From: Michael Margolin Date: Thu, 25 Apr 2024 17:18:14 +0000 (+0000) Subject: RDMA/efa: Add shutdown notifier X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f847e840157b91a490a13df78c4a6d4e5700ba0a;p=linux.git 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 --- 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);