netdev - [PATCH net-next 1/4] net: ethernet: mtk_eth_soc: compile out netsys v2+ code on mt7621

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Message-ID: <20241015110940.63702-1-nbd@nbd.name>
Date: Tue, 15 Oct 2024 13:09:35 +0200
From: Felix Fietkau <nbd@....name>
To: netdev@...r.kernel.org,
	Sean Wang <sean.wang@...iatek.com>,
	Mark Lee <Mark-MC.Lee@...iatek.com>,
	Lorenzo Bianconi <lorenzo@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH net-next 1/4] net: ethernet: mtk_eth_soc: compile out netsys v2+ code on mt7621

Avoid some branches in the hot path on low-end devices with limited CPU power,
and reduce code size

Signed-off-by: Felix Fietkau <nbd@....name>
---
 drivers/net/ethernet/mediatek/mtk_eth_soc.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 0d5225f1d3ee..654897141869 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -1324,16 +1324,22 @@ extern const struct of_device_id of_mtk_match[];
 
 static inline bool mtk_is_netsys_v1(struct mtk_eth *eth)
 {
+	if (IS_ENABLED(CONFIG_SOC_MT7621))
+		return true;
 	return eth->soc->version == 1;
 }
 
 static inline bool mtk_is_netsys_v2_or_greater(struct mtk_eth *eth)
 {
+	if (IS_ENABLED(CONFIG_SOC_MT7621))
+		return false;
 	return eth->soc->version > 1;
 }
 
 static inline bool mtk_is_netsys_v3_or_greater(struct mtk_eth *eth)
 {
+	if (IS_ENABLED(CONFIG_SOC_MT7621))
+		return false;
 	return eth->soc->version > 2;
 }
 
-- 
2.47.0