renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-22 20:23:57 +08:00
Code

bnx2: Fix hang during rmmod bnx2.

Browse Source 
The regression is caused by:

commit 4327ba435a
    bnx2: Fix netpoll crash.

If ->open() and ->close() are called multiple times, the same napi structs
will be added to dev->napi_list multiple times, corrupting the dev->napi_list.
This causes free_netdev() to hang during rmmod.

We fix this by calling netif_napi_del() during ->close().

Also, bnx2_init_napi() must not be in the __devinit section since it is
called by ->open().

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2010-06-01 15:05:36 +00:00 committed by David S. Miller
parent fafeeb6c80
commit f048fa9c86
1 changed files with 13 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/bnx2.c
View File

@ -247,6 +247,7 @@ static const struct flash_spec flash_5709 = {
MODULE_DEVICE_TABLE(pci, bnx2_pci_tbl);
static void bnx2_init_napi(struct bnx2 *bp);
static void bnx2_del_napi(struct bnx2 *bp);
static inline u32 bnx2_tx_avail(struct bnx2 *bp, struct bnx2_tx_ring_info *txr)
{
@ -6270,6 +6271,7 @@ open_err:
bnx2_free_skbs(bp);
bnx2_free_irq(bp);
bnx2_free_mem(bp);
bnx2_del_napi(bp);
return rc;
}
@ -6537,6 +6539,7 @@ bnx2_close(struct net_device *dev)
bnx2_free_irq(bp);
bnx2_free_skbs(bp);
bnx2_free_mem(bp);
bnx2_del_napi(bp);
bp->link_up = 0;
netif_carrier_off(bp->dev);
bnx2_set_power_state(bp, PCI_D3hot);
@ -8227,7 +8230,16 @@ bnx2_bus_string(struct bnx2 *bp, char *str)
return str;
}
static void __devinit
static void
bnx2_del_napi(struct bnx2 *bp)
{
int i;
for (i = 0; i < bp->irq_nvecs; i++)
netif_napi_del(&bp->bnx2_napi[i].napi);
}
static void
bnx2_init_napi(struct bnx2 *bp)
{
int i;