From: Karl Mehltretter <kmehltretter@gmail.com>
To: Heiner Kallweit <hkallweit1@gmail.com>, nic_swsd@realtek.com
Cc: Karl Mehltretter <kmehltretter@gmail.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <horms@kernel.org>,
Javen Xu <javen_xu@realsil.com.cn>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org
Subject: [PATCH net] r8169: give RTL_GIGA_MAC_VER_EXTENDED a distinct value
Date: Sat, 8 Aug 2026 12:19:41 +0200 [thread overview]
Message-ID: <20260808101941.57666-1-kmehltretter@gmail.com> (raw)
RTL_GIGA_MAC_VER_EXTENDED implicitly follows
RTL_GIGA_MAC_VER_LAST = RTL_GIGA_MAC_NONE - 1, so it has the same value
as RTL_GIGA_MAC_NONE.
rtl_init_one() therefore sends unknown chips through extended detection.
If TX_CONFIG_V2 reads as zero, they are misidentified as RTL9151AS
instead of being rejected.
Give RTL_GIGA_MAC_VER_EXTENDED a distinct value. It is only a detection
marker and is never stored in tp->mac_version.
Found by Clang's -Wduplicate-enum and verified with a QEMU stub.
Fixes: 5e3c5a2b85da9 ("r8169: add support for extended chip version id and RTL9151AS")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-fable-5
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
---
drivers/net/ethernet/realtek/r8169.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/realtek/r8169.h b/drivers/net/ethernet/realtek/r8169.h
index 0b9c1d4eb48ba..fb772cc043105 100644
--- a/drivers/net/ethernet/realtek/r8169.h
+++ b/drivers/net/ethernet/realtek/r8169.h
@@ -74,7 +74,7 @@ enum mac_version {
RTL_GIGA_MAC_VER_80,
RTL_GIGA_MAC_NONE,
RTL_GIGA_MAC_VER_LAST = RTL_GIGA_MAC_NONE - 1,
- RTL_GIGA_MAC_VER_EXTENDED
+ RTL_GIGA_MAC_VER_EXTENDED = RTL_GIGA_MAC_NONE + 1
};
struct rtl8169_private;
--
2.53.0
reply other threads:[~2026-08-08 10:21 UTC|newest]
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