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由 Geert Uytterhoeven 提交于
rcar_sysc_update() loops (with interrupts disabled and while holding a spinlock) until submitting a power shutoff or resume request fails, or until the submitted request was accepted. If none of these conditions becomes true, this forms an infinite loop. Put a limit on the maximum number of loop iterations, and add a small delay to each iteration, to fix this. Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
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