diff options
| author | Su Hui <suhui@nfschina.com> | 2023-11-16 12:18:23 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-25 14:52:50 -0800 |
| commit | 96d289b57daf14e7076c26938dd2d2d57ba0a9b6 (patch) | |
| tree | 5bd723fb0b3f9b4080490976bfbe41c4f1f5a879 /drivers/power/supply/bq256xx_charger.c | |
| parent | 435671571ef813016a0bd4d7a688f17bc6ea8660 (diff) | |
power: supply: bq256xx: fix some problem in bq256xx_hw_init
[ Upstream commit b55d073e6501dc6077edaa945a6dad8ac5c8bbab ]
smatch complains that there is a buffer overflow and clang complains
'ret' is never read.
Smatch error:
drivers/power/supply/bq256xx_charger.c:1578 bq256xx_hw_init() error:
buffer overflow 'bq256xx_watchdog_time' 4 <= 4
Clang static checker:
Value stored to 'ret' is never read.
Add check for buffer overflow and error code from regmap_update_bits().
Fixes: 32e4978bb920 ("power: supply: bq256xx: Introduce the BQ256XX charger driver")
Signed-off-by: Su Hui <suhui@nfschina.com>
Link: https://lore.kernel.org/r/20231116041822.1378758-1-suhui@nfschina.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/power/supply/bq256xx_charger.c')
| -rw-r--r-- | drivers/power/supply/bq256xx_charger.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/power/supply/bq256xx_charger.c b/drivers/power/supply/bq256xx_charger.c index f501ecd49202..9fb7b44e890a 100644 --- a/drivers/power/supply/bq256xx_charger.c +++ b/drivers/power/supply/bq256xx_charger.c @@ -1514,13 +1514,16 @@ static int bq256xx_hw_init(struct bq256xx_device *bq) wd_reg_val = i; break; } - if (bq->watchdog_timer > bq256xx_watchdog_time[i] && + if (i + 1 < BQ256XX_NUM_WD_VAL && + bq->watchdog_timer > bq256xx_watchdog_time[i] && bq->watchdog_timer < bq256xx_watchdog_time[i + 1]) wd_reg_val = i; } ret = regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_1, BQ256XX_WATCHDOG_MASK, wd_reg_val << BQ256XX_WDT_BIT_SHIFT); + if (ret) + return ret; ret = power_supply_get_battery_info(bq->charger, &bat_info); if (ret) { |