power: supply: cpcap-battery: fix invalid usage of list cursor
Fix invalid usage of a list_for_each_entry in cpcap_battery_irq_thread(). Empty list or fully traversed list points to list head, which is not NULL (and before the first element containing real data). Signed-off-by: Guangqing Zhu <zhuguangqing83@gmail.com> Reviewed-by: Tony Lindgren <tony@atomide.com> Reviewed-by: Carl Philipp Klemm <philipp@uvos.xyz> Tested-by: Carl Philipp Klemm <philipp@uvos.xyz> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
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