From: Guangqing Zhu <zhuguangqing83@xxxxxxxxx> [ Upstream commit d0a43c12ee9f57ddb284272187bd18726c2c2c98 ] 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@xxxxxxxxx> Reviewed-by: Tony Lindgren <tony@xxxxxxxxxxx> Reviewed-by: Carl Philipp Klemm <philipp@xxxxxxxx> Tested-by: Carl Philipp Klemm <philipp@xxxxxxxx> Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/power/supply/cpcap-battery.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/power/supply/cpcap-battery.c b/drivers/power/supply/cpcap-battery.c index cebc5c8fda1b..793d4ca52f8a 100644 --- a/drivers/power/supply/cpcap-battery.c +++ b/drivers/power/supply/cpcap-battery.c @@ -626,7 +626,7 @@ static irqreturn_t cpcap_battery_irq_thread(int irq, void *data) break; } - if (!d) + if (list_entry_is_head(d, &ddata->irq_list, node)) return IRQ_NONE; latest = cpcap_battery_latest(ddata); -- 2.30.2
