[PATCH] fbdev: Pass struct device to class_simple_device_add

Swsusp turns off the display when a power-management-enabled framebuffer
driver is used.  According to Nigel Cunningham <ncunningham@linuxmail.org>,
the fix may involve the following:

"...I thought the best approach would be to use device classes to find the
struct dev for the frame buffer driver, and then use the same code I use for
storage devices to avoid suspending the frame buffer until later..."

Changes:

- pass info->device to class_simple_device_add()
- add struct device *device to struct fb_info
- store struct device in framebuffer_alloc()
- for drivers not using framebuffer_alloc(), store the struct during
  initalization
- port i810fb and rivafb to use framebuffer_alloc()
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/video/aty/atyfb_base.c

@@ -1974,7 +1974,7 @@ int __init atyfb_do_init(void)
 
 			info->fix = atyfb_fix;
 			info->par = default_par;
-
+			info->device = &pdev->dev;
 #ifdef __sparc__
 			/*
 			 * Map memory-mapped registers.

drivers/video/chipsfb.c

@@ -416,7 +416,7 @@ chipsfb_pci_init(struct pci_dev *dp, const struct pci_device_id *ent)
 		release_mem_region(addr, size);
 		return -ENOMEM;
 	}
-
+	p->device = &dp->dev;
 	init_chips(p, addr);
 
 #ifdef CONFIG_PMAC_PBOOK

drivers/video/cyber2000fb.c

@@ -1399,6 +1399,8 @@ static int __devinit cyberpro_common_probe(struct cfb_info *cfb)
 		cfb->fb.var.xres, cfb->fb.var.yres,
 		h_sync / 1000, h_sync % 1000, v_sync);
 
+	if (cfb->dev)
+		cfb->fb.device = &cfb->dev->dev;
 	err = register_framebuffer(&cfb->fb);
 
 failed:

drivers/video/fbmem.c

@@ -1141,7 +1141,8 @@ register_framebuffer(struct fb_info *fb_info)
 			break;
 	fb_info->node = i;
 
-	c = class_simple_device_add(fb_class, MKDEV(FB_MAJOR, i), NULL, "fb%d", i);
+	c = class_simple_device_add(fb_class, MKDEV(FB_MAJOR, i),
+				    fb_info->device, "fb%d", i);
 	if (IS_ERR(c)) {
 		/* Not fatal */
 		printk(KERN_WARNING "Unable to create class_device for framebuffer %d; errno = %ld\n", i, PTR_ERR(c));

drivers/video/fbsysfs.c

@@ -51,6 +51,8 @@ struct fb_info *framebuffer_alloc(size_t size, struct device *dev)
 	if (size)
 		info->par = p + fb_info_size;
 
+	info->device = dev;
+
 	return info;
 #undef PADDING
 #undef BYTES_PER_LONG

drivers/video/i810/i810_main.c

@@ -1855,20 +1855,13 @@ static int __devinit i810fb_init_pci (struct pci_dev *dev,
 	int i, err = -1, vfreq, hfreq, pixclock;
 
 	i = 0;
-	if (!(info = kmalloc(sizeof(struct fb_info), GFP_KERNEL))) {
-		i810fb_release_resource(info, par);
-		return -ENOMEM;
-	}
-	memset(info, 0, sizeof(struct fb_info));
 
-	if(!(par = kmalloc(sizeof(struct i810fb_par), GFP_KERNEL))) {
-		i810fb_release_resource(info, par);
+	info = framebuffer_alloc(sizeof(struct i810fb_par), &dev->dev);
+	if (!info)
 		return -ENOMEM;
-	}
-	memset(par, 0, sizeof(struct i810fb_par));
 
+	par = (struct i810fb_par *) info->par;
 	par->dev = dev;
-	info->par = par;
 
 	if (!(info->pixmap.addr = kmalloc(64*1024, GFP_KERNEL))) {
 		i810fb_release_resource(info, par);
@@ -1941,7 +1934,6 @@ static int __devinit i810fb_init_pci (struct pci_dev *dev,
 static void i810fb_release_resource(struct fb_info *info, 
 				    struct i810fb_par *par)
 {
-	if (par) {
 	unset_mtrr(par);
 	if (par->drm_agp) {
 		drm_agp_t *agp = par->drm_agp;
@@ -1970,9 +1962,8 @@ static void i810fb_release_resource(struct fb_info *info,
 	if (par->res_flags & PCI_DEVICE_ENABLED)
 		pci_disable_device(par->dev);
 
-		kfree(par);
-	}
-	kfree(info);
+	framebuffer_release(info);
+
 }
 
 static void __exit i810fb_remove_pci(struct pci_dev *dev)

drivers/video/igafb.c

@@ -531,6 +531,7 @@ int __init igafb_init(void)
 	info->var = default_var;
 	info->fix = igafb_fix;
 	info->pseudo_palette = (void *)(par + 1);
+	info->device = &pdev->dev;
 
 	if (!iga_init(info, par)) {
 		iounmap((void *)par->io_base);

drivers/video/imsttfb.c

@@ -1524,6 +1524,7 @@ imsttfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	par->cmap_regs = (__u8 *)ioremap(addr + 0x840000, 0x1000);
 	info->par = par;
 	info->pseudo_palette = (void *) (par + 1);
+	info->device = &pdev->dev;
 	init_imstt(info);
 
 	pci_set_drvdata(pdev, info);

drivers/video/kyro/fbdev.c

@@ -735,6 +735,7 @@ static int __devinit kyrofb_probe(struct pci_dev *pdev,
 
 	fb_memset(info->screen_base, 0, size);
 
+	info->device = &pdev->dev;
 	if (register_framebuffer(info) < 0)
 		goto out_unmap;
 

drivers/video/matrox/matroxfb_base.c

@@ -1864,6 +1864,7 @@ static int initMatrox2(WPMINFO struct board* b){
 /* We do not have to set currcon to 0... register_framebuffer do it for us on first console
  * and we do not want currcon == 0 for subsequent framebuffers */
 
+	ACCESS_FBINFO(fbcon).device = &ACCESS_FBINFO(pcidev)->dev;
 	if (register_framebuffer(&ACCESS_FBINFO(fbcon)) < 0) {
 		goto failVideoIO;
 	}

drivers/video/pvr2fb.c

@@ -939,6 +939,7 @@ static int __devinit pvr2fb_pci_probe(struct pci_dev *pdev,
 
 	pvr2_fix.mmio_start	= pci_resource_start(pdev, 1);
 	pvr2_fix.mmio_len	= pci_resource_len(pdev, 1);
+	fbinfo->device = &pdev->dev;
 
 	return pvr2fb_common_init();
 }

drivers/video/radeonfb.c

@@ -3040,7 +3040,7 @@ static int radeonfb_pci_register (struct pci_dev *pdev,
 	pci_set_drvdata(pdev, rinfo);
 	rinfo->next = board_list;
 	board_list = rinfo;
-
+	((struct fb_info *) rinfo)->device = &pdev->dev;
 	if (register_framebuffer ((struct fb_info *) rinfo) < 0) {
 		printk ("radeonfb: could not register framebuffer\n");
 		iounmap(rinfo->fb_base);

drivers/video/riva/fbdev.c

@@ -1858,21 +1858,17 @@ static int __devinit rivafb_probe(struct pci_dev *pd,
 	NVTRACE_ENTER();
 	assert(pd != NULL);
 
-	info = kmalloc(sizeof(struct fb_info), GFP_KERNEL);
+	info = framebuffer_alloc(sizeof(struct riva_par), &pd->dev);
+
 	if (!info)
 		goto err_out;
 
-	default_par = kmalloc(sizeof(struct riva_par), GFP_KERNEL);
-	if (!default_par)
-		goto err_out_kfree;
-
-	memset(info, 0, sizeof(struct fb_info));
-	memset(default_par, 0, sizeof(struct riva_par));
+	default_par = (struct riva_par *) info->par;
 	default_par->pdev = pd;
 
 	info->pixmap.addr = kmalloc(64 * 1024, GFP_KERNEL);
 	if (info->pixmap.addr == NULL)
-		goto err_out_kfree1;
+		goto err_out_kfree;
 	memset(info->pixmap.addr, 0, 64 * 1024);
 
 	if (pci_enable_device(pd)) {
@@ -1896,7 +1892,7 @@ static int __devinit rivafb_probe(struct pci_dev *pd,
 
 	if(default_par->riva.Architecture == 0) {
 		printk(KERN_ERR PFX "unknown NV_ARCH\n");
-		goto err_out_kfree1;
+		goto err_out_free_base0;
 	}
 	if(default_par->riva.Architecture == NV_ARCH_10 ||
 	   default_par->riva.Architecture == NV_ARCH_20 ||
@@ -2001,7 +1997,6 @@ static int __devinit rivafb_probe(struct pci_dev *pd,
 	fb_destroy_modedb(info->monspecs.modedb);
 	info->monspecs.modedb_len = 0;
 	info->monspecs.modedb = NULL;
-
 	if (register_framebuffer(info) < 0) {
 		printk(KERN_ERR PFX
 			"error registering riva framebuffer\n");
@@ -2040,10 +2035,8 @@ static int __devinit rivafb_probe(struct pci_dev *pd,
 	pci_disable_device(pd);
 err_out_enable:
 	kfree(info->pixmap.addr);
-err_out_kfree1:
-	kfree(default_par);
 err_out_kfree:
-	kfree(info);
+	framebuffer_release(info);
 err_out:
 	return -ENODEV;
 }
@@ -2077,8 +2070,7 @@ static void __exit rivafb_remove(struct pci_dev *pd)
 	pci_release_regions(pd);
 	pci_disable_device(pd);
 	kfree(info->pixmap.addr);
-	kfree(par);
-	kfree(info);
+	framebuffer_release(info);
 	pci_set_drvdata(pd, NULL);
 	NVTRACE_LEAVE();
 }

drivers/video/sstfb.c

@@ -1507,6 +1507,7 @@ static int __devinit sstfb_probe(struct pci_dev *pdev,
 	fb_alloc_cmap(&info->cmap, 256, 0);
 
 	/* register fb */
+	info->device = &pdev->dev;
 	if (register_framebuffer(info) < 0) {
 		eprintk("can't register framebuffer.\n");
 		goto fail;

drivers/video/tgafb.c

@@ -1454,6 +1454,7 @@ tgafb_pci_register(struct pci_dev *pdev, const struct pci_device_id *ent)
 	tgafb_set_par(&all->info);
 	tgafb_init_fix(&all->info);
 
+	all->info.device = &pdev->dev;
 	if (register_framebuffer(&all->info) < 0) {
 		printk(KERN_ERR "tgafb: Could not register framebuffer\n");
 		ret = -EINVAL;

drivers/video/tridentfb.c

@@ -1164,6 +1164,7 @@ static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_de
 		default_var.accel_flags &= ~FB_ACCELF_TEXT;
 	default_var.activate |= FB_ACTIVATE_NOW;
 	fb_info.var = default_var;
+	fb_info.device = &dev->dev;
 	if (register_framebuffer(&fb_info) < 0) {
 		output("Could not register Trident framebuffer\n");
 		return -EINVAL;

include/linux/fb.h

@@ -601,6 +601,7 @@ struct fb_info {
 	struct fb_cmap cmap;		/* Current cmap */
 	struct list_head modelist;      /* mode list */
 	struct fb_ops *fbops;
+	struct device *device;
 	char __iomem *screen_base;	/* Virtual address */
 	unsigned long screen_size;	/* Amount of ioremapped VRAM or 0 */ 
 	int currcon;			/* Current VC. */