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x86/efistub: Fix PCI ROM preservation in mixed mode

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[ Upstream commit 8b94da9255 ]

preserve_pci_rom_image() was accessing the romsize field in
efi_pci_io_protocol_t directly instead of using the efi_table_attr()
helper. This prevents the ROM image from being saved correctly during a
mixed mode boot.

Fixes: 2c3625cb9f ("efi/x86: Fold __setup_efi_pci32() and __setup_efi_pci64() into one function")
Signed-off-by: Mikel Rychliski <mikel@mikelr.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mikel Rychliski
2023-08-23 17:51:58 -04:00
committed by Greg Kroah-Hartman
parent fcf78a17bb
commit 91f76271ec
1 changed files with 1 additions and 1 deletions
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2
drivers/firmware/efi/libstub/x86-stub.c
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@@ -61,7 +61,7 @@ preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
rom->data.type = SETUP_PCI; rom->data.type = SETUP_PCI;
rom->data.len = size - sizeof(struct setup_data); rom->data.len = size - sizeof(struct setup_data);
rom->data.next = 0; rom->data.next = 0;
rom->pcilen = pci->romsize; rom->pcilen = romsize;
*__rom = rom; *__rom = rom;
status = efi_call_proto(pci, pci.read, EfiPciIoWidthUint16, status = efi_call_proto(pci, pci.read, EfiPciIoWidthUint16,