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authorLucas Stach <l.stach@pengutronix.de>2019-07-05 19:17:20 +0200
committerLucas Stach <l.stach@pengutronix.de>2019-08-09 14:15:39 +0200
commitec4fa3c2b46385a37dea87e8a87816cd02c0fa33 (patch)
tree4ee096f9ad071bcd3f3fdecd2ed66517374773a1
parentfceac6efc853d019cad017839cfcc49923aa56af (diff)
downloadlinux-ec4fa3c2b46385a37dea87e8a87816cd02c0fa33.tar.gz
linux-ec4fa3c2b46385a37dea87e8a87816cd02c0fa33.tar.xz
drm/etnaviv: simplify unbind checks
Remember if the GPU has been sucessfully initialized. Only in that case do we need to clean up various structures in the unbind path. If the GPU hasn't been sucessfully initialized all the cleanups should happen in the failure paths of the init function. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Guido Günther <agx@sigxcpu.org> --- v3: dropped superfluous whitespace
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_gpu.c19
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_gpu.h1
2 files changed, 7 insertions, 13 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 4822549500ee..37f7dd69864e 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -799,17 +799,16 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
pm_runtime_mark_last_busy(gpu->dev);
pm_runtime_put_autosuspend(gpu->dev);
+ gpu->initialized = true;
+
return 0;
free_buffer:
etnaviv_cmdbuf_free(&gpu->buffer);
- gpu->buffer.suballoc = NULL;
destroy_suballoc:
etnaviv_cmdbuf_suballoc_destroy(gpu->cmdbuf_suballoc);
- gpu->cmdbuf_suballoc = NULL;
destroy_iommu:
etnaviv_iommu_destroy(gpu->mmu);
- gpu->mmu = NULL;
fail:
pm_runtime_mark_last_busy(gpu->dev);
pm_runtime_put_autosuspend(gpu->dev);
@@ -1521,7 +1520,7 @@ int etnaviv_gpu_wait_idle(struct etnaviv_gpu *gpu, unsigned int timeout_ms)
static int etnaviv_gpu_hw_suspend(struct etnaviv_gpu *gpu)
{
- if (gpu->buffer.suballoc) {
+ if (gpu->initialized) {
/* Replace the last WAIT with END */
mutex_lock(&gpu->lock);
etnaviv_buffer_end(gpu);
@@ -1680,17 +1679,11 @@ static void etnaviv_gpu_unbind(struct device *dev, struct device *master,
etnaviv_gpu_hw_suspend(gpu);
#endif
- if (gpu->buffer.suballoc)
+ if (gpu->initialized) {
etnaviv_cmdbuf_free(&gpu->buffer);
-
- if (gpu->cmdbuf_suballoc) {
etnaviv_cmdbuf_suballoc_destroy(gpu->cmdbuf_suballoc);
- gpu->cmdbuf_suballoc = NULL;
- }
-
- if (gpu->mmu) {
etnaviv_iommu_destroy(gpu->mmu);
- gpu->mmu = NULL;
+ gpu->initialized = false;
}
gpu->drm = NULL;
@@ -1827,7 +1820,7 @@ static int etnaviv_gpu_rpm_resume(struct device *dev)
return ret;
/* Re-initialise the basic hardware state */
- if (gpu->drm && gpu->buffer.suballoc) {
+ if (gpu->drm && gpu->initialized) {
ret = etnaviv_gpu_hw_resume(gpu);
if (ret) {
etnaviv_gpu_clk_disable(gpu);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
index 9bcf151f706b..b06c7c98d522 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
@@ -99,6 +99,7 @@ struct etnaviv_gpu {
enum etnaviv_sec_mode sec_mode;
struct workqueue_struct *wq;
struct drm_gpu_scheduler sched;
+ bool initialized;
/* 'ring'-buffer: */
struct etnaviv_cmdbuf buffer;