[PATCH 2/4] coresight: tmc: Add missing doc of tmc_drvdata::reading

[Yicong Yang]

From: Yicong Yang <yangyicong at hisilicon.com>

tmc_drvdata::reading is used to indicate whether a reading process
is performed through /dev/xyz.tmc. Document it.

Reviewed-by: James Clark <james.clark at linaro.org>
Signed-off-by: Yicong Yang <yangyicong at hisilicon.com>
---
 drivers/hwtracing/coresight/coresight-tmc.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h
index 2671926be62a..fdf7955e7350 100644
--- a/drivers/hwtracing/coresight/coresight-tmc.h
+++ b/drivers/hwtracing/coresight/coresight-tmc.h
@@ -174,6 +174,7 @@ struct etr_buf {
  * @pid:	Process ID of the process that owns the session that is using
  *		this component. For example this would be the pid of the Perf
  *		process.
+ * @reading:	buffer's in the reading through "/dev/xyz.tmc" entry
  * @buf:	Snapshot of the trace data for ETF/ETB.
  * @etr_buf:	details of buffer used in TMC-ETR
  * @len:	size of the available trace for ETF/ETB.
-- 
2.24.0