[lockdep] drm/i915: possible circular locking dependency in i915 driver init

2016-08-15 Thread Masami Hiramatsu
On Mon, 15 Aug 2016 08:39:29 +0200 Daniel Vetter wrote: > On Sun, Aug 14, 2016 at 11:01:35PM +0900, Masami Hiramatsu wrote: > > Hello, > > > > I've found a suspicious circular locking dependency in i915 by lockdep. > > It seems main driver initialization thread and sub fbdev configuration > > th

[lockdep] drm/i915: possible circular locking dependency in i915 driver init

2016-08-15 Thread Daniel Vetter
On Sun, Aug 14, 2016 at 11:01:35PM +0900, Masami Hiramatsu wrote: > Hello, > > I've found a suspicious circular locking dependency in i915 by lockdep. > It seems main driver initialization thread and sub fbdev configuration > thread take locks in different order implicitly. Please check it. > > T

[lockdep] drm/i915: possible circular locking dependency in i915 driver init

2016-08-14 Thread Masami Hiramatsu
Hello, I've found a suspicious circular locking dependency in i915 by lockdep. It seems main driver initialization thread and sub fbdev configuration thread take locks in different order implicitly. Please check it. The lockdep report is here. [4.254984] =