linux-kernel - Re: [PATCH] thunderbolt: icm: Remove Apple check for Alpine Ridge

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Message-ID: <20170807080623.GP2369@lahna.fi.intel.com>
Date:   Mon, 7 Aug 2017 11:06:23 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, andreas.noever@...il.com,
        michael.jamet@...el.com, yehezkel.bernat@...el.com
Subject: Re: [PATCH] thunderbolt: icm: Remove Apple check for Alpine Ridge

On Mon, Aug 07, 2017 at 04:00:06PM +0800, Kai-Heng Feng wrote:
> On Mon, Aug 7, 2017 at 3:51 PM, Mika Westerberg
> <mika.westerberg@...ux.intel.com> wrote:
> > At this point we should find out that the ICM is already running and the
> > function never calls pci2cio_write().
> 
> I guess you mean this code section:
> 
>         /* Check if the ICM firmware is already running */
>         val = ioread32(nhi->iobase + REG_FW_STS);
>         if (val & REG_FW_STS_ICM_EN)
>                 return 0;

Yes, that's correct.