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| author | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2019-03-23 03:36:51 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-03-26 01:58:50 +0300 |
| commit | 3e82a7f9031f204ac0f8dea494ac3870ad111261 (patch) | |
| tree | 9577657dc21dde77eb92b9e96d5e3e99f8ebec72 /drivers/soundwire | |
| parent | 9e98c678c2d6ae3a17cb2de55d17f69dddaa231b (diff) | |
| download | linux-3e82a7f9031f204ac0f8dea494ac3870ad111261.tar.xz | |
PCI/LINK: Supply IRQ handler so level-triggered IRQs are acked
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: e8303bb7a75c ("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>
Diffstat (limited to 'drivers/soundwire')
0 files changed, 0 insertions, 0 deletions