Re: [PATCH] drm/bridge: analogix_dp: Use relaxed MMIO accessors

2017-12-20 Thread Marc Zyngier
On 19/12/17 08:53, Andrzej Hajda wrote: > On 18.12.2017 12:39, Marc Zyngier wrote: >> The analogix DP bridge is entierely driven via MMIO accesses, and >> does not do any DMA that requires coherency with the CPU. Yet, the >> driver uses the non-relaxed accessors, forcing strong barriers to >> be em

Re: [PATCH] drm/bridge: analogix_dp: Use relaxed MMIO accessors

2017-12-19 Thread Andrzej Hajda
On 18.12.2017 12:39, Marc Zyngier wrote: > The analogix DP bridge is entierely driven via MMIO accesses, and > does not do any DMA that requires coherency with the CPU. Yet, the > driver uses the non-relaxed accessors, forcing strong barriers to > be emitted on architectures with a relaxed memory o

[PATCH] drm/bridge: analogix_dp: Use relaxed MMIO accessors

2017-12-19 Thread Marc Zyngier
The analogix DP bridge is entierely driven via MMIO accesses, and does not do any DMA that requires coherency with the CPU. Yet, the driver uses the non-relaxed accessors, forcing strong barriers to be emitted on architectures with a relaxed memory ordering. This is of course completely unnecessar