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Subject: Re: [PATCH] net: ravb: Fix dma_addr_t truncation in error case
From: patchwork-bot+netdevbpf@kernel.org
Message-Id: 
 <170525102408.11320.1615500877884972571.git-patchwork-notify@kernel.org>
Date: Sun, 14 Jan 2024 16:50:24 +0000
References: <20240113042221.480650-1-nikita.yoush@cogentembedded.com>
In-Reply-To: <20240113042221.480650-1-nikita.yoush@cogentembedded.com>
To: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
 s.shtylyov@omp.ru, claudiu.beznea.uj@bp.renesas.com,
 yoshihiro.shimoda.uh@renesas.com, wsa+renesas@sang-engineering.com,
 u.kleine-koenig@pengutronix.de, netdev@vger.kernel.org,
 linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@davemloft.net>:

On Sat, 13 Jan 2024 10:22:21 +0600 you wrote:
> In ravb_start_xmit(), ravb driver uses u32 variable to store result of
> dma_map_single() call. Since ravb hardware has 32-bit address fields in
> descriptors, this works properly when mapping is successful - it is
> platform's job to provide mapping addresses that fit into hardware
> limitations.
> 
> However, in failure case dma_map_single() returns DMA_MAPPING_ERROR
> constant that is 64-bit when dma_addr_t is 64-bit. Storing this constant
> in u32 leads to truncation, and further call to dma_mapping_error()
> fails to notice the error.
> 
> [...]

Here is the summary with links:
  - net: ravb: Fix dma_addr_t truncation in error case
    https://git.kernel.org/netdev/net/c/e327b2372bc0

You are awesome, thank you!
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