drm: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL_BEGIN()

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@u92.eu>
Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210924064324.229457-5-greenfoo@u92.eu

diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c
index 5f5184f..43f7725 100644 (file)
--- a/drivers/gpu/drm/drm_client_modeset.c
+++ b/drivers/gpu/drm/drm_client_modeset.c
@@ -1062,9 +1062,10 @@ static int drm_client_modeset_commit_legacy(struct drm_client_dev *client)
        struct drm_device *dev = client->dev;
        struct drm_mode_set *mode_set;
        struct drm_plane *plane;
+       struct drm_modeset_acquire_ctx ctx;
        int ret = 0;
 
-       drm_modeset_lock_all(dev);
+       DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
        drm_for_each_plane(plane, dev) {
                if (plane->type != DRM_PLANE_TYPE_PRIMARY)
                        drm_plane_force_disable(plane);
@@ -1093,7 +1094,7 @@ static int drm_client_modeset_commit_legacy(struct drm_client_dev *client)
                        goto out;
        }
 out:
-       drm_modeset_unlock_all(dev);
+       DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 
        return ret;
 }

diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index bff9175..f3ce073 100644 (file)
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -218,11 +218,14 @@ static void __drm_helper_disable_unused_functions(struct drm_device *dev)
  */
 void drm_helper_disable_unused_functions(struct drm_device *dev)
 {
+       struct drm_modeset_acquire_ctx ctx;
+       int ret;
+
        WARN_ON(drm_drv_uses_atomic_modeset(dev));
 
-       drm_modeset_lock_all(dev);
+       DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
        __drm_helper_disable_unused_functions(dev);
-       drm_modeset_unlock_all(dev);
+       DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 }
 EXPORT_SYMBOL(drm_helper_disable_unused_functions);
 
@@ -942,12 +945,14 @@ void drm_helper_resume_force_mode(struct drm_device *dev)
        struct drm_crtc *crtc;
        struct drm_encoder *encoder;
        const struct drm_crtc_helper_funcs *crtc_funcs;
+       struct drm_modeset_acquire_ctx ctx;
        int encoder_dpms;
        bool ret;
+       int err;
 
        WARN_ON(drm_drv_uses_atomic_modeset(dev));
 
-       drm_modeset_lock_all(dev);
+       DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err);
        drm_for_each_crtc(crtc, dev) {
 
                if (!crtc->enabled)
@@ -982,7 +987,7 @@ void drm_helper_resume_force_mode(struct drm_device *dev)
 
        /* disable the unused connectors while restoring the modesetting */
        __drm_helper_disable_unused_functions(dev);
-       drm_modeset_unlock_all(dev);
+       DRM_MODESET_LOCK_ALL_END(dev, ctx, err);
 }
 EXPORT_SYMBOL(drm_helper_resume_force_mode);
 
@@ -1002,9 +1007,10 @@ EXPORT_SYMBOL(drm_helper_resume_force_mode);
 int drm_helper_force_disable_all(struct drm_device *dev)
 {
        struct drm_crtc *crtc;
+       struct drm_modeset_acquire_ctx ctx;
        int ret = 0;
 
-       drm_modeset_lock_all(dev);
+       DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
        drm_for_each_crtc(crtc, dev)
                if (crtc->enabled) {
                        struct drm_mode_set set = {
@@ -1016,7 +1022,7 @@ int drm_helper_force_disable_all(struct drm_device *dev)
                                goto out;
                }
 out:
-       drm_modeset_unlock_all(dev);
+       DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
        return ret;
 }
 EXPORT_SYMBOL(drm_helper_force_disable_all);

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 3ab0783..6860223 100644 (file)
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -940,10 +940,11 @@ static int setcmap_legacy(struct fb_cmap *cmap, struct fb_info *info)
        struct drm_fb_helper *fb_helper = info->par;
        struct drm_mode_set *modeset;
        struct drm_crtc *crtc;
+       struct drm_modeset_acquire_ctx ctx;
        u16 *r, *g, *b;
        int ret = 0;
 
-       drm_modeset_lock_all(fb_helper->dev);
+       DRM_MODESET_LOCK_ALL_BEGIN(fb_helper->dev, ctx, 0, ret);
        drm_client_for_each_modeset(modeset, &fb_helper->client) {
                crtc = modeset->crtc;
                if (!crtc->funcs->gamma_set || !crtc->gamma_size) {
@@ -970,7 +971,7 @@ static int setcmap_legacy(struct fb_cmap *cmap, struct fb_info *info)
                        goto out;
        }
 out:
-       drm_modeset_unlock_all(fb_helper->dev);
+       DRM_MODESET_LOCK_ALL_END(fb_helper->dev, ctx, ret);
 
        return ret;
 }
@@ -1441,10 +1442,11 @@ static int pan_display_legacy(struct fb_var_screeninfo *var,
        struct drm_fb_helper *fb_helper = info->par;
        struct drm_client_dev *client = &fb_helper->client;
        struct drm_mode_set *modeset;
+       struct drm_modeset_acquire_ctx ctx;
        int ret = 0;
 
        mutex_lock(&client->modeset_mutex);
-       drm_modeset_lock_all(fb_helper->dev);
+       DRM_MODESET_LOCK_ALL_BEGIN(fb_helper->dev, ctx, 0, ret);
        drm_client_for_each_modeset(modeset, client) {
                modeset->x = var->xoffset;
                modeset->y = var->yoffset;
@@ -1457,7 +1459,7 @@ static int pan_display_legacy(struct fb_var_screeninfo *var,
                        }
                }
        }
-       drm_modeset_unlock_all(fb_helper->dev);
+       DRM_MODESET_LOCK_ALL_END(fb_helper->dev, ctx, ret);
        mutex_unlock(&client->modeset_mutex);
 
        return ret;

diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
index 07f5abc..205e9aa 100644 (file)
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -1059,8 +1059,10 @@ static void legacy_remove_fb(struct drm_framebuffer *fb)
        struct drm_device *dev = fb->dev;
        struct drm_crtc *crtc;
        struct drm_plane *plane;
+       struct drm_modeset_acquire_ctx ctx;
+       int ret;
 
-       drm_modeset_lock_all(dev);
+       DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
        /* remove from any CRTC */
        drm_for_each_crtc(crtc, dev) {
                if (crtc->primary->fb == fb) {
@@ -1082,7 +1084,7 @@ static void legacy_remove_fb(struct drm_framebuffer *fb)
                        drm_plane_force_disable(plane);
                }
        }
-       drm_modeset_unlock_all(dev);
+       DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 }
 
 /**