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Alexandru Gagniuc authored
A threaded IRQ with a NULL handler does not work with level-triggered interrupts. request_threaded_irq() will return an error: genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq 16 pcie_bw_notification: probe of 0000:00:1b.0:pcie010 failed with error -22 For level interrupts we need to silence the interrupt before exiting the IRQ handler, so just clear the PCI_EXP_LNKSTA_LBMS bit there. Fixes: e8303bb7 ("PCI/LINK: Report degraded links via link bandwidth notification") Reported-by:
Linus Torvalds <torvalds@linux-foundation.org> Reported-by:
Borislav Petkov <bp@suse.de> Signed-off-by:
Alexandru Gagniuc <mr.nuke.me@gmail.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com>
3e82a7f9