[PATCH 16/16] Revert "drm: cleanup: drm_modeset_lock_all_ctx() --> DRM_MODESET_LOCK_ALL_BEGIN()"

[Sean Paul]

From: Sean Paul <seanp...@chromium.org>

This reverts commit 21dde40902d2636f70766b3154931de57e1215e9.

This patchset breaks on intel platforms and was previously NACK'd by
Ville.

Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Fernando Ramos <green...@u92.eu>
Signed-off-by: Sean Paul <seanp...@chromium.org>
---
 drivers/gpu/drm/drm_client_modeset.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_client_modeset.c 
b/drivers/gpu/drm/drm_client_modeset.c
index 5f5184f071ed..ced09c7c06f9 100644
--- a/drivers/gpu/drm/drm_client_modeset.c
+++ b/drivers/gpu/drm/drm_client_modeset.c
@@ -574,7 +574,6 @@ static bool drm_client_firmware_config(struct 
drm_client_dev *client,
        int num_connectors_detected = 0;
        int num_tiled_conns = 0;
        struct drm_modeset_acquire_ctx ctx;
-       int err;
 
        if (!drm_drv_uses_atomic_modeset(dev))
                return false;
@@ -586,7 +585,10 @@ static bool drm_client_firmware_config(struct 
drm_client_dev *client,
        if (!save_enabled)
                return false;
 
-       DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err);
+       drm_modeset_acquire_init(&ctx, 0);
+
+       while (drm_modeset_lock_all_ctx(dev, &ctx) != 0)
+               drm_modeset_backoff(&ctx);
 
        memcpy(save_enabled, enabled, count);
        mask = GENMASK(count - 1, 0);
@@ -741,7 +743,8 @@ static bool drm_client_firmware_config(struct 
drm_client_dev *client,
                ret = false;
        }
 
-       DRM_MODESET_LOCK_ALL_END(dev, ctx, err);
+       drm_modeset_drop_locks(&ctx);
+       drm_modeset_acquire_fini(&ctx);
 
        kfree(save_enabled);
        return ret;
-- 
Sean Paul, Software Engineer, Google / Chromium OS