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Date:   Tue, 12 Apr 2022 16:04:20 -0500
From:   Jeremy Linton <>
Cc:,,,,,,,, Jeremy Linton <>
Subject: [PATCH] net: bcmgenet: Revert "Use stronger register read/writes to assure ordering"

It turns out after digging deeper into this bug, that it was being
triggered by GCC12 failing to call the bcmgenet_enable_dma()
routine. Given that a gcc12 fix has been merged [1] and the genet
driver now works properly when built with gcc12, this commit should
be reverted.


Fixes: 8d3ea3d402db ("net: bcmgenet: "Use stronger register read/writes to assure ordering")
Signed-off-by: Jeremy Linton <>
 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 2dd79af9411b..9a41145dadfc 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -76,7 +76,7 @@ static inline void bcmgenet_writel(u32 value, void __iomem *offset)
 		__raw_writel(value, offset);
-		writel(value, offset);
+		writel_relaxed(value, offset);
 static inline u32 bcmgenet_readl(void __iomem *offset)
@@ -84,7 +84,7 @@ static inline u32 bcmgenet_readl(void __iomem *offset)
 		return __raw_readl(offset);
-		return readl(offset);
+		return readl_relaxed(offset);
 static inline void dmadesc_set_length_status(struct bcmgenet_priv *priv,

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