Merge tag 'drm-fixes-2025-06-06' of https://gitlab.freedesktop.org/drm/kernel

Pull more drm fixes from Simona Vetter:
 "Another small batch of drm fixes, this time with a different baseline
  and hence separate.

  Drivers:
   - ivpu:
       - dma_resv locking
       - warning fixes
       - reset failure handling
       - improve logging
       - update fw file names
       - fix cmdqueue unregister
   - panel-simple: add Evervision VGG644804

  Core Changes:
   - sysfb: screen_info type check
   - video: screen_info for relocated pci fb
   - drm/sched: signal fence of killed job
   - dummycon: deferred takeover fix"

* tag 'drm-fixes-2025-06-06' of https://gitlab.freedesktop.org/drm/kernel:
  sysfb: Fix screen_info type check for VGA
  video: screen_info: Relocate framebuffers behind PCI bridges
  accel/ivpu: Fix warning in ivpu_gem_bo_free()
  accel/ivpu: Trigger device recovery on engine reset/resume failure
  accel/ivpu: Use dma_resv_lock() instead of a custom mutex
  drm/panel-simple: fix the warnings for the Evervision VGG644804
  accel/ivpu: Reorder Doorbell Unregister and Command Queue Destruction
  accel/ivpu: Use firmware names from upstream repo
  accel/ivpu: Improve buffer object logging
  dummycon: Trigger redraw when switching consoles with deferred takeover
  drm/scheduler: signal scheduled fence when kill job

drivers/accel/ivpu/ivpu_fw.c

@@ -55,18 +55,18 @@ static struct {
 	int gen;
 	const char *name;
 } fw_names[] = {
-	{ IVPU_HW_IP_37XX, "vpu_37xx.bin" },
+	{ IVPU_HW_IP_37XX, "intel/vpu/vpu_37xx_v1.bin" },
 	{ IVPU_HW_IP_37XX, "intel/vpu/vpu_37xx_v0.0.bin" },
-	{ IVPU_HW_IP_40XX, "vpu_40xx.bin" },
+	{ IVPU_HW_IP_40XX, "intel/vpu/vpu_40xx_v1.bin" },
 	{ IVPU_HW_IP_40XX, "intel/vpu/vpu_40xx_v0.0.bin" },
-	{ IVPU_HW_IP_50XX, "vpu_50xx.bin" },
+	{ IVPU_HW_IP_50XX, "intel/vpu/vpu_50xx_v1.bin" },
 	{ IVPU_HW_IP_50XX, "intel/vpu/vpu_50xx_v0.0.bin" },
 };
 
 /* Production fw_names from the table above */
-MODULE_FIRMWARE("intel/vpu/vpu_37xx_v0.0.bin");
-MODULE_FIRMWARE("intel/vpu/vpu_40xx_v0.0.bin");
-MODULE_FIRMWARE("intel/vpu/vpu_50xx_v0.0.bin");
+MODULE_FIRMWARE("intel/vpu/vpu_37xx_v1.bin");
+MODULE_FIRMWARE("intel/vpu/vpu_40xx_v1.bin");
+MODULE_FIRMWARE("intel/vpu/vpu_50xx_v1.bin");
 
 static int ivpu_fw_request(struct ivpu_device *vdev)
 {

drivers/accel/ivpu/ivpu_gem.c

@@ -28,11 +28,21 @@ static inline void ivpu_dbg_bo(struct ivpu_device *vdev, struct ivpu_bo *bo, con
 {
 	ivpu_dbg(vdev, BO,
 		 "%6s: bo %8p vpu_addr %9llx size %8zu ctx %d has_pages %d dma_mapped %d mmu_mapped %d wc %d imported %d\n",
-		 action, bo, bo->vpu_addr, ivpu_bo_size(bo), bo->ctx ? bo->ctx->id : 0,
+		 action, bo, bo->vpu_addr, ivpu_bo_size(bo), bo->ctx_id,
 		 (bool)bo->base.pages, (bool)bo->base.sgt, bo->mmu_mapped, bo->base.map_wc,
 		 (bool)drm_gem_is_imported(&bo->base.base));
 }
 
+static inline int ivpu_bo_lock(struct ivpu_bo *bo)
+{
+	return dma_resv_lock(bo->base.base.resv, NULL);
+}
+
+static inline void ivpu_bo_unlock(struct ivpu_bo *bo)
+{
+	dma_resv_unlock(bo->base.base.resv);
+}
+
 /*
  * ivpu_bo_pin() - pin the backing physical pages and map them to VPU.
  *
@@ -43,22 +53,22 @@ static inline void ivpu_dbg_bo(struct ivpu_device *vdev, struct ivpu_bo *bo, con
 int __must_check ivpu_bo_pin(struct ivpu_bo *bo)
 {
 	struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
+	struct sg_table *sgt;
 	int ret = 0;
 
-	mutex_lock(&bo->lock);
-
 	ivpu_dbg_bo(vdev, bo, "pin");
-	drm_WARN_ON(&vdev->drm, !bo->ctx);
+
+	sgt = drm_gem_shmem_get_pages_sgt(&bo->base);
+	if (IS_ERR(sgt)) {
+		ret = PTR_ERR(sgt);
+		ivpu_err(vdev, "Failed to map BO in IOMMU: %d\n", ret);
+		return ret;
+	}
+
+	ivpu_bo_lock(bo);
 
 	if (!bo->mmu_mapped) {
-		struct sg_table *sgt = drm_gem_shmem_get_pages_sgt(&bo->base);
-
-		if (IS_ERR(sgt)) {
-			ret = PTR_ERR(sgt);
-			ivpu_err(vdev, "Failed to map BO in IOMMU: %d\n", ret);
-			goto unlock;
-		}
-
+		drm_WARN_ON(&vdev->drm, !bo->ctx);
 		ret = ivpu_mmu_context_map_sgt(vdev, bo->ctx, bo->vpu_addr, sgt,
 					       ivpu_bo_is_snooped(bo));
 		if (ret) {
@@ -69,7 +79,7 @@ int __must_check ivpu_bo_pin(struct ivpu_bo *bo)
 	}
 
 unlock:
-	mutex_unlock(&bo->lock);
+	ivpu_bo_unlock(bo);
 
 	return ret;
 }
@@ -84,7 +94,7 @@ ivpu_bo_alloc_vpu_addr(struct ivpu_bo *bo, struct ivpu_mmu_context *ctx,
 	if (!drm_dev_enter(&vdev->drm, &idx))
 		return -ENODEV;
 
-	mutex_lock(&bo->lock);
+	ivpu_bo_lock(bo);
 
 	ret = ivpu_mmu_context_insert_node(ctx, range, ivpu_bo_size(bo), &bo->mm_node);
 	if (!ret) {
@@ -94,9 +104,7 @@ ivpu_bo_alloc_vpu_addr(struct ivpu_bo *bo, struct ivpu_mmu_context *ctx,
 		ivpu_err(vdev, "Failed to add BO to context %u: %d\n", ctx->id, ret);
 	}
 
-	ivpu_dbg_bo(vdev, bo, "alloc");
-
-	mutex_unlock(&bo->lock);
+	ivpu_bo_unlock(bo);
 
 	drm_dev_exit(idx);
 
@@ -107,7 +115,7 @@ static void ivpu_bo_unbind_locked(struct ivpu_bo *bo)
 {
 	struct ivpu_device *vdev = ivpu_bo_to_vdev(bo);
 
-	lockdep_assert(lockdep_is_held(&bo->lock) || !kref_read(&bo->base.base.refcount));
+	lockdep_assert(dma_resv_held(bo->base.base.resv) || !kref_read(&bo->base.base.refcount));
 
 	if (bo->mmu_mapped) {
 		drm_WARN_ON(&vdev->drm, !bo->ctx);
@@ -125,14 +133,12 @@ static void ivpu_bo_unbind_locked(struct ivpu_bo *bo)
 	if (drm_gem_is_imported(&bo->base.base))
 		return;
 
-	dma_resv_lock(bo->base.base.resv, NULL);
 	if (bo->base.sgt) {
 		dma_unmap_sgtable(vdev->drm.dev, bo->base.sgt, DMA_BIDIRECTIONAL, 0);
 		sg_free_table(bo->base.sgt);
 		kfree(bo->base.sgt);
 		bo->base.sgt = NULL;
 	}
-	dma_resv_unlock(bo->base.base.resv);
 }
 
 void ivpu_bo_unbind_all_bos_from_context(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx)
@@ -144,12 +150,12 @@ void ivpu_bo_unbind_all_bos_from_context(struct ivpu_device *vdev, struct ivpu_m
 
 	mutex_lock(&vdev->bo_list_lock);
 	list_for_each_entry(bo, &vdev->bo_list, bo_list_node) {
-		mutex_lock(&bo->lock);
+		ivpu_bo_lock(bo);
 		if (bo->ctx == ctx) {
 			ivpu_dbg_bo(vdev, bo, "unbind");
 			ivpu_bo_unbind_locked(bo);
 		}
-		mutex_unlock(&bo->lock);
+		ivpu_bo_unlock(bo);
 	}
 	mutex_unlock(&vdev->bo_list_lock);
 }
@@ -169,7 +175,6 @@ struct drm_gem_object *ivpu_gem_create_object(struct drm_device *dev, size_t siz
 	bo->base.pages_mark_dirty_on_put = true; /* VPU can dirty a BO anytime */
 
 	INIT_LIST_HEAD(&bo->bo_list_node);
-	mutex_init(&bo->lock);
 
 	return &bo->base.base;
 }
@@ -215,7 +220,7 @@ fail_detach:
 	return ERR_PTR(ret);
 }
 
-static struct ivpu_bo *ivpu_bo_alloc(struct ivpu_device *vdev, u64 size, u32 flags)
+static struct ivpu_bo *ivpu_bo_alloc(struct ivpu_device *vdev, u64 size, u32 flags, u32 ctx_id)
 {
 	struct drm_gem_shmem_object *shmem;
 	struct ivpu_bo *bo;
@@ -233,6 +238,7 @@ static struct ivpu_bo *ivpu_bo_alloc(struct ivpu_device *vdev, u64 size, u32 fla
 		return ERR_CAST(shmem);
 
 	bo = to_ivpu_bo(&shmem->base);
+	bo->ctx_id = ctx_id;
 	bo->base.map_wc = flags & DRM_IVPU_BO_WC;
 	bo->flags = flags;
 
@@ -240,6 +246,8 @@ static struct ivpu_bo *ivpu_bo_alloc(struct ivpu_device *vdev, u64 size, u32 fla
 	list_add_tail(&bo->bo_list_node, &vdev->bo_list);
 	mutex_unlock(&vdev->bo_list_lock);
 
+	ivpu_dbg_bo(vdev, bo, "alloc");
+
 	return bo;
 }
 
@@ -277,10 +285,14 @@ static void ivpu_gem_bo_free(struct drm_gem_object *obj)
 	list_del(&bo->bo_list_node);
 	mutex_unlock(&vdev->bo_list_lock);
 
-	drm_WARN_ON(&vdev->drm, !dma_resv_test_signaled(obj->resv, DMA_RESV_USAGE_READ));
+	drm_WARN_ON(&vdev->drm, !drm_gem_is_imported(&bo->base.base) &&
+		    !dma_resv_test_signaled(obj->resv, DMA_RESV_USAGE_READ));
+	drm_WARN_ON(&vdev->drm, ivpu_bo_size(bo) == 0);
+	drm_WARN_ON(&vdev->drm, bo->base.vaddr);
 
 	ivpu_bo_unbind_locked(bo);
-	mutex_destroy(&bo->lock);
+	drm_WARN_ON(&vdev->drm, bo->mmu_mapped);
+	drm_WARN_ON(&vdev->drm, bo->ctx);
 
 	drm_WARN_ON(obj->dev, refcount_read(&bo->base.pages_use_count) > 1);
 	drm_gem_shmem_free(&bo->base);
@@ -314,7 +326,7 @@ int ivpu_bo_create_ioctl(struct drm_device *dev, void *data, struct drm_file *fi
 	if (size == 0)
 		return -EINVAL;
 
-	bo = ivpu_bo_alloc(vdev, size, args->flags);
+	bo = ivpu_bo_alloc(vdev, size, args->flags, file_priv->ctx.id);
 	if (IS_ERR(bo)) {
 		ivpu_err(vdev, "Failed to allocate BO: %pe (ctx %u size %llu flags 0x%x)",
 			 bo, file_priv->ctx.id, args->size, args->flags);
@@ -322,7 +334,10 @@ int ivpu_bo_create_ioctl(struct drm_device *dev, void *data, struct drm_file *fi
 	}
 
 	ret = drm_gem_handle_create(file, &bo->base.base, &args->handle);
-	if (!ret)
+	if (ret)
+		ivpu_err(vdev, "Failed to create handle for BO: %pe (ctx %u size %llu flags 0x%x)",
+			 bo, file_priv->ctx.id, args->size, args->flags);
+	else
 		args->vpu_addr = bo->vpu_addr;
 
 	drm_gem_object_put(&bo->base.base);
@@ -345,7 +360,7 @@ ivpu_bo_create(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx,
 	drm_WARN_ON(&vdev->drm, !PAGE_ALIGNED(range->end));
 	drm_WARN_ON(&vdev->drm, !PAGE_ALIGNED(size));
 
-	bo = ivpu_bo_alloc(vdev, size, flags);
+	bo = ivpu_bo_alloc(vdev, size, flags, IVPU_GLOBAL_CONTEXT_MMU_SSID);
 	if (IS_ERR(bo)) {
 		ivpu_err(vdev, "Failed to allocate BO: %pe (vpu_addr 0x%llx size %llu flags 0x%x)",
 			 bo, range->start, size, flags);
@@ -361,9 +376,9 @@ ivpu_bo_create(struct ivpu_device *vdev, struct ivpu_mmu_context *ctx,
 		goto err_put;
 
 	if (flags & DRM_IVPU_BO_MAPPABLE) {
-		dma_resv_lock(bo->base.base.resv, NULL);
+		ivpu_bo_lock(bo);
 		ret = drm_gem_shmem_vmap_locked(&bo->base, &map);
-		dma_resv_unlock(bo->base.base.resv);
+		ivpu_bo_unlock(bo);
 
 		if (ret)
 			goto err_put;
@@ -386,9 +401,9 @@ void ivpu_bo_free(struct ivpu_bo *bo)
 	struct iosys_map map = IOSYS_MAP_INIT_VADDR(bo->base.vaddr);
 
 	if (bo->flags & DRM_IVPU_BO_MAPPABLE) {
-		dma_resv_lock(bo->base.base.resv, NULL);
+		ivpu_bo_lock(bo);
 		drm_gem_shmem_vunmap_locked(&bo->base, &map);
-		dma_resv_unlock(bo->base.base.resv);
+		ivpu_bo_unlock(bo);
 	}
 
 	drm_gem_object_put(&bo->base.base);
@@ -407,12 +422,12 @@ int ivpu_bo_info_ioctl(struct drm_device *dev, void *data, struct drm_file *file
 
 	bo = to_ivpu_bo(obj);
 
-	mutex_lock(&bo->lock);
+	ivpu_bo_lock(bo);
 	args->flags = bo->flags;
 	args->mmap_offset = drm_vma_node_offset_addr(&obj->vma_node);
 	args->vpu_addr = bo->vpu_addr;
 	args->size = obj->size;
-	mutex_unlock(&bo->lock);
+	ivpu_bo_unlock(bo);
 
 	drm_gem_object_put(obj);
 	return ret;
@@ -449,10 +464,10 @@ int ivpu_bo_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file
 
 static void ivpu_bo_print_info(struct ivpu_bo *bo, struct drm_printer *p)
 {
-	mutex_lock(&bo->lock);
+	ivpu_bo_lock(bo);
 
 	drm_printf(p, "%-9p %-3u 0x%-12llx %-10lu 0x%-8x %-4u",
-		   bo, bo->ctx ? bo->ctx->id : 0, bo->vpu_addr, bo->base.base.size,
+		   bo, bo->ctx_id, bo->vpu_addr, bo->base.base.size,
 		   bo->flags, kref_read(&bo->base.base.refcount));
 
 	if (bo->base.pages)
@@ -466,7 +481,7 @@ static void ivpu_bo_print_info(struct ivpu_bo *bo, struct drm_printer *p)
 
 	drm_printf(p, "\n");
 
-	mutex_unlock(&bo->lock);
+	ivpu_bo_unlock(bo);
 }
 
 void ivpu_bo_list(struct drm_device *dev, struct drm_printer *p)

drivers/accel/ivpu/ivpu_gem.h

@@ -17,10 +17,10 @@ struct ivpu_bo {
 	struct list_head bo_list_node;
 	struct drm_mm_node mm_node;
 
-	struct mutex lock; /* Protects: ctx, mmu_mapped, vpu_addr */
 	u64 vpu_addr;
 	u32 flags;
 	u32 job_status; /* Valid only for command buffer */
+	u32 ctx_id;
 	bool mmu_mapped;
 };
 

drivers/accel/ivpu/ivpu_job.c

@@ -247,6 +247,10 @@ static int ivpu_cmdq_unregister(struct ivpu_file_priv *file_priv, struct ivpu_cm
 	if (!cmdq->db_id)
 		return 0;
 
+	ret = ivpu_jsm_unregister_db(vdev, cmdq->db_id);
+	if (!ret)
+		ivpu_dbg(vdev, JOB, "DB %d unregistered\n", cmdq->db_id);
+
 	if (vdev->fw->sched_mode == VPU_SCHEDULING_MODE_HW) {
 		ret = ivpu_jsm_hws_destroy_cmdq(vdev, file_priv->ctx.id, cmdq->id);
 		if (!ret)
@@ -254,10 +258,6 @@ static int ivpu_cmdq_unregister(struct ivpu_file_priv *file_priv, struct ivpu_cm
 				 cmdq->id, file_priv->ctx.id);
 	}
 
-	ret = ivpu_jsm_unregister_db(vdev, cmdq->db_id);
-	if (!ret)
-		ivpu_dbg(vdev, JOB, "DB %d unregistered\n", cmdq->db_id);
-
 	xa_erase(&file_priv->vdev->db_xa, cmdq->db_id);
 	cmdq->db_id = 0;
 
@@ -986,7 +986,8 @@ void ivpu_context_abort_work_fn(struct work_struct *work)
 		return;
 
 	if (vdev->fw->sched_mode == VPU_SCHEDULING_MODE_HW)
-		ivpu_jsm_reset_engine(vdev, 0);
+		if (ivpu_jsm_reset_engine(vdev, 0))
+			return;
 
 	mutex_lock(&vdev->context_list_lock);
 	xa_for_each(&vdev->context_xa, ctx_id, file_priv) {
@@ -1009,7 +1010,8 @@ void ivpu_context_abort_work_fn(struct work_struct *work)
 	if (vdev->fw->sched_mode != VPU_SCHEDULING_MODE_HW)
 		goto runtime_put;
 
-	ivpu_jsm_hws_resume_engine(vdev, 0);
+	if (ivpu_jsm_hws_resume_engine(vdev, 0))
+		return;
 	/*
 	 * In hardware scheduling mode NPU already has stopped processing jobs
 	 * and won't send us any further notifications, thus we have to free job related resources

drivers/accel/ivpu/ivpu_jsm_msg.c

@@ -7,6 +7,7 @@
 #include "ivpu_hw.h"
 #include "ivpu_ipc.h"
 #include "ivpu_jsm_msg.h"
+#include "ivpu_pm.h"
 #include "vpu_jsm_api.h"
 
 const char *ivpu_jsm_msg_type_to_str(enum vpu_ipc_msg_type type)
@@ -163,8 +164,10 @@ int ivpu_jsm_reset_engine(struct ivpu_device *vdev, u32 engine)
 
 	ret = ivpu_ipc_send_receive(vdev, &req, VPU_JSM_MSG_ENGINE_RESET_DONE, &resp,
 				    VPU_IPC_CHAN_ASYNC_CMD, vdev->timeout.jsm);
-	if (ret)
+	if (ret) {
 		ivpu_err_ratelimited(vdev, "Failed to reset engine %d: %d\n", engine, ret);
+		ivpu_pm_trigger_recovery(vdev, "Engine reset failed");
+	}
 
 	return ret;
 }
@@ -354,8 +357,10 @@ int ivpu_jsm_hws_resume_engine(struct ivpu_device *vdev, u32 engine)
 
 	ret = ivpu_ipc_send_receive(vdev, &req, VPU_JSM_MSG_HWS_RESUME_ENGINE_DONE, &resp,
 				    VPU_IPC_CHAN_ASYNC_CMD, vdev->timeout.jsm);
-	if (ret)
+	if (ret) {
 		ivpu_err_ratelimited(vdev, "Failed to resume engine %d: %d\n", engine, ret);
+		ivpu_pm_trigger_recovery(vdev, "Engine resume failed");
+	}
 
 	return ret;
 }

drivers/firmware/sysfb.c

@@ -143,6 +143,7 @@ static __init int sysfb_init(void)
 {
 	struct screen_info *si = &screen_info;
 	struct device *parent;
+	unsigned int type;
 	struct simplefb_platform_data mode;
 	const char *name;
 	bool compatible;
@@ -170,17 +171,26 @@ static __init int sysfb_init(void)
 			goto put_device;
 	}
 
+	type = screen_info_video_type(si);
+
 	/* if the FB is incompatible, create a legacy framebuffer device */
-	if (si->orig_video_isVGA == VIDEO_TYPE_EFI)
-		name = "efi-framebuffer";
-	else if (si->orig_video_isVGA == VIDEO_TYPE_VLFB)
-		name = "vesa-framebuffer";
-	else if (si->orig_video_isVGA == VIDEO_TYPE_VGAC)
-		name = "vga-framebuffer";
-	else if (si->orig_video_isVGA == VIDEO_TYPE_EGAC)
+	switch (type) {
+	case VIDEO_TYPE_EGAC:
 		name = "ega-framebuffer";
-	else
+		break;
+	case VIDEO_TYPE_VGAC:
+		name = "vga-framebuffer";
+		break;
+	case VIDEO_TYPE_VLFB:
+		name = "vesa-framebuffer";
+		break;
+	case VIDEO_TYPE_EFI:
+		name = "efi-framebuffer";
+		break;
+	default:
 		name = "platform-framebuffer";
+		break;
+	}
 
 	pd = platform_device_alloc(name, 0);
 	if (!pd) {

drivers/gpu/drm/panel/panel-simple.c

@@ -2198,13 +2198,14 @@ static const struct display_timing evervision_vgg644804_timing = {
 static const struct panel_desc evervision_vgg644804 = {
 	.timings = &evervision_vgg644804_timing,
 	.num_timings = 1,
-	.bpc = 8,
+	.bpc = 6,
 	.size = {
 		.width = 115,
 		.height = 86,
 	},
 	.bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
-	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };
 
 static const struct display_timing evervision_vgg804821_timing = {

drivers/gpu/drm/scheduler/sched_entity.c

@@ -176,6 +176,7 @@ static void drm_sched_entity_kill_jobs_work(struct work_struct *wrk)
 {
 	struct drm_sched_job *job = container_of(wrk, typeof(*job), work);
 
+	drm_sched_fence_scheduled(job->s_fence, NULL);
 	drm_sched_fence_finished(job->s_fence, -ESRCH);
 	WARN_ON(job->s_fence->parent);
 	job->sched->ops->free_job(job);

drivers/video/console/dummycon.c

@@ -85,6 +85,15 @@ static bool dummycon_blank(struct vc_data *vc, enum vesa_blank_mode blank,
 	/* Redraw, so that we get putc(s) for output done while blanked */
 	return true;
 }
+
+static bool dummycon_switch(struct vc_data *vc)
+{
+	/*
+	 * Redraw, so that we get putc(s) for output done while switched
+	 * away. Informs deferred consoles to take over the display.
+	 */
+	return true;
+}
 #else
 static void dummycon_putc(struct vc_data *vc, u16 c, unsigned int y,
 			  unsigned int x) { }
@@ -95,6 +104,10 @@ static bool dummycon_blank(struct vc_data *vc, enum vesa_blank_mode blank,
 {
 	return false;
 }
+static bool dummycon_switch(struct vc_data *vc)
+{
+	return false;
+}
 #endif
 
 static const char *dummycon_startup(void)
@@ -124,11 +137,6 @@ static bool dummycon_scroll(struct vc_data *vc, unsigned int top,
 	return false;
 }
 
-static bool dummycon_switch(struct vc_data *vc)
-{
-	return false;
-}
-
 /*
  *  The console `switch' structure for the dummy console
  *

drivers/video/screen_info_pci.c

@@ -7,8 +7,8 @@
 
 static struct pci_dev *screen_info_lfb_pdev;
 static size_t screen_info_lfb_bar;
-static resource_size_t screen_info_lfb_offset;
-static struct resource screen_info_lfb_res = DEFINE_RES_MEM(0, 0);
+static resource_size_t screen_info_lfb_res_start; // original start of resource
+static resource_size_t screen_info_lfb_offset; // framebuffer offset within resource
 
 static bool __screen_info_relocation_is_valid(const struct screen_info *si, struct resource *pr)
 {
@@ -31,7 +31,7 @@ void screen_info_apply_fixups(void)
 	if (screen_info_lfb_pdev) {
 		struct resource *pr = &screen_info_lfb_pdev->resource[screen_info_lfb_bar];
 
-		if (pr->start != screen_info_lfb_res.start) {
+		if (pr->start != screen_info_lfb_res_start) {
 			if (__screen_info_relocation_is_valid(si, pr)) {
 				/*
 				 * Only update base if we have an actual
@@ -47,46 +47,67 @@ void screen_info_apply_fixups(void)
 	}
 }
 
+static int __screen_info_lfb_pci_bus_region(const struct screen_info *si, unsigned int type,
+					    struct pci_bus_region *r)
+{
+	u64 base, size;
+
+	base = __screen_info_lfb_base(si);
+	if (!base)
+		return -EINVAL;
+
+	size = __screen_info_lfb_size(si, type);
+	if (!size)
+		return -EINVAL;
+
+	r->start = base;
+	r->end = base + size - 1;
+
+	return 0;
+}
+
 static void screen_info_fixup_lfb(struct pci_dev *pdev)
 {
 	unsigned int type;
-	struct resource res[SCREEN_INFO_MAX_RESOURCES];
-	size_t i, numres;
+	struct pci_bus_region bus_region;
 	int ret;
+	struct resource r = {
+		.flags = IORESOURCE_MEM,
+	};
+	const struct resource *pr;
 	const struct screen_info *si = &screen_info;
 
 	if (screen_info_lfb_pdev)
 		return; // already found
 
 	type = screen_info_video_type(si);
-	if (type != VIDEO_TYPE_EFI)
-		return; // only applies to EFI
+	if (!__screen_info_has_lfb(type))
+		return; // only applies to EFI; maybe VESA
 
-	ret = screen_info_resources(si, res, ARRAY_SIZE(res));
+	ret = __screen_info_lfb_pci_bus_region(si, type, &bus_region);
 	if (ret < 0)
 		return;
-	numres = ret;
 
-	for (i = 0; i < numres; ++i) {
-		struct resource *r = &res[i];
-		const struct resource *pr;
+	/*
+	 * Translate the PCI bus address to resource. Account
+	 * for an offset if the framebuffer is behind a PCI host
+	 * bridge.
+	 */
+	pcibios_bus_to_resource(pdev->bus, &r, &bus_region);
 
-		if (!(r->flags & IORESOURCE_MEM))
-			continue;
-		pr = pci_find_resource(pdev, r);
-		if (!pr)
-			continue;
+	pr = pci_find_resource(pdev, &r);
+	if (!pr)
+		return;
 
-		/*
-		 * We've found a PCI device with the framebuffer
-		 * resource. Store away the parameters to track
-		 * relocation of the framebuffer aperture.
-		 */
-		screen_info_lfb_pdev = pdev;
-		screen_info_lfb_bar = pr - pdev->resource;
-		screen_info_lfb_offset = r->start - pr->start;
-		memcpy(&screen_info_lfb_res, r, sizeof(screen_info_lfb_res));
-	}
+	/*
+	 * We've found a PCI device with the framebuffer
+	 * resource. Store away the parameters to track
+	 * relocation of the framebuffer aperture.
+	 */
+	screen_info_lfb_pdev = pdev;
+	screen_info_lfb_bar = pr - pdev->resource;
+	screen_info_lfb_offset = r.start - pr->start;
+	screen_info_lfb_res_start = bus_region.start;
 }
 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY, 16,
 			       screen_info_fixup_lfb);