Re: [RFC PATCH] PCI: remove access to pci_[enable|disable]_msi() for drivers

[Greg KH <gregkh@suse.de>]

On Thu, Jun 09, 2005 at 06:54:31AM +0200, Stefan Smietanowski wrote:
> > 
> > The issue is, if pci_enable_msix() fails, we want to fall back to MSI,
> > so you need to call pci_enable_msi() for that (after calling
> > pci_disable_msi() before calling pci_enable_msix(), what a mess...)
> > 
> > So we still need both functions, and for MSI-X, the logic involved in
> > enabling it is horrible.  Let me see if this can be made saner...
> 
> Why not make pci_switch_to_msix() (yeah, horrible name) instead?
> 
> pci_switch_to_msix(dev)
> {
>   pci_disable_msi(dev);
>   if (!psi_enable_msix(dev))
>     pci_enable_msi(dev);
> }
> 
> And it can naturally inform the caller if it failed or not.

Yes, that would work, if you want to go down that path :)

After trying this all out, I'm convinced that we should just stick with
what we have.

thanks,

greg k-h
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/