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authorMichael Chan <mchan@broadcom.com>2010-06-01 19:05:36 +0400
committerDavid S. Miller <davem@davemloft.net>2010-06-02 13:26:40 +0400
commitf048fa9c8686119c3858a463cab6121dced7c0bf (patch)
treec68dd0cc095559c348c8916b6e3372b4e0610e9a /drivers/net/bnx2.c
parentfafeeb6c80e3842c6dc19d05de09a23f23eef0d8 (diff)
downloadlinux-f048fa9c8686119c3858a463cab6121dced7c0bf.tar.xz
bnx2: Fix hang during rmmod bnx2.
The regression is caused by: commit 4327ba435a56ada13eedf3eb332e583c7a0586a9 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>
Diffstat (limited to 'drivers/net/bnx2.c')
-rw-r--r--drivers/net/bnx2.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 188e356c30a3..949d7a9dcf92 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -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;