linux-kernel - Re: [PATCH] net: ethernet: stmmac: Do not use unreachable() in ipq806x_gmac

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Message-Id: <162832620705.3915.11584546852979312079.git-patchwork-notify@kernel.org>
Date:   Sat, 07 Aug 2021 08:50:07 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     peppe.cavallaro@...com, alexandre.torgue@...s.st.com,
        joabreu@...opsys.com, davem@...emloft.net, kuba@...nel.org,
        mcoquelin.stm32@...il.com, ndesaulniers@...gle.com,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com, samitolvanen@...gle.com
Subject: Re: [PATCH] net: ethernet: stmmac: Do not use unreachable() in
 ipq806x_gmac_probe()

Hello:

This patch was applied to netdev/net-next.git (refs/heads/master):

On Fri,  6 Aug 2021 12:13:40 -0700 you wrote:
> When compiling with clang in certain configurations, an objtool warning
> appears:
> 
> drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.o: warning: objtool:
> ipq806x_gmac_probe() falls through to next function phy_modes()
> 
> This happens because the unreachable annotation in the third switch
> statement is not eliminated. The compiler should know that the first
> default case would prevent the second and third from being reached as
> the comment notes but sanitizer options can make it harder for the
> compiler to reason this out.
> 
> [...]

Here is the summary with links:
  - net: ethernet: stmmac: Do not use unreachable() in ipq806x_gmac_probe()
    https://git.kernel.org/netdev/net-next/c/4367355dd909

You are awesome, thank you!
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