From: Lucas Stach l.stach@pengutronix.de
commit 725cbc7884c37f3b4f1777bc1aea6432cded8ca5 upstream.
When the GPU is reset both the current exec state, as well as all MMU state is lost. Move the driver side state tracking into the reset function to keep hardware and software state from diverging.
Cc: stable@vger.kernel.org # 5.4 Signed-off-by: Lucas Stach l.stach@pengutronix.de Tested-by: Michael Walle michael@walle.cc Tested-by: Marek Vasut marex@denx.de Reviewed-by: Christian Gmeiner christian.gmeiner@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -562,6 +562,8 @@ static int etnaviv_hw_reset(struct etnav etnaviv_gpu_update_clock(gpu);
gpu->fe_running = false; + gpu->exec_state = -1; + gpu->mmu_context = NULL;
return 0; } @@ -818,7 +820,6 @@ int etnaviv_gpu_init(struct etnaviv_gpu /* Now program the hardware */ mutex_lock(&gpu->lock); etnaviv_gpu_hw_init(gpu); - gpu->exec_state = -1; mutex_unlock(&gpu->lock);
pm_runtime_mark_last_busy(gpu->dev); @@ -1043,8 +1044,6 @@ void etnaviv_gpu_recover_hang(struct etn spin_unlock(&gpu->event_spinlock);
etnaviv_gpu_hw_init(gpu); - gpu->exec_state = -1; - gpu->mmu_context = NULL;
mutex_unlock(&gpu->lock); pm_runtime_mark_last_busy(gpu->dev);