On 05/06/2024 09:17, Linu Cherian wrote:
> Panic callback handlers allows coresight device drivers to sync
> relevant trace data and trace metadata to reserved memory
> regions so that they can be retrieved later in the subsequent
> boot or in the crashdump kernel.
>
> Signed-off-by: Linu Cherian <lcherian@xxxxxxxxxxx>
> Reviewed-by: James Clark <james.clark@xxxxxxx>
> ---
> Changelog from v8:
> Added Reviewed-by tag.
>
> drivers/hwtracing/coresight/coresight-core.c | 37 ++++++++++++++++++++
> include/linux/coresight.h | 12 +++++++
> 2 files changed, 49 insertions(+)
>
[...]
> static int __init coresight_init(void)
> {
> int ret;
> @@ -1377,6 +1408,10 @@ static int __init coresight_init(void)
> if (ret)
> goto exit_bus_unregister;
>
> + /* Register function to be called for panic */
> + ret = atomic_notifier_chain_register(&panic_notifier_list,
> + &coresight_notifier);
> +
ret isn't checked here
