Pull 5571 into release branch
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b7639dafb4
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@ -812,7 +812,7 @@ acpi_video_device_write_brightness(struct file *file,
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ACPI_FUNCTION_TRACE("acpi_video_device_write_brightness");
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if (!dev || count + 1 > sizeof str)
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if (!dev || !dev->brightness || count + 1 > sizeof str)
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return_VALUE(-EINVAL);
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if (copy_from_user(str, buffer, count))
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