[PATCH] spi: s3c64xx: move dma_release_channel to unprepare

Mark Brown broonie at kernel.org
Tue Jun 28 03:31:30 PDT 2022


On Mon, 27 Jun 2022 10:38:45 +0900, Chanho Park wrote:
> This fixes the sequence of dma_release_channel.
> Since commit f52b03c70744 ("spi: s3c64xx: requests spi-dma channel only
> during data transfer"),
> dma_release_channel has been located in the s3c64xx_spi_transfer_one
> but this makes invalid return of can_dma callback.
> __spi_unmap_msg will check whether the request is requested by dma or
> not via can_dma callback. When it is calling to check it, the channels
> will be already released at the end of s3c64xx_spi_transfer_one so the
> callback function will return always "false". So, they can't be unmapped
> from __spi_unmap_msg call. To fix this, we need to add
> unprepare_transfer_hardware callback and move the dma_release_channel
> from s3c64xx_spi_transfer_one to there.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/1] spi: s3c64xx: move dma_release_channel to unprepare
      commit: 82295bc0d192d7e35e0568b18ca66da2c3058fd5

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

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Thanks,
Mark



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