diff options
| author | Yuval Mintz <Yuval.Mintz@qlogic.com> | 2016-02-24 16:52:49 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-25 16:54:44 -0500 |
| commit | 0dfaba6d0b4755fb379bd90dd5451e077617003f (patch) | |
| tree | b91ca0c09de23b9fefaa2c006b03d1b6fce88fd4 /drivers | |
| parent | d43d3f0f393b21ee14c0487d5757edae194c4848 (diff) | |
qed: Prevent probe on previous error
Don't allow driver to probe on an adapter at a failed state;
Gracefully block the probe instead.
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_main.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c index 08cd92d66b6b..e4e6ca5e8cee 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_main.c +++ b/drivers/net/ethernet/qlogic/qed/qed_main.c @@ -99,12 +99,15 @@ static void qed_free_pci(struct qed_dev *cdev) pci_disable_device(pdev); } +#define PCI_REVISION_ID_ERROR_VAL 0xff + /* Performs PCI initializations as well as initializing PCI-related parameters * in the device structrue. Returns 0 in case of success. */ static int qed_init_pci(struct qed_dev *cdev, struct pci_dev *pdev) { + u8 rev_id; int rc; cdev->pdev = pdev; @@ -138,6 +141,14 @@ static int qed_init_pci(struct qed_dev *cdev, pci_save_state(pdev); } + pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id); + if (rev_id == PCI_REVISION_ID_ERROR_VAL) { + DP_NOTICE(cdev, + "Detected PCI device error [rev_id 0x%x]. Probably due to prior indication. Aborting.\n", + rev_id); + rc = -ENODEV; + goto err2; + } if (!pci_is_pcie(pdev)) { DP_NOTICE(cdev, "The bus is not PCI Express\n"); rc = -EIO; |