ccf vs iommu vs drm locking fun

2014-09-04 Thread Rob Clark
So, I was looking at the below lockdep splat, and discussing it a bit w/ sboyd on IRC, and came to a slightly disturbing realization.. The interaction between prepare_lock and debugfs bits is a little bit worrying. In particular, it is probably not a good idea to assume that anyone who needs to

ccf vs iommu vs drm locking fun

2014-09-04 Thread Stephen Boyd
On 09/04/14 17:46, Rob Clark wrote: > So, I was looking at the below lockdep splat, and discussing it a bit > w/ sboyd on IRC, and came to a slightly disturbing realization.. > > The interaction between prepare_lock and debugfs bits is a little bit > worrying. In particular, it is probably not a