From: Thadeu Lima de Souza Cascardo Date: Tue, 25 Nov 2014 16:21:11 +0000 (-0200) Subject: tg3: fix ring init when there are more TX than RX channels X-Git-Tag: v3.14.27~14 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dfe35fa73e531c9ce88d2fbdb5bd5716e9c190e6;p=platform%2Fkernel%2Flinux-stable.git tg3: fix ring init when there are more TX than RX channels [ Upstream commit a620a6bc1c94c22d6c312892be1e0ae171523125 ] If TX channels are set to 4 and RX channels are set to less than 4, using ethtool -L, the driver will try to initialize more RX channels than it has allocated, causing an oops. This fix only initializes the RX ring if it has been allocated. Signed-off-by: Thadeu Lima de Souza Cascardo Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 9373f1f59605..086eac5af5c2 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -8548,7 +8548,8 @@ static int tg3_init_rings(struct tg3 *tp) if (tnapi->rx_rcb) memset(tnapi->rx_rcb, 0, TG3_RX_RCB_RING_BYTES(tp)); - if (tg3_rx_prodring_alloc(tp, &tnapi->prodring)) { + if (tnapi->prodring.rx_std && + tg3_rx_prodring_alloc(tp, &tnapi->prodring)) { tg3_free_rings(tp); return -ENOMEM; }