diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/790-v6.4-0001-net-dsa-mt7530-make-some-noise-if-register-read-fail.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/790-v6.4-0001-net-dsa-mt7530-make-some-noise-if-register-read-fail.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/790-v6.4-0001-net-dsa-mt7530-make-some-noise-if-register-read-fail.patch b/target/linux/generic/backport-5.15/790-v6.4-0001-net-dsa-mt7530-make-some-noise-if-register-read-fail.patch new file mode 100644 index 0000000000..ffbdde5a57 --- /dev/null +++ b/target/linux/generic/backport-5.15/790-v6.4-0001-net-dsa-mt7530-make-some-noise-if-register-read-fail.patch @@ -0,0 +1,32 @@ +From b6f56cddb5f57a0b8da0ce582232a2f1933558c6 Mon Sep 17 00:00:00 2001 +From: Daniel Golle <daniel@makrotopia.org> +Date: Mon, 3 Apr 2023 02:17:19 +0100 +Subject: [PATCH 04/16] net: dsa: mt7530: make some noise if register read + fails + +Simply returning the negative error value instead of the read value +doesn't seem like a good idea. Return 0 instead and add WARN_ON_ONCE(1) +so this kind of error will not go unnoticed. + +Suggested-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: Daniel Golle <daniel@makrotopia.org> +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/dsa/mt7530.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -224,9 +224,10 @@ mt7530_mii_read(struct mt7530_priv *priv + /* MT7530 uses 31 as the pseudo port */ + ret = bus->write(bus, 0x1f, 0x1f, page); + if (ret < 0) { ++ WARN_ON_ONCE(1); + dev_err(&bus->dev, + "failed to read mt7530 register\n"); +- return ret; ++ return 0; + } + + lo = bus->read(bus, 0x1f, r); |