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| author | Laurentiu Palcu <laurentiu.palcu@oss.nxp.com> | 2024-10-23 11:56:43 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2025-05-01 14:07:00 +0200 |
| commit | 910efa649076be9c2e1326059830327cf4228cf6 (patch) | |
| tree | 6aed3a8296c2cb4dcff8fb794582d81c6ed334e3 /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | 543f81b86cf4046c7454a05c741c491a4fac44dd (diff) | |
media: nxp: imx8-isi: better handle the m2m usage_count
Currently, if streamon/streamoff calls are imbalanced we can either end up
with a negative ISI m2m usage_count (if streamoff() is called more times
than streamon()) in which case we'll not be able to restart the ISI pipe
next time, or the usage_count never gets to 0 and the pipe is never
switched off.
To avoid that, add a 'streaming' flag to mxc_isi_m2m_ctx_queue_data and use it
in the streamon/streamoff to avoid incrementing/decrementing the usage_count
uselessly, if called multiple times from the same context.
Fixes: cf21f328fcafac ("media: nxp: Add i.MX8 ISI driver")
Cc: stable@vger.kernel.org
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20241023085643.978729-1-laurentiu.palcu@oss.nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions