tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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Merge tag 'irq-msi-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull MSI interrupt update from Thomas Gleixner:
"A small update for the MSI interrupt library to check for callers
which fail to provide the mandatory irq_write_msi_msg() callback,
which prevents a NULL pointer dereference later"

* tag 'irq-msi-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/msi-lib: Refuse initialization when irq_write_msi_msg() is missing

Linus Torvalds 1d5e4035 c0ecb2a9

+3
+3
drivers/irqchip/irq-msi-lib.c
··· 48 48 return false; 49 49 } 50 50 51 + if (WARN_ON_ONCE(!chip->irq_write_msi_msg)) 52 + return false; 53 + 51 54 required_flags = pops->required_flags; 52 55 53 56 /* Is the target domain bus token supported? */