[PATCH v3 16/20] drm/amd: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL_BEGIN()

From: Fernando Ramos
Date: Thu Oct 07 2021 - 15:39:28 EST


As requested in Documentation/gpu/todo.rst, replace driver calls to
drm_modeset_lock_all() with DRM_MODESET_LOCK_ALL_BEGIN() and
DRM_MODESET_LOCK_ALL_END()

Signed-off-by: Fernando Ramos <greenfoo@xxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index dc50c05f23fc..0ea7bdbc8482 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -40,6 +40,7 @@
#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_vblank.h>
+#include <drm/drm_drv.h>

static void amdgpu_display_flip_callback(struct dma_fence *f,
struct dma_fence_cb *cb)
@@ -1574,16 +1575,21 @@ int amdgpu_display_suspend_helper(struct amdgpu_device *adev)
struct drm_crtc *crtc;
struct drm_connector *connector;
struct drm_connector_list_iter iter;
- int r;
+ struct drm_modeset_acquire_ctx ctx;
+ int r, ret;

/* turn off display hw */
- drm_modeset_lock_all(dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
drm_connector_list_iter_begin(dev, &iter);
drm_for_each_connector_iter(connector, &iter)
drm_helper_connector_dpms(connector,
DRM_MODE_DPMS_OFF);
drm_connector_list_iter_end(&iter);
- drm_modeset_unlock_all(dev);
+ DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
+
+ if (ret)
+ return ret;
+
/* unpin the front buffers and cursors */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
@@ -1621,7 +1627,8 @@ int amdgpu_display_resume_helper(struct amdgpu_device *adev)
struct drm_connector *connector;
struct drm_connector_list_iter iter;
struct drm_crtc *crtc;
- int r;
+ struct drm_modeset_acquire_ctx ctx;
+ int r, ret;

/* pin cursors */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
@@ -1643,7 +1650,7 @@ int amdgpu_display_resume_helper(struct amdgpu_device *adev)
drm_helper_resume_force_mode(dev);

/* turn on display hw */
- drm_modeset_lock_all(dev);
+ DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);

drm_connector_list_iter_begin(dev, &iter);
drm_for_each_connector_iter(connector, &iter)
@@ -1651,8 +1658,8 @@ int amdgpu_display_resume_helper(struct amdgpu_device *adev)
DRM_MODE_DPMS_ON);
drm_connector_list_iter_end(&iter);

- drm_modeset_unlock_all(dev);
+ DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);

- return 0;
+ return ret;
}

--
2.33.0