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Added a clobbering-mitigating mechanism to pci_relocate_slot(), fixes PCI graphics cards on PC Chips ALi ALADDiN V and Pro II machines.

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OBattler
2023-10-05 00:55:25 +02:00
parent 488e066e8c
commit e9bf3814f4
1 changed files with 6 additions and 4 deletions
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10
src/pci.c
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@@ -240,7 +240,6 @@ pci_relocate_slot(int type, int new_slot)
{ {
int card = -1; int card = -1;
int old_slot; int old_slot;
uint8_t mapping;
if ((new_slot < 0) || (new_slot > 31)) if ((new_slot < 0) || (new_slot > 31))
return; return;
@@ -257,9 +256,12 @@ pci_relocate_slot(int type, int new_slot)
old_slot = pci_cards[card].id; old_slot = pci_cards[card].id;
pci_cards[card].id = new_slot; pci_cards[card].id = new_slot;
mapping = pci_card_to_slot_mapping[0][old_slot];
pci_card_to_slot_mapping[0][old_slot] = PCI_CARD_INVALID; if (pci_card_to_slot_mapping[0][old_slot] == card)
pci_card_to_slot_mapping[0][new_slot] = mapping; pci_card_to_slot_mapping[0][old_slot] = PCI_CARD_INVALID;
if (pci_card_to_slot_mapping[0][new_slot] == PCI_CARD_INVALID)
pci_card_to_slot_mapping[0][new_slot] = card;
} }
/* Write PCI enable/disable key, split for the ALi M1435. */ /* Write PCI enable/disable key, split for the ALi M1435. */