[PATCH v2] i2c: mxs: fix DMA channel leak on probe error

[Andi Shyti]

Hi Ruoyu,

On Sat, Aug 15, 2026 at 11:17:20PM +0800, Ruoyu Wang wrote:
> mxs_i2c_probe() requests an exclusive DMA channel before resetting the
> controller and registering the I2C adapter. If either later operation
> fails, probe returns without releasing the channel because the remove
> callback is not invoked after a failed probe.
> 
> Use devm_dma_request_chan() so the device core releases the channel on
> probe failure and driver detach. Remove the manual release from the
> remove callback because the channel is now device-managed.
> 
> This issue was found by a static analysis checker and confirmed by
> manual source review.
> 
> Fixes: 62885f59a261 ("MXS: Implement DMA support into mxs-i2c")
> Assisted-by: unnamed:claude-opus-4.8 typestate
> Signed-off-by: Ruoyu Wang <ruoyuw560 at gmail.com>

merged to i2c/i2c-2.

Thanks,
Andi