linux-kernel - Re: [PATCH 2/8] thunderbolt: Move NVM upgrade support flag to struct icm

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Message-ID: <20190805131507.GR2640@lahna.fi.intel.com>
Date:   Mon, 5 Aug 2019 16:15:07 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Mario.Limonciello@...l.com
Cc:     yehezkelshb@...il.com, linux-kernel@...r.kernel.org,
        andreas.noever@...il.com, michael.jamet@...el.com,
        rjw@...ysocki.net, lenb@...nel.org, lukas@...ner.de,
        anthony.wong@...onical.com, linux-acpi@...r.kernel.org
Subject: Re: [PATCH 2/8] thunderbolt: Move NVM upgrade support flag to struct
 icm

On Tue, Jul 09, 2019 at 03:11:15PM +0000, Mario.Limonciello@...l.com wrote:
> > -----Original Message-----
> > From: Mika Westerberg <mika.westerberg@...ux.intel.com>
> > Sent: Friday, July 5, 2019 5:58 AM
> > To: Yehezkel Bernat
> > Cc: LKML; Andreas Noever; Michael Jamet; Rafael J . Wysocki; Len Brown; Lukas
> > Wunner; Limonciello, Mario; Anthony Wong; linux-acpi@...r.kernel.org
> > Subject: Re: [PATCH 2/8] thunderbolt: Move NVM upgrade support flag to struct
> > icm
> > 
> > 
> > [EXTERNAL EMAIL]
> > 
> > On Fri, Jul 05, 2019 at 01:52:49PM +0300, Yehezkel Bernat wrote:
> > > > @@ -2054,6 +2059,7 @@ struct tb *icm_probe(struct tb_nhi *nhi)
> > > >         case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_NHI:
> > > >         case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_NHI:
> > > >                 icm->max_boot_acl = ICM_AR_PREBOOT_ACL_ENTRIES;
> > > > +               icm->can_upgrade_nvm = true;
> > >
> > > Shouldn't this be also !x86_apple_machine just like AR?
> > > (For FR, we don't use ICM on Apple machines, as much as I remember, so it's fine
> > > to enable it there unconditionally for ICM code path.)
> > 
> > Yes, good point. I'll fix it up.
> 
> Another thought - does the TR or AR ID's setting can_upgrade_nvm to !x86_apple_machine
> show up in anything like a dock or is it only host controllers?  If it's in docks, then it might be worth
> only blocking on apple if it's a host.

It affects only hosts so on Apple system you can't upgrade host NVM but
docks and other devices you can.