
for fetching the same. So, let us use that instead of using
the common platform probing helper. Also, remove it from the
platform_data.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/hwtracing/coresight/coresight-etm3x.c

@@ -819,7 +819,7 @@ static int etm_probe(struct amba_device *adev, const struct amba_id *id)
 			return ret;
 	}
 
-	drvdata->cpu = pdata ? pdata->cpu : 0;
+	drvdata->cpu = coresight_get_cpu(dev);
 
 	cpus_read_lock();
 	etmdrvdata[drvdata->cpu] = drvdata;

drivers/hwtracing/coresight/coresight-etm4x.c

@@ -1105,7 +1105,7 @@ static int etm4_probe(struct amba_device *adev, const struct amba_id *id)
 
 	spin_lock_init(&drvdata->spinlock);
 
-	drvdata->cpu = pdata ? pdata->cpu : 0;
+	drvdata->cpu = coresight_get_cpu(dev);
 
 	cpus_read_lock();
 	etmdrvdata[drvdata->cpu] = drvdata;

drivers/hwtracing/coresight/coresight-platform.c

@@ -325,7 +325,6 @@ coresight_get_platform_data(struct device *dev)
 
 	/* Use device name as sysfs handle */
 	pdata->name = dev_name(dev);
-	pdata->cpu = coresight_get_cpu(dev);
 
 	if (is_of_node(fwnode))
 		ret = of_get_coresight_platform_data(dev, pdata);

include/linux/coresight.h

@@ -91,14 +91,12 @@ union coresight_dev_subtype {
 
 /**
  * struct coresight_platform_data - data harvested from the DT specification
- * @cpu:	the CPU a source belongs to. Only applicable for ETM/PTMs.
  * @name:	name of the component as shown under sysfs.
  * @nr_inport:	number of input ports for this component.
  * @nr_outport:	number of output ports for this component.
  * @conns:	Array of nr_outport connections from this component
  */
 struct coresight_platform_data {
-	int cpu;
 	const char *name;
 	int nr_inport;
 	int nr_outport;