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| author | Jacopo Mondi <jacopo.mondi+renesas@ideasonboard.com> | 2026-02-12 15:38:11 +0100 |
|---|---|---|
| committer | Hans Verkuil <hverkuil+cisco@kernel.org> | 2026-05-19 09:01:49 +0200 |
| commit | d921f21e27626b6684d8c8222925abafae4cfd74 (patch) | |
| tree | 544b1870ab752296818ebe27cc2fd5b181b4d3a6 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 4acf167fa3696a1f3abfeb7ddcafb2a3e084a638 (diff) | |
media: rzg2l-cru: Remove locking from start/stop routines
The start/stop streaming routines do not need to lock the whole function
body against possible concurrent accesses to the CRU buffers or hardware
registers.
The stop function starts by disabling interrupts, and only this portion
needs to be protected not to race against a possible IRQ.
Once interrupts are disabled, nothing in the video device driver can race
and once the peripheral has been disabled we can release all pending
buffers.
Signed-off-by: Jacopo Mondi <jacopo.mondi+renesas@ideasonboard.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Reviewed-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions