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coresight: Adding return code to sink::disable() operation

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In preparation to handle device reference counting inside of the sink
drivers, add a return code to the sink::disable() operation so that
proper action can be taken if a sink has not been disabled.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathieu Poirier 2019-04-25 13:52:55 -06:00 • committed by Greg Kroah-Hartman
parent a54e14f810
commit 6c817a95d8
6 changed files with 16 additions and 8 deletions
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2
include/linux/coresight.h
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@ -192,7 +192,7 @@ struct coresight_device {
*/
struct coresight_ops_sink {
int (*enable)(struct coresight_device *csdev, u32 mode, void *data);
void (*disable)(struct coresight_device *csdev);
int (*disable)(struct coresight_device *csdev);
void *(*alloc_buffer)(struct coresight_device *csdev, int cpu,
void **pages, int nr_pages, bool overwrite);
void (*free_buffer)(void *config);