Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753465Ab1CJQVj (ORCPT ); Thu, 10 Mar 2011 11:21:39 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:48904 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751788Ab1CJQVi (ORCPT ); Thu, 10 Mar 2011 11:21:38 -0500 From: Abhilash K V To: socketcan-core@lists.berlios.de, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: wg@grandegger.com, linux-omap@vger.kernel.org, Abhilash K V , Vaibhav Hiremath Subject: [PATCH] can : TI_HECC : Unintialized variables Date: Thu, 10 Mar 2011 21:51:27 +0530 Message-Id: <1299774087-8532-1-git-send-email-abhilash.kv@ti.com> X-Mailer: git-send-email 1.6.2.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1533 Lines: 41 1. In ti_hecc_xmit(), "data" is not initialized, causing undesirable effects like setting the RTR field for every transmit. 2. In ti_hecc_probe(), the spinlock priv->mbx_lock is not inited, causing a spinlock lockup BUG. Signed-off-by: Vaibhav Hiremath Acked-by: Anant Gole Signed-off-by: Abhilash K V --- drivers/net/can/ti_hecc.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c index 4d07f1e..73c6025 100644 --- a/drivers/net/can/ti_hecc.c +++ b/drivers/net/can/ti_hecc.c @@ -503,6 +503,7 @@ static netdev_tx_t ti_hecc_xmit(struct sk_buff *skb, struct net_device *ndev) spin_unlock_irqrestore(&priv->mbx_lock, flags); /* Prepare mailbox for transmission */ + data = cf->can_dlc; if (cf->can_id & CAN_RTR_FLAG) /* Remote transmission request */ data |= HECC_CANMCF_RTR; data |= get_tx_head_prio(priv) << 8; @@ -923,6 +924,7 @@ static int ti_hecc_probe(struct platform_device *pdev) priv->can.do_get_state = ti_hecc_get_state; priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES; + spin_lock_init(&priv->mbx_lock); ndev->irq = irq->start; ndev->flags |= IFF_ECHO; platform_set_drvdata(pdev, ndev); -- 1.6.2.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/