Re: [PATCH] sound: pci: mixart: use managed resources for PCI and DMA allocations

[Takashi Iwai <tiwai@suse.de>]

On Tue, 11 Aug 2026 06:22:41 +0200,
Rosen Penev wrote:
> 
> Convert the Digigram miXart driver to use managed (devm_) resources
> for PCI device management, IRQ allocation, memory mapping, and DMA
> buffer allocation. This simplifies error handling paths and reduces
> the risk of resource leaks.
> 
> - Use pcim_enable_device() and pcim_iomap_region() for managed PCI
>   resource handling
> - Use devm_kzalloc() for manager structure allocation
> - Use devm_request_threaded_irq() for IRQ allocation
> - Use snd_devm_card_new() for sound card creation
> - Use snd_devm_alloc_pages() for DMA buffer allocation
> - Simplify snd_mixart_free() to only handle mailbox shutdown and
>   board reset since other resources are now auto-released
> 
> Clean up trailing whitespace on touched lines.
> 
> Signed-off-by: Rosen Penev <rosenp@gmail.com>

I guess this is only compile-tested?  This driver is somewhat special,
and it composes of multiple sound-card objects per device, hence you
can't use devres under the card.


thanks,

Takashi