From: Jakub Kicinski <kuba@kernel.org>
To: Jiawen Wu <jiawenwu@trustnetic.com>
Cc: netdev@vger.kernel.org, Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,
Mengyuan Lou <mengyuanlou@net-swift.com>
Subject: Re: [PATCH net-next 2/3] net: txgbe: support TX head write-back mode
Date: Mon, 20 Oct 2025 08:48:52 -0700 [thread overview]
Message-ID: <20251020084852.1a26a330@kernel.org> (raw)
In-Reply-To: <20251020082609.6724-3-jiawenwu@trustnetic.com>
On Mon, 20 Oct 2025 16:26:08 +0800 Jiawen Wu wrote:
> + tx_ring->headwb_mem = dma_alloc_coherent(tx_ring->dev,
> + sizeof(u32),
> + &tx_ring->headwb_dma,
> + GFP_KERNEL);
> + if (!tx_ring->headwb_mem) {
> + dev_info(tx_ring->dev, "Allocate headwb memory failed, disable it\n");
> + return;
> + }
> +
> + memset(tx_ring->headwb_mem, 0, sizeof(u32));
drivers/net/ethernet/wangxun/libwx/wx_lib.c:2932:23-41: WARNING: dma_alloc_coherent used in tx_ring -> headwb_mem already zeroes out memory, so memset is not needed
--
pw-bot: cr
next prev parent reply other threads:[~2025-10-20 15:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-20 8:26 [PATCH net-next 0/3] Implement more features for txgbe devices Jiawen Wu
2025-10-20 8:26 ` [PATCH net-next 1/3] net: txgbe: support RX desc merge mode Jiawen Wu
2025-10-20 8:26 ` [PATCH net-next 2/3] net: txgbe: support TX head write-back mode Jiawen Wu
2025-10-20 15:48 ` Jakub Kicinski [this message]
2025-10-20 8:26 ` [PATCH net-next 3/3] net: txgbe: support RSC offload Jiawen Wu
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