This is a note to let you know that I've just added the patch titled
net: lan9303: Fix read error execution path
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-lan9303-fix-read-error-execution-path.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e083a994dd590825534cc39edc0156bd79cac769
Author: Jerry Ray <jerry.ray@xxxxxxxxxxxxx>
Date: Fri Dec 9 09:35:02 2022 -0600
net: lan9303: Fix read error execution path
[ Upstream commit 8964916d206071b058c6351f88b1966bd58cbde0 ]
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@xxxxxxxxxxxxx>
Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx>
Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Link: https://lore.kernel.org/r/20221209153502.7429-1-jerry.ray@xxxxxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index 1de62604434d..2ed64fa19d02 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -1003,9 +1003,11 @@ static void lan9303_get_ethtool_stats(struct dsa_switch *ds, int port,
ret = lan9303_read_switch_port(
chip, port, lan9303_mib[u].offset, ®);
- 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;
}
}
