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Groups > linux.kernel > #1606219
| From | Linas Vepstas <linasvepstas@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] pci-error-recovery: doc cleanup |
| Date | 2017-03-22 06:50 +0100 |
| Message-ID | <tnHjI-5ZR-9@gated-at.bofh.it> (permalink) |
| References | <tnsaZ-3W4-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi, On Tue, Mar 21, 2017 at 9:24 PM, Cao jin <caoj.fnst@cn.fujitsu.com> wrote: > Include whitespace shooting; correction; typo fix; superfluous word > dropping. > > diff --git a/Documentation/PCI/pci-error-recovery.txt b/Documentation/PCI/pci-error-recovery.txt > index da3b217..0b6bb3e 100644 > --- a/Documentation/PCI/pci-error-recovery.txt > +++ b/Documentation/PCI/pci-error-recovery.txt > > @@ -231,14 +231,14 @@ proceeds to STEP 4 (Slot Reset) > STEP 3: Link Reset > ------------------ > The platform resets the link. This is a PCI-Express specific step > -and is done whenever a non-fatal error has been detected that can be > +and is done whenever a fatal error has been detected that can be > "solved" by resetting the link. First: I thought I saw a patch a few months ago that proposed removing the link rest step. I don't know if the patch was accepted or not. If link resets are still supported, then they can only fix NON-fatal errors: basically, one resets the link, and only the link; one does NOT reset either the device driver, nor the device state. The idea is that after a link reset, communications with the device can immediately resume right where it left off. (this can be hard in practice, if the driver/firmware doesn't know what it was doing when the error occurred. this might be why no one implements it.) Anyway, the whole point of a link reset is that it is explicitly a non-fatal error. --linas
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[PATCH] pci-error-recovery: doc cleanup Cao jin <caoj.fnst@cn.fujitsu.com> - 2017-03-21 14:40 +0100
Re: [PATCH] pci-error-recovery: doc cleanup Linas Vepstas <linasvepstas@gmail.com> - 2017-03-22 06:50 +0100
Re: [PATCH] pci-error-recovery: doc cleanup Cao jin <caoj.fnst@cn.fujitsu.com> - 2017-03-22 07:50 +0100
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