diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2018-11-19 13:08:01 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2018-11-25 16:44:28 +0000 |
| commit | 48fa9225ca18e6320e032b8eedf81087de224cc4 (patch) | |
| tree | ef52a6b19b084e08f0cae184ddcf68b7d91a0f0a | |
| parent | 9651058c42e69e00e47ccbcdbbc6b4e5ab7b4a63 (diff) | |
nb/intel/gm45/northbridge.c: Check for NULL pointers
Change-Id: Ic12a8c145d6348086f9931af93ce6d3b3dcb9039
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/29688
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
| -rw-r--r-- | src/northbridge/intel/gm45/northbridge.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/northbridge/intel/gm45/northbridge.c b/src/northbridge/intel/gm45/northbridge.c index a738905ceb..0fd7fe5a92 100644 --- a/src/northbridge/intel/gm45/northbridge.c +++ b/src/northbridge/intel/gm45/northbridge.c @@ -228,14 +228,23 @@ u32 northbridge_get_tseg_base(void) u32 northbridge_get_tseg_size(void) { - const u8 esmramc = pci_read_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), - D0F0_ESMRAMC); + struct device *dev = dev_find_slot(0, PCI_DEVFN(0, 0)); + + if (dev == NULL) + die("could not find pci 00:00.0!\n"); + + const u8 esmramc = pci_read_config8(dev, D0F0_ESMRAMC); return decode_tseg_size(esmramc) << 10; } void northbridge_write_smram(u8 smram) { - pci_write_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), D0F0_SMRAM, smram); + struct device *dev = dev_find_slot(0, PCI_DEVFN(0, 0)); + + if (dev == NULL) + die("could not find pci 00:00.0!\n"); + + pci_write_config8(dev, D0F0_SMRAM, smram); } /* |