From c3f1813516477c014d41e207d95190daf0838107 Mon Sep 17 00:00:00 2001 From: Ricardo Rivera-Matos Date: Wed, 13 Jan 2021 16:53:52 -0600 Subject: [PATCH] power: supply: bq256xx: Fix BQ256XX_NUM_WD_VAL and bq256xx_watchdog_time[] overrun Corrects BQ256XX_NUM_WD_VAL from value of "8" to "4" and fixes the issue when 'i' is equal to array size then array index over runs the array Fixes: 32e4978bb920 ("power: supply: bq256xx: Introduce the BQ256XX charger driver") Reported-by: Dan Carpenter Signed-off-by: Ricardo Rivera-Matos Signed-off-by: Sebastian Reichel --- drivers/power/supply/bq256xx_charger.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/power/supply/bq256xx_charger.c b/drivers/power/supply/bq256xx_charger.c index 6d1c524743d4..2ab5ba4af92b 100644 --- a/drivers/power/supply/bq256xx_charger.c +++ b/drivers/power/supply/bq256xx_charger.c @@ -135,7 +135,7 @@ #define BQ256XX_NTC_FAULT_COLD (BIT(2) | BIT(0)) #define BQ256XX_NTC_FAULT_HOT (BIT(2) | BIT(1)) -#define BQ256XX_NUM_WD_VAL 8 +#define BQ256XX_NUM_WD_VAL 4 #define BQ256XX_WATCHDOG_MASK GENMASK(5, 4) #define BQ256XX_WATCHDOG_MAX 1600000 #define BQ256XX_WATCHDOG_DIS 0 @@ -1508,6 +1508,10 @@ static int bq256xx_hw_init(struct bq256xx_device *bq) int i; for (i = 0; i < BQ256XX_NUM_WD_VAL; i++) { + if (bq->watchdog_timer == bq256xx_watchdog_time[i]) { + wd_reg_val = i; + break; + } if (bq->watchdog_timer > bq256xx_watchdog_time[i] && bq->watchdog_timer < bq256xx_watchdog_time[i + 1]) wd_reg_val = i;