5.4-stable review patch. If anyone has any objections, please let me know.
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From: Ilpo Järvinen ilpo.jarvinen@linux.intel.com
[ Upstream commit ec0b4c4d45cf7cf9a6c9626a494a89cb1ae7c645 ]
x86_of_pci_irq_enable() returns PCIBIOS_* code received from pci_read_config_byte() directly and also -EINVAL which are not compatible error types. x86_of_pci_irq_enable() is used as (*pcibios_enable_irq) function which should not return PCIBIOS_* codes.
Convert the PCIBIOS_* return code from pci_read_config_byte() into normal errno using pcibios_err_to_errno().
Fixes: 96e0a0797eba ("x86: dtb: Add support for PCI devices backed by dtb nodes") Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Borislav Petkov (AMD) bp@alien8.de Link: https://lore.kernel.org/r/20240527125538.13620-1-ilpo.jarvinen@linux.intel.c... Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/kernel/devicetree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index 8d85e00bb40a5..04c5f25877998 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -91,7 +91,7 @@ static int x86_of_pci_irq_enable(struct pci_dev *dev)
ret = pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); if (ret) - return ret; + return pcibios_err_to_errno(ret); if (!pin) return 0;