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Merge "power: qpnp-fg-gen3: Fix possible integer overflow"

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Linux Build Service Account 2017-06-07 20:57:48 -07:00 • committed by Gerrit - the friendly Code Review server
commit eaeca093b4
1 changed files with 11 additions and 5 deletions
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16
drivers/power/supply/qcom/qpnp-fg-gen3.c
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@ -491,7 +491,7 @@ static void fg_encode_default(struct fg_sram_param *sp,
int i, mask = 0xff;
int64_t temp;
temp = DIV_ROUND_CLOSEST(val * sp[id].numrtr, sp[id].denmtr);
temp = (int64_t)div_s64((s64)val * sp[id].numrtr, sp[id].denmtr);
pr_debug("temp: %llx id: %d, val: %d, buf: [ ", temp, id, val);
for (i = 0; i < sp[id].len; i++) {
buf[i] = temp & mask;
@ -1320,9 +1320,16 @@ static int fg_cap_learning_process_full_data(struct fg_chip *chip)
return rc;
}
cc_soc_delta_pct = DIV_ROUND_CLOSEST(
abs(cc_soc_sw - chip->cl.init_cc_soc_sw) * 100,
CC_SOC_30BIT);
cc_soc_delta_pct =
div64_s64((int64_t)(cc_soc_sw - chip->cl.init_cc_soc_sw) * 100,
CC_SOC_30BIT);
/* If the delta is < 50%, then skip processing full data */
if (cc_soc_delta_pct < 50) {
pr_err("cc_soc_delta_pct: %d\n", cc_soc_delta_pct);
return -ERANGE;
}
delta_cc_uah = div64_s64(chip->cl.learned_cc_uah * cc_soc_delta_pct,
100);
chip->cl.final_cc_uah = chip->cl.init_cc_uah + delta_cc_uah;
@ -1392,7 +1399,6 @@ out:
return rc;
}
#define FULL_SOC_RAW 255
static void fg_cap_learning_update(struct fg_chip *chip)
{
int rc, batt_soc, batt_soc_msb;