Move the calls to drm_fb_helper_alloc_info() from drivers into a single place in fbdev helpers. Allocates struct fb_info for a new framebuffer device. Then call drm_fb_helper_single_fb_probe() to create an fbdev screen buffer. Also release the instance on errors by calling drm_fb_helper_release_info().
Simplifies the code and fixes the error cleanup for some of the drivers. Regular release of the struct fb_info instance still happens in drm_fb_helper_fini() as before. v2: - remove error rollback in driver implementations (kernel test robot) - initialize info in TTM implementation (kernel test robot) Signed-off-by: Thomas Zimmermann <[email protected]> --- drivers/gpu/drm/armada/armada_fbdev.c | 12 +------ drivers/gpu/drm/drm_fb_helper.c | 39 +++++++--------------- drivers/gpu/drm/drm_fbdev_dma.c | 12 ++----- drivers/gpu/drm/drm_fbdev_shmem.c | 12 ++----- drivers/gpu/drm/drm_fbdev_ttm.c | 12 ++----- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 9 +---- drivers/gpu/drm/gma500/fbdev.c | 12 +------ drivers/gpu/drm/i915/display/intel_fbdev.c | 9 +---- drivers/gpu/drm/msm/msm_fbdev.c | 9 +---- drivers/gpu/drm/omapdrm/omap_fbdev.c | 9 +---- drivers/gpu/drm/radeon/radeon_fbdev.c | 13 +------- drivers/gpu/drm/tegra/fbdev.c | 9 +---- include/drm/drm_fb_helper.h | 12 ------- 13 files changed, 26 insertions(+), 143 deletions(-) diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c index 22e2081bfa04..601b2aad243b 100644 --- a/drivers/gpu/drm/armada/armada_fbdev.c +++ b/drivers/gpu/drm/armada/armada_fbdev.c @@ -43,10 +43,10 @@ int armada_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh, struct drm_fb_helper_surface_size *sizes) { struct drm_device *dev = fbh->dev; + struct fb_info *info = fbh->info; struct drm_mode_fb_cmd2 mode; struct armada_framebuffer *dfb; struct armada_gem_object *obj; - struct fb_info *info; int size, ret; void *ptr; @@ -90,12 +90,6 @@ int armada_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh, if (IS_ERR(dfb)) return PTR_ERR(dfb); - info = drm_fb_helper_alloc_info(fbh); - if (IS_ERR(info)) { - ret = PTR_ERR(info); - goto err_fballoc; - } - info->fbops = &armada_fb_ops; info->fix.smem_start = obj->phys_addr; info->fix.smem_len = obj->obj.size; @@ -111,8 +105,4 @@ int armada_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh, (unsigned long long)obj->phys_addr); return 0; - - err_fballoc: - dfb->fb.funcs->destroy(&dfb->fb); - return ret; } diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 53e9dc0543de..dd80f5c5feec 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -495,20 +495,7 @@ int drm_fb_helper_init(struct drm_device *dev, } EXPORT_SYMBOL(drm_fb_helper_init); -/** - * drm_fb_helper_alloc_info - allocate fb_info and some of its members - * @fb_helper: driver-allocated fbdev helper - * - * A helper to alloc fb_info and the member cmap. Called by the driver - * within the struct &drm_driver.fbdev_probe callback function. Drivers do - * not need to release the allocated fb_info structure themselves, this is - * automatically done when calling drm_fb_helper_fini(). - * - * RETURNS: - * fb_info pointer if things went okay, pointer containing error code - * otherwise - */ -struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper) +static struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper) { struct device *dev = fb_helper->dev->dev; struct fb_info *info; @@ -535,17 +522,8 @@ struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper) framebuffer_release(info); return ERR_PTR(ret); } -EXPORT_SYMBOL(drm_fb_helper_alloc_info); -/** - * drm_fb_helper_release_info - release fb_info and its members - * @fb_helper: driver-allocated fbdev helper - * - * A helper to release fb_info and the member cmap. Drivers do not - * need to release the allocated fb_info structure themselves, this is - * automatically done when calling drm_fb_helper_fini(). - */ -void drm_fb_helper_release_info(struct drm_fb_helper *fb_helper) +static void drm_fb_helper_release_info(struct drm_fb_helper *fb_helper) { struct fb_info *info = fb_helper->info; @@ -558,7 +536,6 @@ void drm_fb_helper_release_info(struct drm_fb_helper *fb_helper) fb_dealloc_cmap(&info->cmap); framebuffer_release(info); } -EXPORT_SYMBOL(drm_fb_helper_release_info); /** * drm_fb_helper_unregister_info - unregister fb_info framebuffer device @@ -1809,6 +1786,11 @@ __drm_fb_helper_initial_config_and_unlock(struct drm_fb_helper *fb_helper) height = dev->mode_config.max_height; drm_client_modeset_probe(&fb_helper->client, width, height); + + info = drm_fb_helper_alloc_info(fb_helper); + if (IS_ERR(info)) + return PTR_ERR(info); + ret = drm_fb_helper_single_fb_probe(fb_helper); if (ret < 0) { if (ret == -EAGAIN) { @@ -1817,13 +1799,12 @@ __drm_fb_helper_initial_config_and_unlock(struct drm_fb_helper *fb_helper) } mutex_unlock(&fb_helper->lock); - return ret; + goto err_drm_fb_helper_release_info; } drm_setup_crtcs_fb(fb_helper); fb_helper->deferred_setup = false; - info = fb_helper->info; info->var.pixclock = 0; /* Need to drop locks to avoid recursive deadlock in @@ -1846,6 +1827,10 @@ __drm_fb_helper_initial_config_and_unlock(struct drm_fb_helper *fb_helper) mutex_unlock(&kernel_fb_helper_lock); return 0; + +err_drm_fb_helper_release_info: + drm_fb_helper_release_info(fb_helper); + return ret; } /** diff --git a/drivers/gpu/drm/drm_fbdev_dma.c b/drivers/gpu/drm/drm_fbdev_dma.c index c6196293e424..442d964039b7 100644 --- a/drivers/gpu/drm/drm_fbdev_dma.c +++ b/drivers/gpu/drm/drm_fbdev_dma.c @@ -268,9 +268,9 @@ int drm_fbdev_dma_driver_fbdev_probe(struct drm_fb_helper *fb_helper, { struct drm_client_dev *client = &fb_helper->client; struct drm_device *dev = fb_helper->dev; + struct fb_info *info = fb_helper->info; struct drm_client_buffer *buffer; struct drm_framebuffer *fb; - struct fb_info *info; u32 format; struct iosys_map map; int ret; @@ -300,12 +300,6 @@ int drm_fbdev_dma_driver_fbdev_probe(struct drm_fb_helper *fb_helper, fb_helper->buffer = buffer; fb_helper->fb = fb; - info = drm_fb_helper_alloc_info(fb_helper); - if (IS_ERR(info)) { - ret = PTR_ERR(info); - goto err_drm_client_buffer_vunmap; - } - drm_fb_helper_fill_info(info, fb_helper, sizes); if (fb->funcs->dirty) @@ -313,12 +307,10 @@ int drm_fbdev_dma_driver_fbdev_probe(struct drm_fb_helper *fb_helper, else ret = drm_fbdev_dma_driver_fbdev_probe_tail(fb_helper, sizes); if (ret) - goto err_drm_fb_helper_release_info; + goto err_drm_client_buffer_vunmap; return 0; -err_drm_fb_helper_release_info: - drm_fb_helper_release_info(fb_helper); err_drm_client_buffer_vunmap: fb_helper->fb = NULL; fb_helper->buffer = NULL; diff --git a/drivers/gpu/drm/drm_fbdev_shmem.c b/drivers/gpu/drm/drm_fbdev_shmem.c index 51573058df6f..2190e2230b83 100644 --- a/drivers/gpu/drm/drm_fbdev_shmem.c +++ b/drivers/gpu/drm/drm_fbdev_shmem.c @@ -134,10 +134,10 @@ int drm_fbdev_shmem_driver_fbdev_probe(struct drm_fb_helper *fb_helper, { struct drm_client_dev *client = &fb_helper->client; struct drm_device *dev = fb_helper->dev; + struct fb_info *info = fb_helper->info; struct drm_client_buffer *buffer; struct drm_gem_shmem_object *shmem; struct drm_framebuffer *fb; - struct fb_info *info; u32 format; struct iosys_map map; int ret; @@ -167,12 +167,6 @@ int drm_fbdev_shmem_driver_fbdev_probe(struct drm_fb_helper *fb_helper, fb_helper->buffer = buffer; fb_helper->fb = fb; - info = drm_fb_helper_alloc_info(fb_helper); - if (IS_ERR(info)) { - ret = PTR_ERR(info); - goto err_drm_client_buffer_vunmap; - } - drm_fb_helper_fill_info(info, fb_helper, sizes); info->fbops = &drm_fbdev_shmem_fb_ops; @@ -193,12 +187,10 @@ int drm_fbdev_shmem_driver_fbdev_probe(struct drm_fb_helper *fb_helper, info->fbdefio = &fb_helper->fbdefio; ret = fb_deferred_io_init(info); if (ret) - goto err_drm_fb_helper_release_info; + goto err_drm_client_buffer_vunmap; return 0; -err_drm_fb_helper_release_info: - drm_fb_helper_release_info(fb_helper); err_drm_client_buffer_vunmap: fb_helper->fb = NULL; fb_helper->buffer = NULL; diff --git a/drivers/gpu/drm/drm_fbdev_ttm.c b/drivers/gpu/drm/drm_fbdev_ttm.c index ccf460fbc1f0..3a06c2b59a8d 100644 --- a/drivers/gpu/drm/drm_fbdev_ttm.c +++ b/drivers/gpu/drm/drm_fbdev_ttm.c @@ -174,8 +174,8 @@ int drm_fbdev_ttm_driver_fbdev_probe(struct drm_fb_helper *fb_helper, { struct drm_client_dev *client = &fb_helper->client; struct drm_device *dev = fb_helper->dev; + struct fb_info *info = fb_helper->info; struct drm_client_buffer *buffer; - struct fb_info *info; size_t screen_size; void *screen_buffer; u32 format; @@ -203,12 +203,6 @@ int drm_fbdev_ttm_driver_fbdev_probe(struct drm_fb_helper *fb_helper, goto err_drm_client_framebuffer_delete; } - info = drm_fb_helper_alloc_info(fb_helper); - if (IS_ERR(info)) { - ret = PTR_ERR(info); - goto err_vfree; - } - drm_fb_helper_fill_info(info, fb_helper, sizes); info->fbops = &drm_fbdev_ttm_fb_ops; @@ -225,12 +219,10 @@ int drm_fbdev_ttm_driver_fbdev_probe(struct drm_fb_helper *fb_helper, info->fbdefio = &fb_helper->fbdefio; ret = fb_deferred_io_init(info); if (ret) - goto err_drm_fb_helper_release_info; + goto err_vfree; return 0; -err_drm_fb_helper_release_info: - drm_fb_helper_release_info(fb_helper); err_vfree: vfree(screen_buffer); err_drm_client_framebuffer_delete: diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c index a3bd21a827ad..539ce0a87886 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c @@ -57,18 +57,11 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper, struct drm_fb_helper_surface_size *sizes, struct exynos_drm_gem *exynos_gem) { - struct fb_info *fbi; + struct fb_info *fbi = helper->info; struct drm_framebuffer *fb = helper->fb; unsigned int size = fb->width * fb->height * fb->format->cpp[0]; unsigned long offset; - fbi = drm_fb_helper_alloc_info(helper); - if (IS_ERR(fbi)) { - DRM_DEV_ERROR(to_dma_dev(helper->dev), - "failed to allocate fb info.\n"); - return PTR_ERR(fbi); - } - fbi->fbops = &exynos_drm_fb_ops; drm_fb_helper_fill_info(fbi, helper, sizes); diff --git a/drivers/gpu/drm/gma500/fbdev.c b/drivers/gpu/drm/gma500/fbdev.c index bc92fa24a1e2..c26926babc2a 100644 --- a/drivers/gpu/drm/gma500/fbdev.c +++ b/drivers/gpu/drm/gma500/fbdev.c @@ -108,7 +108,7 @@ int psb_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper, struct drm_device *dev = fb_helper->dev; struct drm_psb_private *dev_priv = to_drm_psb_private(dev); struct pci_dev *pdev = to_pci_dev(dev->dev); - struct fb_info *info; + struct fb_info *info = fb_helper->info; struct drm_framebuffer *fb; struct drm_mode_fb_cmd2 mode_cmd = { }; int size; @@ -167,12 +167,6 @@ int psb_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper, fb_helper->funcs = &psb_fbdev_fb_helper_funcs; fb_helper->fb = fb; - info = drm_fb_helper_alloc_info(fb_helper); - if (IS_ERR(info)) { - ret = PTR_ERR(info); - goto err_drm_framebuffer_unregister_private; - } - info->fbops = &psb_fbdev_fb_ops; /* Accessed stolen memory directly */ @@ -196,10 +190,6 @@ int psb_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper, return 0; -err_drm_framebuffer_unregister_private: - drm_framebuffer_unregister_private(fb); - drm_framebuffer_cleanup(fb); - kfree(fb); err_drm_gem_object_put: drm_gem_object_put(obj); return ret; diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index e5449c41cfa1..9cd03e2adeb2 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -267,8 +267,8 @@ int intel_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, struct intel_display *display = to_intel_display(helper->dev); struct intel_fbdev *ifbdev = to_intel_fbdev(helper); struct intel_framebuffer *fb = ifbdev->fb; + struct fb_info *info = helper->info; struct ref_tracker *wakeref; - struct fb_info *info; struct i915_vma *vma; unsigned long flags = 0; bool prealloc = false; @@ -318,13 +318,6 @@ int intel_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, goto out_unlock; } - info = drm_fb_helper_alloc_info(helper); - if (IS_ERR(info)) { - drm_err(display->drm, "Failed to allocate fb_info (%pe)\n", info); - ret = PTR_ERR(info); - goto out_unpin; - } - helper->funcs = &intel_fb_helper_funcs; helper->fb = &fb->base; diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c index aad6fb77f0de..fd19995b12b5 100644 --- a/drivers/gpu/drm/msm/msm_fbdev.c +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -91,9 +91,9 @@ int msm_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, { struct drm_device *dev = helper->dev; struct msm_drm_private *priv = dev->dev_private; + struct fb_info *fbi = helper->info; struct drm_framebuffer *fb = NULL; struct drm_gem_object *bo; - struct fb_info *fbi = NULL; uint64_t paddr; uint32_t format; int ret, pitch; @@ -126,13 +126,6 @@ int msm_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, goto fail; } - fbi = drm_fb_helper_alloc_info(helper); - if (IS_ERR(fbi)) { - DRM_DEV_ERROR(dev->dev, "failed to allocate fb info\n"); - ret = PTR_ERR(fbi); - goto fail; - } - DBG("fbi=%p, dev=%p", fbi, dev); helper->funcs = &msm_fbdev_helper_funcs; diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c index b5df2923d2a6..c4671ab87f9c 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -153,9 +153,9 @@ int omap_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, struct drm_device *dev = helper->dev; struct omap_drm_private *priv = dev->dev_private; struct omap_fbdev *fbdev = priv->fbdev; + struct fb_info *fbi = helper->info; struct drm_framebuffer *fb = NULL; union omap_gem_size gsize; - struct fb_info *fbi = NULL; struct drm_mode_fb_cmd2 mode_cmd = {0}; struct drm_gem_object *bo; dma_addr_t dma_addr; @@ -224,13 +224,6 @@ int omap_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, goto fail; } - fbi = drm_fb_helper_alloc_info(helper); - if (IS_ERR(fbi)) { - dev_err(dev->dev, "failed to allocate fb info\n"); - ret = PTR_ERR(fbi); - goto fail; - } - DBG("fbi=%p, dev=%p", fbi, dev); helper->funcs = &omap_fbdev_helper_funcs; diff --git a/drivers/gpu/drm/radeon/radeon_fbdev.c b/drivers/gpu/drm/radeon/radeon_fbdev.c index 4df6c9167bf0..1b469b2b4b04 100644 --- a/drivers/gpu/drm/radeon/radeon_fbdev.c +++ b/drivers/gpu/drm/radeon/radeon_fbdev.c @@ -204,7 +204,7 @@ int radeon_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper, struct radeon_device *rdev = fb_helper->dev->dev_private; const struct drm_format_info *format_info; struct drm_mode_fb_cmd2 mode_cmd = { }; - struct fb_info *info; + struct fb_info *info = fb_helper->info; struct drm_gem_object *gobj; struct radeon_bo *rbo; struct drm_framebuffer *fb; @@ -245,13 +245,6 @@ int radeon_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper, fb_helper->funcs = &radeon_fbdev_fb_helper_funcs; fb_helper->fb = fb; - /* okay we have an object now allocate the framebuffer */ - info = drm_fb_helper_alloc_info(fb_helper); - if (IS_ERR(info)) { - ret = PTR_ERR(info); - goto err_drm_framebuffer_unregister_private; - } - info->fbops = &radeon_fbdev_fb_ops; /* radeon resume is fragile and needs a vt switch to help it along */ @@ -277,10 +270,6 @@ int radeon_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper, return 0; -err_drm_framebuffer_unregister_private: - fb_helper->fb = NULL; - drm_framebuffer_unregister_private(fb); - drm_framebuffer_cleanup(fb); err_kfree: kfree(fb); err_radeon_fbdev_destroy_pinned_object: diff --git a/drivers/gpu/drm/tegra/fbdev.c b/drivers/gpu/drm/tegra/fbdev.c index 91aece6f34e0..8f40882aa76e 100644 --- a/drivers/gpu/drm/tegra/fbdev.c +++ b/drivers/gpu/drm/tegra/fbdev.c @@ -73,10 +73,10 @@ int tegra_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, struct tegra_drm *tegra = helper->dev->dev_private; struct drm_device *drm = helper->dev; struct drm_mode_fb_cmd2 cmd = { 0 }; + struct fb_info *info = helper->info; unsigned int bytes_per_pixel; struct drm_framebuffer *fb; unsigned long offset; - struct fb_info *info; struct tegra_bo *bo; size_t size; int err; @@ -97,13 +97,6 @@ int tegra_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper, if (IS_ERR(bo)) return PTR_ERR(bo); - info = drm_fb_helper_alloc_info(helper); - if (IS_ERR(info)) { - dev_err(drm->dev, "failed to allocate framebuffer info\n"); - drm_gem_object_put(&bo->gem); - return PTR_ERR(info); - } - fb = tegra_fb_alloc(drm, drm_get_format_info(drm, cmd.pixel_format, cmd.modifier[0]), &cmd, &bo, 1); diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index c1d38d54a112..2faf8aaf98dc 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -256,8 +256,6 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var, int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper); -struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper); -void drm_fb_helper_release_info(struct drm_fb_helper *fb_helper); void drm_fb_helper_unregister_info(struct drm_fb_helper *fb_helper); void drm_fb_helper_fill_info(struct fb_info *info, struct drm_fb_helper *fb_helper, @@ -340,16 +338,6 @@ drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper) return 0; } -static inline struct fb_info * -drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper) -{ - return NULL; -} - -static inline void drm_fb_helper_release_info(struct drm_fb_helper *fb_helper) -{ -} - static inline void drm_fb_helper_unregister_info(struct drm_fb_helper *fb_helper) { } base-commit: c03916cb446b6eefe91538599775bb54bf98238c -- 2.51.1
