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

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Message-ID: <CAMuHMdWfOo7=g9F_qmhM65yct0P=F3QvkVkHMggBJRLA0gCPYQ@mail.gmail.com>
Date:	Thu, 17 Dec 2015 14:41:16 +0100
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Wolfram Sang <wsa@...-dreams.de>
Cc:	Phil Edworthy <phil.edworthy@...esas.com>,
	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 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.

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
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