diff options
| author | Michael Chan <mchan@broadcom.com> | 2013-09-18 01:50:39 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-09-18 12:24:32 -0400 |
| commit | 48a30569732be782119960a47ca05417e7e07dab (patch) | |
| tree | ca54f6013fa114b6d70e685be3d003d8aef0af53 /drivers/net | |
| parent | f78afb356303e5f78750321a63809ef5c2d13c0d (diff) | |
| download | kernel-common-48a30569732be782119960a47ca05417e7e07dab.tar.gz kernel-common-48a30569732be782119960a47ca05417e7e07dab.tar.bz2 kernel-common-48a30569732be782119960a47ca05417e7e07dab.zip | |
cnic: Fix crash in cnic_bnx2x_service_kcq()
commit 104a43edb264321a4d41850e98153b4fa8a9ef42
cnic: Use CHIP_NUM macros from bnx2x.h
changed the code to use the bnx2x macro NO_FCOE() to determine if FCoE
is supported or not. There is another place in cnic that is still using
the old method to determine if FCoE is supported or not. The 2 methods
may not yield the same result after the network interface is brought down
and up. This will cause the crash as cnic_bnx2x_service_kcq() will access
the uninitialized cp->kcq2.
The fix is to consistently use the same macro CNIC_SUPPORTS_FCOE() which
uses the bnx2x NO_FCOE() macro. As a follow-up, we can clean up the code
to remove the old method as it is no longer needed.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/broadcom/cnic.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c index 93da16b36df0..99394bd49a13 100644 --- a/drivers/net/ethernet/broadcom/cnic.c +++ b/drivers/net/ethernet/broadcom/cnic.c @@ -3135,6 +3135,7 @@ static void cnic_service_bnx2x_bh(unsigned long data) { struct cnic_dev *dev = (struct cnic_dev *) data; struct cnic_local *cp = dev->cnic_priv; + struct bnx2x *bp = netdev_priv(dev->netdev); u32 status_idx, new_status_idx; if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) @@ -3146,7 +3147,7 @@ static void cnic_service_bnx2x_bh(unsigned long data) CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX); - if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE) { + if (!CNIC_SUPPORTS_FCOE(bp)) { cp->arm_int(dev, status_idx); break; } |