bnxt_en: don't disable an already disabled PCI device

If device is already disabled in reset path and PCI io error is
detected before the device could be enabled, driver could
call pci_disable_device() for already disabled device. Fix this
problem by calling pci_disable_device() only if the device is already
enabled.

Fixes: 6316ea6db93d ("bnxt_en: Enable AER support.")
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index f56245e..fdfb75a 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -13436,7 +13436,8 @@ static pci_ers_result_t bnxt_io_error_detected(struct pci_dev *pdev,
        if (netif_running(netdev))
                bnxt_close(netdev);
 
-       pci_disable_device(pdev);
+       if (pci_is_enabled(pdev))
+               pci_disable_device(pdev);
        bnxt_free_ctx_mem(bp);
        kfree(bp->ctx);
        bp->ctx = NULL;