Re: [PATCH] ata: ahci: Lookup PCS register offset based on PCI device ID

From: Christoph Hellwig
Date: Mon Aug 12 2019 - 14:06:18 EST

On Mon, Aug 12, 2019 at 05:49:29PM +0000, Stephen Douthit wrote:
> Does anyone know the background of the original PCS workaround?

Based on a few git-blame iterations on history.git the original PCS
handling (just when initializing) goes back to this BK commit: