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authorJerry Ray <jerry.ray@microchip.com>2022-12-09 16:35:02 +0100
committerJakub Kicinski <kuba@kernel.org>2022-12-12 21:53:56 +0100
commit8964916d206071b058c6351f88b1966bd58cbde0 (patch)
treec6a85173b89f4ec47c9af4136fe4a5b1f34cdf2e
parentnet: amd-xgbe: Check only the minimum speed for active/passive cables (diff)
downloadlinux-8964916d206071b058c6351f88b1966bd58cbde0.tar.xz
linux-8964916d206071b058c6351f88b1966bd58cbde0.zip
net: lan9303: Fix read error execution path
This patch fixes an issue where a read failure of a port statistic counter will return unknown results. While it is highly unlikely the read will ever fail, it is much cleaner to return a zero for the stat count. Fixes: a1292595e006 ("net: dsa: add new DSA switch driver for the SMSC-LAN9303") Signed-off-by: Jerry Ray <jerry.ray@microchip.com> Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20221209153502.7429-1-jerry.ray@microchip.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r--drivers/net/dsa/lan9303-core.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index 80f07bd20593..2e270b479143 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -1005,9 +1005,11 @@ static void lan9303_get_ethtool_stats(struct dsa_switch *ds, int port,
ret = lan9303_read_switch_port(
chip, port, lan9303_mib[u].offset, &reg);
- if (ret)
+ if (ret) {
dev_warn(chip->dev, "Reading status port %d reg %u failed\n",
port, lan9303_mib[u].offset);
+ reg = 0;
+ }
data[u] = reg;
}
}