From: Dan Carpenter Date: Thu, 22 Apr 2021 09:10:28 +0000 (+0300) Subject: bnxt_en: fix ternary sign extension bug in bnxt_show_temp() X-Git-Tag: v5.13-rc1~94^2~36^2~5 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=27537929f30d3136a71ef29db56127a33c92dad7;p=thirdparty%2Fkernel%2Flinux.git bnxt_en: fix ternary sign extension bug in bnxt_show_temp() The problem is that bnxt_show_temp() returns long but "rc" is an int and "len" is a u32. With ternary operations the type promotion is quite tricky. The negative "rc" is first promoted to u32 and then to long so it ends up being a high positive value instead of a a negative as we intended. Fix this by removing the ternary. Fixes: d69753fa1ecb ("bnxt_en: return proper error codes in bnxt_show_temp") Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index b53a0d87371a2..aeb8c61c0f875 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -9736,7 +9736,9 @@ static ssize_t bnxt_show_temp(struct device *dev, if (!rc) len = sprintf(buf, "%u\n", resp->temp * 1000); /* display millidegree */ mutex_unlock(&bp->hwrm_cmd_lock); - return rc ?: len; + if (rc) + return rc; + return len; } static SENSOR_DEVICE_ATTR(temp1_input, 0444, bnxt_show_temp, NULL, 0);