drm/ast: Remove existing framebuffers before loading driver

[sfrench/cifs-2.6.git] / drivers / gpu / drm / ast / ast_drv.c

diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c
index 69dab82a37714853b5dfdb74dbe479f7d6c10fb1..bf589c53b908d66789679df6f4098c883150fa87 100644 (file)
--- a/drivers/gpu/drm/ast/ast_drv.c
+++ b/drivers/gpu/drm/ast/ast_drv.c
@@ -60,8 +60,29 @@ static const struct pci_device_id pciidlist[] = {
 
 MODULE_DEVICE_TABLE(pci, pciidlist);
 
+static void ast_kick_out_firmware_fb(struct pci_dev *pdev)
+{
+       struct apertures_struct *ap;
+       bool primary = false;
+
+       ap = alloc_apertures(1);
+       if (!ap)
+               return;
+
+       ap->ranges[0].base = pci_resource_start(pdev, 0);
+       ap->ranges[0].size = pci_resource_len(pdev, 0);
+
+#ifdef CONFIG_X86
+       primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
+#endif
+       drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary);
+       kfree(ap);
+}
+
 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
+       ast_kick_out_firmware_fb(pdev);
+
        return drm_get_pci_dev(pdev, ent, &driver);
 }