linux-kernel - Re: [PATCH v2] dmaengine: stm32-mdma: initialize m2m_hw

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <176648930565.697163.2533356435881488772.b4-ty@kernel.org>
Date: Tue, 23 Dec 2025 16:58:25 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Clément Le Goffic <legoffic.clement@...il.com>, 
 Amelie Delaunay <amelie.delaunay@...s.st.com>
Cc: dmaengine@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Clément Le Goffic <clement.legoffic@...s.st.com>
Subject: Re: [PATCH v2] dmaengine: stm32-mdma: initialize m2m_hw_period and
 ccr to fix warnings


On Wed, 17 Dec 2025 09:15:03 +0100, Amelie Delaunay wrote:
> m2m_hw_period is initialized only when chan_config->m2m_hw is true. This
> triggers a warning:
> ‘m2m_hw_period’ may be used uninitialized [-Wmaybe-uninitialized]
> Although m2m_hw_period is only used when chan_config->m2m_hw is true and
> ignored otherwise, initialize it unconditionally to 0.
> 
> ccr is initialized by stm32_mdma_set_xfer_param() when the sg list is not
> empty. This triggers a warning:
> ‘ccr’ may be used uninitialized [-Wmaybe-uninitialized]
> Indeed, it could be used uninitialized if the sg list is empty. Initialize
> it to 0.
> 
> [...]

Applied, thanks!

[1/1] dmaengine: stm32-mdma: initialize m2m_hw_period and ccr to fix warnings
      commit: aaf3bc0265744adbc2d364964ef409cf118d193d

Best regards,
-- 
~Vinod