intel: Allow opening the device only through platform information

Only fail to open the device based on the PCI address, if and only if we
do not have sufficient platform information to find the correct system
device.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

src/intel_device.c

@@ -183,6 +183,9 @@ static int __intel_open_device(const struct pci_device *pci, char **path)
 		char id[20];
 		int ret;
 
+		if (pci == NULL)
+			return -1;
+
 		snprintf(id, sizeof(id),
 			 "pci:%04x:%02x:%02x.%d",
 			 pci->domain, pci->bus, pci->dev, pci->func);

src/intel_module.c

@@ -546,9 +546,6 @@ intel_platform_probe(DriverPtr driver,
 {
 	unsigned scrn_flags = 0;
 
-	if (!dev->pdev)
-		return FALSE;
-
 	if (intel_open_device(entity_num, dev->pdev, dev) == -1)
 		return FALSE;