This is a note to let you know that I've just added the patch titled
x86/of: Return consistent error type from x86_of_pci_irq_enable()
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-of-return-consistent-error-type-from-x86_of_pci_.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a61c3ca26a356af68ccea327fcce45078fd221ea
Author: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Date: Mon May 27 15:55:35 2024 +0300
x86/of: Return consistent error type from x86_of_pci_irq_enable()
[ 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@xxxxxxxxxxxxxxx>
Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Link: https://lore.kernel.org/r/20240527125538.13620-1-ilpo.jarvinen@xxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c
index ddffd80f5c525..2d654fdf001dc 100644
--- a/arch/x86/kernel/devicetree.c
+++ b/arch/x86/kernel/devicetree.c
@@ -92,7 +92,7 @@ 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;
