Change in coreboot[master]: QEMU: Only call `pci_assign_irqs` with non-NULL dev

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/55900 )

Change subject: QEMU: Only call `pci_assign_irqs` with non-NULL dev
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QEMU: Only call `pci_assign_irqs` with non-NULL dev

Do not call `pci_assign_irqs` with a NULL device pointer.

Change-Id: Ide9ae38dedd881ed673ba1838a1e29529b306937
Signed-off-by: Angel Pons 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55900
Tested-by: build bot (Jenkins) 
Reviewed-by: Nico Huber 
---
M src/mainboard/emulation/qemu-i440fx/mainboard.c
M src/mainboard/emulation/qemu-q35/mainboard.c
2 files changed, 15 insertions(+), 6 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Nico Huber: Looks good to me, approved

diff --git a/src/mainboard/emulation/qemu-i440fx/mainboard.c b/src/mainboard/emulation/qemu-i440fx/mainboard.c
index 218c47f..a7c6b32 100644
--- a/src/mainboard/emulation/qemu-i440fx/mainboard.c
+++ b/src/mainboard/emulation/qemu-i440fx/mainboard.c
@@ -24,8 +24,11 @@
    pc_keyboard_init(NO_AUX_DEVICE);

/* setup IRQ routing */
-	for (i = 0; i < 32; i++)
-		pci_assign_irqs(pcidev_on_root(i, 0), qemu_i440fx_irqs + (i % 4));
+	for (i = 0; i < 32; i++) {
+		struct device *d = pcidev_on_root(i, 0);
+		if (d)
+			pci_assign_irqs(d, qemu_i440fx_irqs + (i % 4));
+	}
 }

static void qemu_nb_read_resources(struct device *dev)
diff --git a/src/mainboard/emulation/qemu-q35/mainboard.c b/src/mainboard/emulation/qemu-q35/mainboard.c
index e53404d..534f606 100644
--- a/src/mainboard/emulation/qemu-q35/mainboard.c
+++ b/src/mainboard/emulation/qemu-q35/mainboard.c
@@ -31,11 +31,17 @@
    pc_keyboard_init(NO_AUX_DEVICE);

/* setup IRQ routing for pci slots */
-	for (i = 0; i < 25; i++)
-		pci_assign_irqs(pcidev_on_root(i, 0), qemu_q35_irqs + (i % 4));
+	for (i = 0; i < 25; i++) {
+		struct device *d = pcidev_on_root(i, 0);
+		if (d)
+			pci_assign_irqs(d, qemu_q35_irqs + (i % 4));
+	}
    /* setup IRQ routing southbridge devices */
-	for (i = 25; i < 32; i++)
-		pci_assign_irqs(pcidev_on_root(i, 0), qemu_q35_irqs);
+	for (i = 25; i < 32; i++) {
+		struct device *d = pcidev_on_root(i, 0);
+		if (d)
+			pci_assign_irqs(d, qemu_q35_irqs);
+	}
 }

static void qemu_nb_read_resources(struct device *dev)