Re: [PATCH] add delay between port write and port read

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To: "Maciej W. Rozycki" <macro@xxxxxxxxxxxxxx>
Subject: Re: [PATCH] add delay between port write and port read
From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Wed, 27 Feb 2019 11:40:21 -0800
Cc: Mikulas Patocka <mpatocka@xxxxxxxxxx>, Will Deacon <will.deacon@xxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Sinan Kaya <okaya@xxxxxxxxxxxxxx>, Matt Turner <mattst88@xxxxxxxxx>, alpha <linux-alpha@xxxxxxxxxxxxxxx>, Sinan Kaya <okaya@xxxxxxxxxx>
In-reply-to: <alpine.LFD.2.21.1902271851020.15669@eddie.linux-mips.org>
References: <alpine.LRH.2.02.1902191234040.20738@file01.intranet.prod.int.rdu2.redhat.com> <alpine.LFD.2.21.1902191933170.2486@eddie.linux-mips.org> <alpine.LRH.2.02.1902201000370.18786@file01.intranet.prod.int.rdu2.redhat.com> <alpine.LFD.2.21.1902201526380.2486@eddie.linux-mips.org> <CAK8P3a3erCa177cp7ap_JqRREQqwj9sTQi7JZH_=1601qT90AQ@mail.gmail.com> <alpine.LRH.2.02.1902201229490.18962@file01.intranet.prod.int.rdu2.redhat.com> <alpine.LFD.2.21.1902202004240.2486@eddie.linux-mips.org> <alpine.LRH.2.02.1902211426590.12431@file01.intranet.prod.int.rdu2.redhat.com> <alpine.LFD.2.21.1902211948200.2486@eddie.linux-mips.org> <CAHk-=wgF2oP2o8eSA5CRmo-O8K9xZPM0wmGddE6F1W-T4qGapg@mail.gmail.com> <20190226183755.GD28709@fuggles.cambridge.arm.com> <CAHk-=wjMTeS=GkrRrsfTEo3UxRQ4YcXKM_h1RSFdjYQM7jyMcw@mail.gmail.com> <alpine.LRH.2.02.1902271202390.9163@file01.intranet.prod.int.rdu2.redhat.com> <CAHk-=whsA5a43GMtVHags7tscP7Cs-wt+SR674XAg0Bzm0GxRw@mail.gmail.com> <alpine.LFD.2.21.1902271851020.15669@eddie.linux-mips.org>

On Wed, Feb 27, 2019 at 10:54 AM Maciej W. Rozycki <macro@xxxxxxxxxxxxxx> wrote:
>
>  For that reason though we don't have the trailing barrier in the
> `readX_relaxed' accessors in the MIPS port.

Makes sense. And alpha should probably follow suit.

             Linus

References:
- Re: [PATCH] add delay between port write and port read
  - From: Mikulas Patocka
- Re: [PATCH] add delay between port write and port read
  - From: Maciej W. Rozycki
- Re: [PATCH] add delay between port write and port read
  - From: Mikulas Patocka
- Re: [PATCH] add delay between port write and port read
  - From: Maciej W. Rozycki
- Re: [PATCH] add delay between port write and port read
  - From: Arnd Bergmann
- Re: [PATCH] add delay between port write and port read
  - From: Mikulas Patocka
- Re: [PATCH] add delay between port write and port read
  - From: Maciej W. Rozycki
- Re: [PATCH] add delay between port write and port read
  - From: Mikulas Patocka
- Re: [PATCH] add delay between port write and port read
  - From: Maciej W. Rozycki
- Re: [PATCH] add delay between port write and port read
  - From: Linus Torvalds
- Re: [PATCH] add delay between port write and port read
  - From: Will Deacon
- Re: [PATCH] add delay between port write and port read
  - From: Linus Torvalds
- Re: [PATCH] add delay between port write and port read
  - From: Mikulas Patocka
- Re: [PATCH] add delay between port write and port read
  - From: Linus Torvalds
- Re: [PATCH] add delay between port write and port read
  - From: Maciej W. Rozycki

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