linux/drivers/pci/msi
Thomas Gleixner dd7f5a11ac PCI/MSI: Remove bogus warning in pci_irq_get_affinity()
The recent overhaul of pci_irq_get_affinity() introduced a regression when
pci_irq_get_affinity() is called for an MSI-X interrupt which was not
allocated with affinity descriptor information.

The original code just returned a NULL pointer in that case, but the rework
added a WARN_ON() under the assumption that the corresponding WARN_ON() in
the MSI case can be applied to MSI-X as well.

In fact the MSI warning in the original code does not make sense either
because it's legitimate to invoke pci_irq_get_affinity() for a MSI
interrupt which was not allocated with affinity descriptor information.

Remove it and just return NULL as the original code did.

Fixes: f482359001 ("PCI/MSI: Simplify pci_irq_get_affinity()")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/87ee4n38sm.ffs@tglx
2022-02-04 09:54:20 +01:00
..
irqdomain.c PCI/MSI: Prevent UAF in error path 2022-01-21 02:14:46 +01:00
legacy.c PCI/MSI: Prevent UAF in error path 2022-01-21 02:14:46 +01:00
Makefile
msi.c PCI/MSI: Remove bogus warning in pci_irq_get_affinity() 2022-02-04 09:54:20 +01:00
msi.h
pcidev_msi.c