Commit 4327ba43 authored by Benjamin Li's avatar Benjamin Li Committed by David S. Miller

bnx2: Fix netpoll crash.

The bnx2 driver calls netif_napi_add() for all the NAPI structs during
->probe() time but not all of them will be used if we're not in MSI-X
mode.  This creates a problem for netpoll since it will poll all the
NAPI structs in the dev_list whether or not they are scheduled, resulting
in a crash when we access structure fields not initialized for that vector.

We fix it by moving the netif_napi_add() call to ->open() after the number
of IRQ vectors has been determined.
Signed-off-by: default avatarBenjamin Li <benli@broadcom.com>
Signed-off-by: default avatarMichael Chan <mchan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4881a4f8
......@@ -246,6 +246,8 @@ static const struct flash_spec flash_5709 = {
MODULE_DEVICE_TABLE(pci, bnx2_pci_tbl);
static void bnx2_init_napi(struct bnx2 *bp);
static inline u32 bnx2_tx_avail(struct bnx2 *bp, struct bnx2_tx_ring_info *txr)
{
u32 diff;
......@@ -6197,6 +6199,7 @@ bnx2_open(struct net_device *dev)
bnx2_disable_int(bp);
bnx2_setup_int_mode(bp, disable_msi);
bnx2_init_napi(bp);
bnx2_napi_enable(bp);
rc = bnx2_alloc_mem(bp);
if (rc)
......@@ -8207,7 +8210,7 @@ bnx2_init_napi(struct bnx2 *bp)
{
int i;
for (i = 0; i < BNX2_MAX_MSIX_VEC; i++) {
for (i = 0; i < bp->irq_nvecs; i++) {
struct bnx2_napi *bnapi = &bp->bnx2_napi[i];
int (*poll)(struct napi_struct *, int);
......@@ -8276,7 +8279,6 @@ bnx2_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
dev->ethtool_ops = &bnx2_ethtool_ops;
bp = netdev_priv(dev);
bnx2_init_napi(bp);
pci_set_drvdata(pdev, dev);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment