Messages in this thread | | | From | Rob Herring <> | Date | Wed, 29 Aug 2018 20:05:47 -0500 | Subject | Re: v4.17 regression: PowerMac G3 won't boot, was Re: [PATCH v5 1/3] of: cache phandle nodes to reduce cost of of_find_node_by_phandle() |
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On Wed, Aug 29, 2018 at 7:44 PM Finn Thain <fthain@telegraphics.com.au> wrote: > > Hi Frank, > > Linux v4.17 and later will no longer boot on a G3 PowerMac. The boot hangs > very early, before any video driver loads. > > Stan and I were able to bisect the regression between v4.16 and v4.17 and > arrived at commit 0b3ce78e90fc ("of: cache phandle nodes to reduce cost of > of_find_node_by_phandle()"). > > I don't see any obvious bug in 0b3ce78e90fc or b9952b5218ad. But if you > revert these from v4.18 (which is also affected) that certainly resolves > the issue.
Perhaps a bad assumption on phandle values causing a problem. Can you provide a dump of all the phandle or linux,phandle values from /proc/device-tree.
Rob
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