change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/samples/vfio-mdev/mdpy-fb.c
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@@ -86,7 +86,7 @@
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 		iounmap(info->screen_base);
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 }
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-static struct fb_ops mdpy_fb_ops = {
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+static const struct fb_ops mdpy_fb_ops = {
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 	.owner		= THIS_MODULE,
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 	.fb_destroy	= mdpy_fb_destroy,
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 	.fb_setcolreg	= mdpy_fb_setcolreg,
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@@ -109,7 +109,7 @@
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 	ret = pci_request_regions(pdev, "mdpy-fb");
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 	if (ret < 0)
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-		return ret;
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+		goto err_disable_dev;
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 	pci_read_config_dword(pdev, MDPY_FORMAT_OFFSET, &format);
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 	pci_read_config_dword(pdev, MDPY_WIDTH_OFFSET,	&width);
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@@ -191,6 +191,9 @@
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 err_release_regions:
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 	pci_release_regions(pdev);
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+err_disable_dev:
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+	pci_disable_device(pdev);
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+
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 	return ret;
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 }
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@@ -199,7 +202,10 @@
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 	struct fb_info *info = pci_get_drvdata(pdev);
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 	unregister_framebuffer(info);
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+	iounmap(info->screen_base);
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 	framebuffer_release(info);
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+	pci_release_regions(pdev);
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+	pci_disable_device(pdev);
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 }
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 static struct pci_device_id mdpy_fb_pci_table[] = {