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[ Upstream commit ffaea6ebfe9ce06ebb3a54811a47688f2b0893cd ] Replace all instances of open-coded while loops for polling registers with calls to readl_poll_timeout() and, while at it, also fix some possible infinite loop instances. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20211216125748.179602-1-angelogioacchino.delregno@collabora.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>