nb/intel: Replace bad uses of `find_resource`

The `find_resource` function will never return null (will die instead).
In cases where the existing code already accounts for null pointers, it
is better to use `probe_resource` instead, which returns a null pointer
instead of dying.

Change-Id: I617fea8a09049e9a87130640835ea6c3e2faec60
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58906
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>

src/northbridge/intel/gm45/gma.c

@@ -151,7 +151,7 @@ static void gma_func0_init(struct device *dev)
 
 	intel_gma_init_igd_opregion();
 
-	gtt_res = find_resource(dev, PCI_BASE_ADDRESS_0);
+	gtt_res = probe_resource(dev, PCI_BASE_ADDRESS_0);
 	if (gtt_res == NULL)
 		return;
 	mmio = res2mmio(gtt_res, 0, 0);

src/northbridge/intel/haswell/gma.c

@@ -178,7 +178,7 @@ static void gma_pm_init_pre_vbios(struct device *dev)
 {
 	printk(BIOS_DEBUG, "GT Power Management Init\n");
 
-	gtt_res = find_resource(dev, PCI_BASE_ADDRESS_0);
+	gtt_res = probe_resource(dev, PCI_BASE_ADDRESS_0);
 	if (!gtt_res || !gtt_res->base)
 		return;
 

src/northbridge/intel/haswell/minihd.c

@@ -51,7 +51,7 @@ static void minihd_init(struct device *dev)
 	int codec_mask, i;
 
 	/* Find base address */
-	res = find_resource(dev, PCI_BASE_ADDRESS_0);
+	res = probe_resource(dev, PCI_BASE_ADDRESS_0);
 	if (!res)
 		return;
 

src/northbridge/intel/ironlake/gma.c

@@ -140,7 +140,7 @@ static void gma_func0_init(struct device *dev)
 	if (!CONFIG(NO_GFX_INIT))
 		pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER);
 
-	gtt_res = find_resource(dev, PCI_BASE_ADDRESS_0);
+	gtt_res = probe_resource(dev, PCI_BASE_ADDRESS_0);
 	if (!gtt_res || !gtt_res->base)
 		return;
 
@@ -171,7 +171,7 @@ static void gma_read_resources(struct device *dev)
 	struct resource *res;
 
 	/* Set the graphics memory to write combining. */
-	res = find_resource(dev, PCI_BASE_ADDRESS_2);
+	res = probe_resource(dev, PCI_BASE_ADDRESS_2);
 	if (res == NULL) {
 		printk(BIOS_DEBUG, "gma: memory resource not found.\n");
 		return;

src/northbridge/intel/sandybridge/gma.c

@@ -308,7 +308,7 @@ static void gma_pm_init_pre_vbios(struct device *dev)
 
 	printk(BIOS_DEBUG, "GT Power Management Init\n");
 
-	gtt_res = find_resource(dev, PCI_BASE_ADDRESS_0);
+	gtt_res = probe_resource(dev, PCI_BASE_ADDRESS_0);
 	if (!gtt_res || !gtt_res->base)
 		return;