wangchen 7050c312df pipes:fix the issue of the circbuf cannot be incorrectly initialized due to PIPE_POLICY_0
if dev->d_flags is POLICY_1, the circbuf cannot be initialized incorrectly.
We determine whether the circbuf should be initialized based on first reference on device and d_buffer is NULL

Signed-off-by: wangchen <wangchen41@xiaomi.com>
2024-08-23 16:14:39 -03:00
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