diff options
| author | Vasundhara Volam <vasundhara-v.volam@broadcom.com> | 2020-02-20 17:26:35 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-05 16:43:34 +0100 |
| commit | 177489edbe2444c28451532f1612f0a801626aed (patch) | |
| tree | 7322195b8cbb75ca236033fee2eac67fcd489394 | |
| parent | 7daf11d64b8a7dfeb1a47df7fcfd713b53f112bc (diff) | |
bnxt_en: Issue PCIe FLR in kdump kernel to cleanup pending DMAs.
[ Upstream commit 8743db4a9acfd51f805ac0c87bcaae92c42d1061 ]
If crashed kernel does not shutdown the NIC properly, PCIe FLR
is required in the kdump kernel in order to initialize all the
functions properly.
Fixes: d629522e1d66 ("bnxt_en: Reduce memory usage when running in kdump kernel.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index e03e610dd183..374e11a91790 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -11712,6 +11712,14 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (version_printed++ == 0) pr_info("%s", version); + /* Clear any pending DMA transactions from crash kernel + * while loading driver in capture kernel. + */ + if (is_kdump_kernel()) { + pci_clear_master(pdev); + pcie_flr(pdev); + } + max_irqs = bnxt_get_max_irq(pdev); dev = alloc_etherdev_mq(sizeof(*bp), max_irqs); if (!dev) |