The following commit has been merged into the efi/urgent branch of tip: Commit-ID: 6fb9367a15d1a126d222d738b2702c7958594a5f Gitweb: https://git.kernel.org/tip/6fb9367a15d1a126d222d738b2702c7958594a5f Author: Lukas Wunner <lukas@xxxxxxxxx> AuthorDate: Wed, 02 Oct 2019 18:58:58 +02:00 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitterDate: Mon, 07 Oct 2019 15:24:35 +02:00 efi/cper: Fix endianness of PCIe class code The CPER parser assumes that the class code is big endian, but at least on this edk2-derived Intel Purley platform it's little endian: efi: EFI v2.50 by EDK II BIOS ID:PLYDCRB1.86B.0119.R05.1701181843 DMI: Intel Corporation PURLEY/PURLEY, BIOS PLYDCRB1.86B.0119.R05.1701181843 01/18/2017 {1}[Hardware Error]: device_id: 0000:5d:00.0 {1}[Hardware Error]: slot: 0 {1}[Hardware Error]: secondary_bus: 0x5e {1}[Hardware Error]: vendor_id: 0x8086, device_id: 0x2030 {1}[Hardware Error]: class_code: 000406 ^^^^^^ (should be 060400) Signed-off-by: Lukas Wunner <lukas@xxxxxxxxx> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> Cc: Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx> Cc: Dave Young <dyoung@xxxxxxxxxx> Cc: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx> Cc: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Lyude Paul <lyude@xxxxxxxxxx> Cc: Matthew Garrett <mjg59@xxxxxxxxxx> Cc: Octavian Purdila <octavian.purdila@xxxxxxxxx> Cc: Peter Jones <pjones@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Scott Talbert <swt@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: linux-efi@xxxxxxxxxxxxxxx Cc: linux-integrity@xxxxxxxxxxxxxxx Link: https://lkml.kernel.org/r/20191002165904.8819-2-ard.biesheuvel@xxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- drivers/firmware/efi/cper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c index addf074..b1af0de 100644 --- a/drivers/firmware/efi/cper.c +++ b/drivers/firmware/efi/cper.c @@ -381,7 +381,7 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie, printk("%s""vendor_id: 0x%04x, device_id: 0x%04x\n", pfx, pcie->device_id.vendor_id, pcie->device_id.device_id); p = pcie->device_id.class_code; - printk("%s""class_code: %02x%02x%02x\n", pfx, p[0], p[1], p[2]); + printk("%s""class_code: %02x%02x%02x\n", pfx, p[2], p[1], p[0]); } if (pcie->validation_bits & CPER_PCIE_VALID_SERIAL_NUMBER) printk("%s""serial number: 0x%04x, 0x%04x\n", pfx,
