linux-kernel - RE: [PATCH 2/4] PCI: rcar: Support runtime PM link state L1 handling in pcie-rcar

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Message-ID: <PS1PR06MB1180C86CD41FE69F44387D59F5E10@PS1PR06MB1180.apcprd06.prod.outlook.com>
Date:	Fri, 18 Dec 2015 13:44:04 +0000
From:	Phil Edworthy <phil.edworthy@...esas.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Wolfram Sang <wsa@...-dreams.de>
CC:	Simon Horman <horms@...ge.net.au>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-pci <linux-pci@...r.kernel.org>,
	Linux-sh list <linux-sh@...r.kernel.org>
Subject: RE: [PATCH 2/4] PCI: rcar: Support runtime PM link state L1 handling
 in pcie-rcar

On 17 December 2015 13:41, Geert Uytterhoeven wrote:
> On Thu, Dec 17, 2015 at 2:30 PM, Wolfram Sang <wsa@...-dreams.de> wrote:
> >> +             /* Wait until we are in L1 */
> >> +             while (!(val & L1FAEG))
> >> +                     val = rcar_pci_read_reg(pcie, PMSR);
> >
> > No timeout?
> 
> And no cpu_relax() in each iteration.
Sure, I'll fix that.

Thanks
Phil

 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds