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Date: Tue, 19 Oct 2021 10:49:54 +0300 From: Leon Romanovsky <leon@...nel.org> To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org> Cc: Leon Romanovsky <leonro@...dia.com>, Amit Cohen <amcohen@...dia.com>, Jiri Pirko <jiri@...dia.com>, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: [PATCH net-next] devlink: Remove extra device_lock assert checks From: Leon Romanovsky <leonro@...dia.com> PCI core code in the pci_call_probe() has a path that doesn't hold device_lock. It happens because the ->probe() is called through the workqueue mechanism. 349 static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev, 350 const struct pci_device_id *id) 351 { 352 .... 377 if (cpu < nr_cpu_ids) 378 error = work_on_cpu(cpu, local_pci_probe, &ddi); Luckily enough, the core still ensures that only single flow is executed, so it safe to remove the assert checks that anyway were added for annotations purposes. Fixes: b88f7b1203bf ("devlink: Annotate devlink API calls") Reported-by: Amit Cohen <amcohen@...dia.com> Signed-off-by: Leon Romanovsky <leonro@...dia.com> --- net/core/devlink.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/net/core/devlink.c b/net/core/devlink.c index 3ce6147a2fe8..3464854015a2 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -9147,7 +9147,6 @@ void devlink_register(struct devlink *devlink) { ASSERT_DEVLINK_NOT_REGISTERED(devlink); /* Make sure that we are in .probe() routine */ - device_lock_assert(devlink->dev); mutex_lock(&devlink_mutex); xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED); @@ -9165,7 +9164,6 @@ void devlink_unregister(struct devlink *devlink) { ASSERT_DEVLINK_REGISTERED(devlink); /* Make sure that we are in .remove() routine */ - device_lock_assert(devlink->dev); devlink_put(devlink); wait_for_completion(&devlink->comp); -- 2.31.1
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