Re: [PATCH] ahci: enable GHC.AE bit before set GHC.HR

From: Alan Cox
Date: Wed Sep 26 2007 - 12:04:44 EST

On Wed, 26 Sep 2007 10:33:28 -0400
Jeff Garzik <jeff@xxxxxxxxxx> wrote:

> Alan Cox wrote:
> >>> NAK - mmio is an iomap so writel and readl are the wrong things to use
> >> The patch is consistent with the rest of the driver.
> >> You are welcome to submit a patch to convert ahci to using ioremap.
> >
> > You could just flip the relevant function to use ioread while you are
> > tidying it up, instead of spreading new bugs into the code.
> No, as I just noted above, the proper fix for this driver is to use
> ioremap rather than pci_iomap.
> Adding support to ahci for legacy PIO is completely pointless.

iomap isn't just for legacy PIO. It allows us to handle future weird
mappings in ways ioremap cannot.
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