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media: amphion: ensure the bitops don't cross boundaries

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the supported_instance_count determine the instance index range,
it shouldn't exceed the bits number of instance_mask,
otherwise the bitops of instance_mask may cross boundaries

Fixes: 9f599f351e ("media: amphion: add vpu core driver")
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Ming Qian 2023-07-18 17:50:13 +08:00 committed by Hans Verkuil
parent cf6a063549
commit 5bd28eae48
1 changed files with 2 additions and 0 deletions
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2
drivers/media/platform/amphion/vpu_core.c
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@ -88,6 +88,8 @@ static int vpu_core_boot_done(struct vpu_core *core)
core->supported_instance_count = min(core->supported_instance_count, count);
}
if (core->supported_instance_count >= BITS_PER_TYPE(core->instance_mask))
core->supported_instance_count = BITS_PER_TYPE(core->instance_mask);
core->fw_version = fw_version;
vpu_core_set_state(core, VPU_CORE_ACTIVE);