fbdev: kyro: Use devm_ioremap_wc() for screen mem

Replace the manual pci_ioremap_wc() call for mapping screen memory with the
device-managed devm_ioremap_wc() variant.

This simplifies the driver's resource management by ensuring the memory is
automatically unmapped when the driver detaches from the device.

Signed-off-by: Giovanni Di Santi <giovanni.disanti.lkl@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>

Author: Giovanni Di Santi

drivers/video/fbdev/kyro/fbdev.c

@@ -706,7 +706,8 @@ static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (!currentpar->regbase)
 		goto out_free_fb;
 
-	info->screen_base = pci_ioremap_wc_bar(pdev, 0);
+	info->screen_base = devm_ioremap_wc(&pdev->dev, kyro_fix.smem_start,
+					    kyro_fix.smem_len);
 	if (!info->screen_base)
 		goto out_free_fb;
 
@@ -743,7 +744,7 @@ static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	fb_memset_io(info->screen_base, 0, size);
 
 	if (register_framebuffer(info) < 0)
-		goto out_unmap;
+		goto out_free_fb;
 
 	fb_info(info, "%s frame buffer device, at %dx%d@%d using %ldk/%ldk of VRAM\n",
 		info->fix.id,
@@ -754,8 +755,6 @@ static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	return 0;
 
-out_unmap:
-	iounmap(info->screen_base);
 out_free_fb:
 	framebuffer_release(info);
 
@@ -777,8 +776,6 @@ static void kyrofb_remove(struct pci_dev *pdev)
 	deviceInfo.ulNextFreeVidMem = 0;
 	deviceInfo.ulOverlayOffset = 0;
 
-	iounmap(info->screen_base);
-
 	arch_phys_wc_del(par->wc_cookie);
 
 	unregister_framebuffer(info);