[PATCH v4 2/3] drm/lima: Fix dma_resv deadlock at drm object pin time

[Val Packett]

On Thu, May 23 2024 at 12:32:18 +01:00:00, Adrián Larumbe 
<adrian.larumbe at collabora.com> wrote:
> Commit a78027847226 ("drm/gem: Acquire reservation lock in
> drm_gem_{pin/unpin}()") moved locking the DRM object's dma 
> reservation to
> drm_gem_pin(), but Lima's pin callback kept calling drm_gem_shmem_pin,
> which also tries to lock the same dma_resv, leading to a double lock
> situation.
> 
> As was already done for Panfrost in the previous commit, fix it by
> replacing drm_gem_shmem_pin() with its locked variant.

Hi, just found this while dealing with compositor lockups upon 
launching a GL client on an old Rockchip RK3066 tablet, and it did fix 
the problem :) Thank you.

Tested-by: Val Packett <val at packett.cool>