From fa58b59493665e81454079ad372b11a0ed34bd2d Mon Sep 17 00:00:00 2001 From: Ofir Bitton Date: Mon, 12 Feb 2024 14:35:24 +0200 Subject: [PATCH] accel/habanalabs: modify pci health check Today we read PCI VENDOR-ID in order to make sure PCI link is healthy. Apparently the VENDOR-ID might be stored on host and hence, when we read it we might not access the PCI bus. In order to make sure PCI health check is reliable, we will start checking the DEVICE-ID instead. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay --- drivers/accel/habanalabs/common/device.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/accel/habanalabs/common/device.c b/drivers/accel/habanalabs/common/device.c index 3b9e8a21d7df..8f92445c5a90 100644 --- a/drivers/accel/habanalabs/common/device.c +++ b/drivers/accel/habanalabs/common/device.c @@ -1035,14 +1035,14 @@ static void device_early_fini(struct hl_device *hdev) static bool is_pci_link_healthy(struct hl_device *hdev) { - u16 vendor_id; + u16 device_id; if (!hdev->pdev) return false; - pci_read_config_word(hdev->pdev, PCI_VENDOR_ID, &vendor_id); + pci_read_config_word(hdev->pdev, PCI_DEVICE_ID, &device_id); - return (vendor_id == PCI_VENDOR_ID_HABANALABS); + return (device_id == hdev->pdev->device); } static int hl_device_eq_heartbeat_check(struct hl_device *hdev) -- 2.25.1