From 7ff2b7a1821b61c324626ad57c3664398fb0083d Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan+linaro@kernel.org> Date: Tue, 28 Nov 2023 09:15:12 +0100 Subject: PCI/ASPM: Add pci_disable_link_state_locked() lockdep assert Add a lockdep assert to pci_disable_link_state_locked() which should only be called with a pci_bus_sem read lock held. Link: https://lore.kernel.org/r/20231128081512.19387-7-johan+linaro@kernel.org Signed-off-by: Johan Hovold <johan+linaro@kernel.org> [bhelgaas: include function name in subject, commit log] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> --- drivers/pci/pcie/aspm.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/pci') diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index d7a3ca555cc1..5dab531c8654 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -1090,6 +1090,8 @@ static int __pci_disable_link_state(struct pci_dev *pdev, int state, bool locked int pci_disable_link_state_locked(struct pci_dev *pdev, int state) { + lockdep_assert_held_read(&pci_bus_sem); + return __pci_disable_link_state(pdev, state, true); } EXPORT_SYMBOL(pci_disable_link_state_locked); -- cgit v1.2.3