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authorEddie Wai <eddie.wai@broadcom.com>2014-01-01 11:18:34 +0400
committerDavid S. Miller <davem@davemloft.net>2014-01-02 07:08:08 +0400
commitd15e2a92c4c263fd44a0b41e637a032bd618e6c9 (patch)
treeaa545877a174e1c3986d6dbe3ed42d08fce97940 /drivers/net/ethernet/broadcom/cnic.c
parent487d9edcd238f2d30fbe562871ab061f34b4a530 (diff)
downloadlinux-d15e2a92c4c263fd44a0b41e637a032bd618e6c9.tar.xz
cnic: Add a signature to indicate valid doorbell offset.
The buffer that is used to pass doorbell offset to the userspace UIO driver may contain nonzero value in older versions of bnx2x driver. Userspace cannot easily tell whether it contains a valid doorbell offset or not. With the added signature, userspace will only use the doorbell offset if the signature is present. Update version to 2.5.19. Signed-off-by: Eddie Wai <eddie.wai@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/cnic.c')
-rw-r--r--drivers/net/ethernet/broadcom/cnic.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c
index f58a8b80302d..fcf9105a5476 100644
--- a/drivers/net/ethernet/broadcom/cnic.c
+++ b/drivers/net/ethernet/broadcom/cnic.c
@@ -5220,6 +5220,7 @@ static void cnic_init_rings(struct cnic_dev *dev)
cnic_ring_ctl(dev, cid, cli, 1);
*cid_ptr = cid >> 4;
*(cid_ptr + 1) = cid * bp->db_size;
+ *(cid_ptr + 2) = UIO_USE_TX_DOORBELL;
}
}