This patch series aims to fix some issues inside the driver's DMA
handling.
It also uses newer I2C DMA API.

Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
---
Changes in v4:
- Patch[1]: Remove all `chan_dev` variable occurrencies
- Patch[2]:
    - Refine commit message
    - Use the dma_callback to factorize the code
- Patch[3]: Refine commit message
- Link to v3: https://lore.kernel.org/r/20250630-i2c-upstream-v3-0-7a23ab26683a@foss.st.com

Changes in v3:
- Add Alain Volmat's "Acked-by" on patch 1 and 2
- Link to v2: https://lore.kernel.org/r/20250627-i2c-upstream-v2-0-8c14523481dc@foss.st.com

Changes in v2:
- Fix the dev used in dma_unmap also in the error path of
  `stm32_i2c_prep_dma_xfer`
- Add a dma_unmap_single also in the ITs error handler
- Add Alain Volmat's "Acked-by" on patch 3
- Link to v1: https://lore.kernel.org/r/20250616-i2c-upstream-v1-0-42d3d5374e65@foss.st.com

---
Clément Le Goffic (3):
      i2c: stm32: fix the device used for the DMA map
      i2c: stm32f7: unmap DMA mapped buffer
      i2c: stm32f7: support i2c_*_dma_safe_msg_buf APIs

 drivers/i2c/busses/i2c-stm32.c   |  8 +++---
 drivers/i2c/busses/i2c-stm32f7.c | 56 +++++++++++++++++++++-------------------
 2 files changed, 33 insertions(+), 31 deletions(-)
---
base-commit: d0b3b7b22dfa1f4b515fd3a295b3fd958f9e81af
change-id: 20250527-i2c-upstream-e5b69501359a

Best regards,
--  
Clément Le Goffic <clement.legoffic@foss.st.com>

Hi Clement,

Thanks for following up on the reviews.

> Clément Le Goffic (3):
>       i2c: stm32: fix the device used for the DMA map
>       i2c: stm32f7: unmap DMA mapped buffer

I applied the two above in i2c/i2c-host-fixes. I'm not sure we
need the "Fixes:" tag in the first patch, though, as we are not
fixing a real bug. But I'm keeping it there for the time being.

>       i2c: stm32f7: support i2c_*_dma_safe_msg_buf APIs

This one depends on the previous two to be appliex, so that for
now I added it in i2c/i2c-host-next. I will place it in the
proper branch after the weekly pull request.

Thanks,
Andi

Hi Clément,

On Fri, Jul 04, 2025 at 10:39:13AM +0200, Clément Le Goffic wrote:
> This patch series aims to fix some issues inside the driver's DMA
> handling.
> It also uses newer I2C DMA API.
> 
> Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
> ---
> Changes in v4:
> - Patch[1]: Remove all `chan_dev` variable occurrencies
> - Patch[2]:
>     - Refine commit message
>     - Use the dma_callback to factorize the code
> - Patch[3]: Refine commit message
> - Link to v3: https://lore.kernel.org/r/20250630-i2c-upstream-v3-0-7a23ab26683a@foss.st.com
> 
> Changes in v3:
> - Add Alain Volmat's "Acked-by" on patch 1 and 2
> - Link to v2: https://lore.kernel.org/r/20250627-i2c-upstream-v2-0-8c14523481dc@foss.st.com
> 
> Changes in v2:
> - Fix the dev used in dma_unmap also in the error path of
>   `stm32_i2c_prep_dma_xfer`
> - Add a dma_unmap_single also in the ITs error handler
> - Add Alain Volmat's "Acked-by" on patch 3
> - Link to v1: https://lore.kernel.org/r/20250616-i2c-upstream-v1-0-42d3d5374e65@foss.st.com
> 
> ---
> Clément Le Goffic (3):
>       i2c: stm32: fix the device used for the DMA map
>       i2c: stm32f7: unmap DMA mapped buffer
>       i2c: stm32f7: support i2c_*_dma_safe_msg_buf APIs
> 
>  drivers/i2c/busses/i2c-stm32.c   |  8 +++---
>  drivers/i2c/busses/i2c-stm32f7.c | 56 +++++++++++++++++++++-------------------
>  2 files changed, 33 insertions(+), 31 deletions(-)
> ---

Thanks for this new version of the serie.
This all looks good to me. My Acked-by are already set since v3 so
nothing more from me.

Regards,
Alain

> base-commit: d0b3b7b22dfa1f4b515fd3a295b3fd958f9e81af
> change-id: 20250527-i2c-upstream-e5b69501359a
> 
> Best regards,
> --  
> Clément Le Goffic <clement.legoffic@foss.st.com>
>