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media: chips-media: wave5: add missing spinlock protection for handle_dynamic_resolution_change()

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Add spin_lock_irqsave()/spin_unlock_irqrestore() around the
handle_dynamic_resolution_change() call in initialize_sequence() to fix
the missing lock protection.

initialize_sequence() calls handle_dynamic_resolution_change() without
holding inst->state_spinlock. However, handle_dynamic_resolution_change()
has lockdep_assert_held(&inst->state_spinlock) indicating that callers
must hold this lock.

Other callers of handle_dynamic_resolution_change() properly acquire the
spinlock:
- wave5_vpu_dec_finish_decode()
- wave5_vpu_dec_device_run()

Signed-off-by: Ziyi Guo <n7l8m4@u.northwestern.edu>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Fixes: 9707a6254a ("media: chips-media: wave5: Add the v4l2 layer")
Cc: stable@vger.kernel.org
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
Ziyi Guo
2026-01-31 22:19:07 +00:00
committed by Hans Verkuil
parent f480504367
commit cb8bdd3ffc
1 changed files with 3 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c
+3
View File
@@ -1593,6 +1593,7 @@ static int initialize_sequence(struct vpu_instance *inst)
{
struct dec_initial_info initial_info;
int ret = 0;
unsigned long flags;
memset(&initial_info, 0, sizeof(struct dec_initial_info));
@@ -1614,7 +1615,9 @@ static int initialize_sequence(struct vpu_instance *inst)
return ret;
}
spin_lock_irqsave(&inst->state_spinlock, flags);
handle_dynamic_resolution_change(inst);
spin_unlock_irqrestore(&inst->state_spinlock, flags);
return 0;
}