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From: Alex Elder <elder@riscstar.com>
To: maxime.chevallier@bootlin.com, andrew+netdev@lunn.ch,
	davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
	pabeni@redhat.com
Cc: sashiko-bot@kernel.org, mcoquelin.stm32@gmail.com,
	alexandre.torgue@foss.st.com,
	linux-stm32@st-md-mailman.stormreply.com, netdev@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH net-next v2 0/2] net: stmmac: DMA address handling fixes
Date: Wed, 12 Aug 2026 11:38:29 -0500	[thread overview]
Message-ID: <20260812163832.271742-1-elder@riscstar.com> (raw)

Update jumbo_frm() (implemented in both "chain_mode.c" and "ring_mode.c")
to ensure DMA errors don't get lost due to casting the result to an
integer of the wrong size.  This was a Sashiko suggestion.

In addition, add explicit calls to lower_32_bits() to DMA addresses
before they are passed to cpu_to_le32(), to guarantee the type of
the converted value is u32.

Maxime implied that a new version the first patch could handle both
fixes, but I thought it better to do them separately.
 
					-Alex

Here is v1 of the series (the patch):
  https://lore.kernel.org/lkml/20260811192703.1765416-1-elder@riscstar.com/	 

Alex Elder (2):
  net: stmmac: use dma_addr_t for DMA addresses
  net: stmmac: convert DMA address to lower 32 before assignment

 drivers/net/ethernet/stmicro/stmmac/chain_mode.c |  9 +++++----
 drivers/net/ethernet/stmicro/stmmac/ring_mode.c  | 15 ++++++++-------
 2 files changed, 13 insertions(+), 11 deletions(-)


base-commit: 5e6de6a2b522f659defacb1551d0465ba6ce13cf
-- 
2.53.0



             reply	other threads:[~2026-08-12 16:38 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-12 16:38 Alex Elder [this message]
2026-08-12 16:38 ` [PATCH net-next v2 1/2] net: stmmac: use dma_addr_t for DMA addresses Alex Elder
2026-08-12 16:38 ` [PATCH net-next v2 2/2] net: stmmac: convert DMA address to lower 32 before assignment Alex Elder

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