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>
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@ -228,14 +228,23 @@ u32 northbridge_get_tseg_base(void)
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u32 northbridge_get_tseg_size(void)
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{
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const u8 esmramc = pci_read_config8(dev_find_slot(0, PCI_DEVFN(0, 0)),
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D0F0_ESMRAMC);
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struct device *dev = dev_find_slot(0, PCI_DEVFN(0, 0));
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if (dev == NULL)
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die("could not find pci 00:00.0!\n");
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const u8 esmramc = pci_read_config8(dev, D0F0_ESMRAMC);
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return decode_tseg_size(esmramc) << 10;
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}
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void northbridge_write_smram(u8 smram)
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{
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pci_write_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), D0F0_SMRAM, smram);
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struct device *dev = dev_find_slot(0, PCI_DEVFN(0, 0));
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if (dev == NULL)
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die("could not find pci 00:00.0!\n");
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pci_write_config8(dev, D0F0_SMRAM, smram);
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}
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/*
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