Re: [PATCH 2/6] ASoC: sunxi: sun4i-codec: Drop redundant error messages

Bui Duc Phuc <[email protected]> Fri, 17 Jul 2026 09:43:24 +0700

Newsgroups	dev.linux.lists.linux-sunxi,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kernel,org.kernel.vger.linux-sound
Message-ID	<CAABR9nG2vYKhMKeSxFstCRcHb8Z2FzDTBuQ3PY261Lipx7FfJw@mail.gmail.com>

Hi all,

Actually, following our discussion about dma_request_chan() not always
printing error logs internally, I did some further investigation into
the code paths and have submitted two patches to address the underlying
issues more comprehensively:

1. A patch for dma_request_chan() itself to prevent potential NULL pointer
   dereferences on invalid arguments:
   https://lore.kernel.org/all/[email protected]/

2. A patch to improve the error handling flow inside
   dmaengine_pcm_request_chan_of() when calling dma_request_chan():
   https://lore.kernel.org/all/[email protected]/

I wanted to share this here to provide more context on the proposed changes to
these DMA engine error-handling flows.

Best regards,
Phuc