Re: [PATCH] tty: serial: pch_uart: add check for dma_alloc_coherent()

[Andy Shevchenko]

On Wed, Apr 08, 2026 at 03:24:21PM +0800, Zhaoyang Yu wrote:

> Add a check for dma_alloc_coherent() failure to prevent a potential
> NULL pointer dereference in dma_handle_rx(). Properly release DMA
> channels and the PCI device reference using a goto ladder if the
> allocation fails.

Looks like it deserves a Fixes tag.

Also ideally this driver should be converted to one of 8250 cases.
The latter has already DMA support. Note, if you are going this
direction, I have the hardware to test.

-- 
With Best Regards,
Andy Shevchenko