[PATCH net] net: dsa: motorcomm: Report error when FDB fails to add
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From: David Yang <mmyangfl@gmail.com>
Date: 2026-10-25 02:41:29
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Subsystem:
motorcomm yt921x ethernet switch driver, networking drivers, networking [dsa], the rest · Maintainers:
David Yang, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Andrew Lunn, Vladimir Oltean, Linus Torvalds
fdb_add() ignored any errors returned by the hardware (for example,
table is full). Return error for that case.
Fixes: 186623f4aa72 ("net: dsa: yt921x: Add support for Motorcomm YT921x")
Signed-off-by: David Yang <mmyangfl@gmail.com>
---
drivers/net/dsa/motorcomm/chip.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/dsa/motorcomm/chip.c b/drivers/net/dsa/motorcomm/chip.c
index d4fc20c52a58..422b45085e7b 100644
--- a/drivers/net/dsa/motorcomm/chip.c
+++ b/drivers/net/dsa/motorcomm/chip.c@@ -725,7 +725,13 @@ yt921x_fdb_add(struct yt921x_priv *priv, const unsigned char *addr, u16 vid, if (res) return res; - return yt921x_fdb_wait(priv, &val); + res = yt921x_fdb_wait(priv, &val); + if (res) + return res; + if (val & YT921X_FDB_RESULT_NOTFOUND) + return -ENOSPC; + + return 0; } static int
--
2.53.0