diff options
| author | Benjamin Li <benli@broadcom.com> | 2010-03-23 13:13:11 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-21 12:45:40 -0700 |
| commit | 54142c959f88de9f41e637f39306085b8d7defcc (patch) | |
| tree | 6d31d737341fe348ae691613c754ae90da4a1045 /drivers | |
| parent | bd33d194a874963afdc3261fa1158b720e90633c (diff) | |
bnx2: Fix netpoll crash.
commit 4327ba435a56ada13eedf3eb332e583c7a0586a9 upstream.
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: Benjamin Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/bnx2.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index a555c90aae8..1d2db7b5d55 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -247,6 +247,8 @@ 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; @@ -6214,6 +6216,7 @@ 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) @@ -8205,7 +8208,7 @@ 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); @@ -8274,7 +8277,6 @@ 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); |