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Message-Id: <20211209040746.9299-1-amhamza.mgc@gmail.com>
Date: Thu, 9 Dec 2021 09:07:46 +0500
From: Ameer Hamza <amhamza.mgc@...il.com>
To: kabel@...nel.org, kuba@...nel.org, andrew@...n.ch
Cc: vivien.didelot@...il.com, f.fainelli@...il.com, olteanv@...il.com,
davem@...emloft.net, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, amhamza.mgc@...il.com
Subject: [PATCH v4] net: dsa: mv88e6xxx: error handling for serdes_power functions
Added default case to handle undefined cmode scenario in
mv88e6393x_serdes_power() and mv88e6393x_serdes_power() methods.
Addresses-Coverity: 1494644 ("Uninitialized scalar variable")
Fixes: 21635d9203e1c (net: mvpp2: fix XDP rx queues registering)
Reviewed-by: Marek BehĂșn <kabel@...nel.org>
Signed-off-by: Ameer Hamza <amhamza.mgc@...il.com>
---
Changes in v4:
Added fix tag and synced patch with latest repo
---
drivers/net/dsa/mv88e6xxx/serdes.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c
index 55273013bfb5..2b05ead515cd 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.c
+++ b/drivers/net/dsa/mv88e6xxx/serdes.c
@@ -830,7 +830,7 @@ int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, int lane,
bool up)
{
u8 cmode = chip->ports[port].cmode;
- int err = 0;
+ int err;
switch (cmode) {
case MV88E6XXX_PORT_STS_CMODE_SGMII:
@@ -842,6 +842,9 @@ int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, int lane,
case MV88E6XXX_PORT_STS_CMODE_RXAUI:
err = mv88e6390_serdes_power_10g(chip, lane, up);
break;
+ default:
+ err = -EINVAL;
+ break;
}
if (!err && up)
@@ -1541,6 +1544,9 @@ int mv88e6393x_serdes_power(struct mv88e6xxx_chip *chip, int port, int lane,
case MV88E6393X_PORT_STS_CMODE_10GBASER:
err = mv88e6390_serdes_power_10g(chip, lane, on);
break;
+ default:
+ err = -EINVAL;
+ break;
}
if (err)
--
2.25.1
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