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Documentation/scheduler/completion.txt states: Calling init_completion() on the same completion object twice is most likely a bug as it re-initializes the queue to an empty queue and enqueued tasks could get "lost" - use reinit_completion() in that case, but be aware of other races. Initialize nfc->completion in meson_nfc_probe using init_completion and change the call in meson_nfc_queue_rb to reinit_completion so the logic matches what the documentation suggests. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Tested-by:Liang Yang <liang.yang@amlogic.com> Acked-by: Liang Yang <liang.yang@amlogic.com> Tested-by:Liang Yang <liang.yang@amlogic.com> Acked-by: Liang Yang <liang.yang@amlogic.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>