From f847e840157b91a490a13df78c4a6d4e5700ba0a Mon Sep 17 00:00:00 2001 From: Michael Margolin Date: Thu, 25 Apr 2024 17:18:14 +0000 Subject: [PATCH] RDMA/efa: Add shutdown notifier Add driver function to stop the device and release any active IRQs as preparation for shutdown. This should fix issues caused by unexpected AQ interrupts when booting kernel using kexec and possible data integrity issues when the system is being shutdown during traffic. Link: https://lore.kernel.org/r/20240425171814.25216-1-mrgolin@amazon.com Reviewed-by: Firas Jahjah Reviewed-by: Yonatan Nachum Signed-off-by: Michael Margolin Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/efa/efa_main.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/infiniband/hw/efa/efa_main.c b/drivers/infiniband/hw/efa/efa_main.c index 5fa3603c80d82..d1a48f988f6c0 100644 --- a/drivers/infiniband/hw/efa/efa_main.c +++ b/drivers/infiniband/hw/efa/efa_main.c @@ -671,11 +671,22 @@ static void efa_remove(struct pci_dev *pdev) efa_remove_device(pdev); } +static void efa_shutdown(struct pci_dev *pdev) +{ + struct efa_dev *dev = pci_get_drvdata(pdev); + + efa_destroy_eqs(dev); + efa_com_dev_reset(&dev->edev, EFA_REGS_RESET_SHUTDOWN); + efa_free_irq(dev, &dev->admin_irq); + efa_disable_msix(dev); +} + static struct pci_driver efa_pci_driver = { .name = DRV_MODULE_NAME, .id_table = efa_pci_tbl, .probe = efa_probe, .remove = efa_remove, + .shutdown = efa_shutdown, }; module_pci_driver(efa_pci_driver); -- 2.30.2