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bnxt_en: fix ternary sign extension bug in bnxt_show_temp()

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[ Upstream commit 27537929f3 ]

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: d69753fa1e ("bnxt_en: return proper error codes in bnxt_show_temp")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter 2021-04-22 12:10:28 +03:00 • committed by Greg Kroah-Hartman
commit 66b1cfc0cd
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -9546,7 +9546,9 @@ 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);