linux-kernel - [PATCH v2 0/2] dmaengine: at_hdmac: Regression fix and cleanup

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Message-ID: <221d19e2-6b92-7f38-7d8a-a730f54c33ea@axentia.se>
Date:   Tue, 23 May 2023 19:19:06 +0200
From:   Peter Rosin <peda@...ntia.se>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Tudor Ambarus <tudor.ambarus@...aro.org>,
        Vinod Koul <vkoul@...nel.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        linux-arm-kernel@...ts.infradead.org, dmaengine@...r.kernel.org,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: [PATCH v2 0/2] dmaengine: at_hdmac: Regression fix and cleanup

Hi!

I found a regression in DMA handling on one of our SAMA5D3 boards.

While combing through the regressing commit, a found two unrelated
strange things. The first is the actually problematic change. The
second is a number of suspect defines, that I fail to see how they
can ever do any good.

Cheers,
Peter

Changes since v1 [1], after comments from Tudor Ambarus:

Patch 1/2:
- Don't convert to inline functions.
- Cc stable

Patch 2/2:
- Extend the field instead of killing "too big" field values.
- Add Fixes and R-b tags.
- Cc stable

[1] https://lore.kernel.org/lkml/dc4834cb-fadf-17a5-fbc7-cf500db88f20@axentia.se/


Peter Rosin (2):
  dmaengine: at_hdmac: Repair bitfield macros for peripheral ID handling
  dmaengine: at_hdmac: Extend the Flow Controller bitfield to three bits

 drivers/dma/at_hdmac.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

-- 
2.20.1