[PATCH] ath12k: add module param to control MSI mode and address width

[Johannes Berg]

On Tue, 2025-06-24 at 10:26 -0700, Jeff Johnson wrote:
> On 6/24/2025 9:50 AM, Govind Singh wrote:
> > This patch adds two module parameters to the ath12k PCI driver.
> 
> Please use imperative voice.
> And it is preferential to first describe the problem, and then describe the
> proposed solution.
> 
> > 
> >  - ath12k_msi_mode: Allows selecting the MSI allocation mode.
> >    * 0 = multi-vector MSI (default)
> >    * 1 = single-vector MSI
> > 
> >  - ath12k_32bit_msi: Forces the use of 32-bit MSI addressing
> >    by setting pdev->no_64bit_msi = 1 before IRQ vector allocation.
> > 
> > These options are useful for working around hardware or platform
> > limitations(ex:  i.MX 8M Plus) where 64-bit MSI or multi-vector MSI
> > allocations fails or cause stability issues.
> 
> So there is no way to detect this?

For the record, Jakub has very much been pushing back against new module
parameters, so I don't think we should take this.

johannes