From: "Théo Lebrun" <theo.lebrun@bootlin.com>
To: "Karumanchi, Vineeth" <vineeth@amd.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>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Nicolas Ferre" <nicolas.ferre@microchip.com>,
"Claudiu Beznea" <claudiu.beznea@tuxon.dev>,
"Geert Uytterhoeven" <geert@linux-m68k.org>,
"Harini Katakam" <harini.katakam@xilinx.com>,
"Richard Cochran" <richardcochran@gmail.com>,
"Russell King" <linux@armlinux.org.uk>
Cc: <netdev@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
"Tawfik Bayouk" <tawfik.bayouk@mobileye.com>,
"Sean Anderson" <sean.anderson@linux.dev>
Subject: Re: [PATCH net v5 5/5] net: macb: avoid dealing with endianness in macb_set_hwaddr()
Date: Thu, 11 Sep 2025 11:22:47 +0200 [thread overview]
Message-ID: <DCPV0SVDR2J7.2FKMD5PD9S235@bootlin.com> (raw)
In-Reply-To: <17d518ca-d35a-4279-b4fe-6930c5e279cd@amd.com>
On Thu Sep 11, 2025 at 5:13 AM CEST, Karumanchi, Vineeth wrote:
> On 9/10/2025 9:45 PM, Théo Lebrun wrote:
>> @@ -271,12 +271,10 @@ static bool hw_is_gem(void __iomem *addr, bool native_io)
>>
>> static void macb_set_hwaddr(struct macb *bp)
>> {
>> - u32 bottom;
>> - u16 top;
>> + u32 bottom = get_unaligned_le32(bp->dev->dev_addr);
>> + u16 top = get_unaligned_le16(bp->dev->dev_addr + 4);
>
> please change the order as per reverse xmas tree.
I had realised this before sending the patch but preferred keeping the
ordering as-is to access dev_addr+0 first then dev_addr+4.
RCT is a strict rule in net so I'll fix it in the next revision. Some
sneaky options were also considered: a spare space in the `u32 bottom`
line, express bottom using `dev_addr + 0`, or renaming variables. :-)
Thanks Vineeth,
--
Théo Lebrun, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
prev parent reply other threads:[~2025-09-11 9:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-10 16:15 [PATCH net v5 0/5] net: macb: various fixes Théo Lebrun
2025-09-10 16:15 ` [PATCH net v5 1/5] dt-bindings: net: cdns,macb: allow tsu_clk without tx_clk Théo Lebrun
2025-09-10 16:15 ` [PATCH net v5 2/5] net: macb: remove illusion about TBQPH/RBQPH being per-queue Théo Lebrun
2025-09-10 16:15 ` [PATCH net v5 3/5] net: macb: move ring size computation to functions Théo Lebrun
2025-09-11 6:43 ` Karumanchi, Vineeth
2025-09-11 9:14 ` Théo Lebrun
2025-09-11 23:39 ` Jakub Kicinski
2025-09-10 16:15 ` [PATCH net v5 4/5] net: macb: single dma_alloc_coherent() for DMA descriptors Théo Lebrun
2025-09-10 16:15 ` [PATCH net v5 5/5] net: macb: avoid dealing with endianness in macb_set_hwaddr() Théo Lebrun
2025-09-11 3:13 ` Karumanchi, Vineeth
2025-09-11 9:22 ` Théo Lebrun [this message]
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