On Wed, Aug 18, 2021 at 1:47 PM Pali Rohár <pali@xxxxxxxxxx> wrote: > I do not see any entry in MAINTAINERS file for pci-ftpci100.c driver, so > I'm not sure to whom should I address this issue... It's me. > During pci-aardvark review, Marc pointed one issue which is currently > available also in pci-ftpci100.c driver. > > When masking or unmasking interrupts there is read-modify-write sequence > for FARADAY_PCI_CTRL2 register without any locking and is not atomic: > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/pci/controller/pci-ftpci100.c?h=v5.13#n270 > > So there is race condition when masking/unmasking more interrupts at the > same time. I thought those operations were called in atomic context. How did you fix it? Yours, Linus Walleij
