Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932109Ab0LMGX5 (ORCPT ); Mon, 13 Dec 2010 01:23:57 -0500 Received: from sm-d311v.smileserver.ne.jp ([203.211.202.206]:24416 "EHLO sm-d311v.smileserver.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752340Ab0LMGWE (ORCPT ); Mon, 13 Dec 2010 01:22:04 -0500 From: Tomoya MORINAGA To: wg@grandegger.com, w.sang@pengutronix.de, chripell@fsfe.org, 21cnbao@gmail.com, sameo@linux.intel.com, socketcan-core@lists.berlios.de, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, davem@davemloft.net Cc: qi.wang@intel.com, yong.y.wang@intel.com, andrew.chih.howe.khor@intel.com, joel.clark@intel.com, kok.howg.ewe@intel.com, margie.foster@intel.com, Tomoya MORINAGA Subject: [PATCH net-next-2.6 v9 13/20] pch_can: Fix bit timing calculation issue Date: Mon, 13 Dec 2010 15:24:19 +0900 Message-Id: <1292221467-8039-13-git-send-email-tomoya-linux@dsn.okisemi.com> X-Mailer: git-send-email 1.6.0.6 In-Reply-To: <1292221467-8039-12-git-send-email-tomoya-linux@dsn.okisemi.com> References: <1292221467-8039-1-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-2-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-3-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-4-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-5-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-6-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-7-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-8-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-9-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-10-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-11-git-send-email-tomoya-linux@dsn.okisemi.com> <1292221467-8039-12-git-send-email-tomoya-linux@dsn.okisemi.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1563 Lines: 40 Modify like use calculated value directly passed by CAN core module. Signed-off-by: Tomoya MORINAGA Acked-by: Marc Kleine-Budde --- drivers/net/can/pch_can.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c index 3540978..5a6a0df 100644 --- a/drivers/net/can/pch_can.c +++ b/drivers/net/can/pch_can.c @@ -786,17 +786,15 @@ static int pch_set_bittiming(struct net_device *ndev) const struct can_bittiming *bt = &priv->can.bittiming; u32 canbit; u32 bepe; - u32 brp; /* Setting the CCE bit for accessing the Can Timing register. */ pch_can_bit_set(&priv->regs->cont, PCH_CTRL_CCE); - brp = (bt->tq) / (1000000000/PCH_CAN_CLK) - 1; - canbit = brp & PCH_MSK_BITT_BRP; + canbit = (bt->brp - 1) & PCH_MSK_BITT_BRP; canbit |= (bt->sjw - 1) << PCH_BIT_SJW_SHIFT; canbit |= (bt->phase_seg1 + bt->prop_seg - 1) << PCH_BIT_TSEG1_SHIFT; canbit |= (bt->phase_seg2 - 1) << PCH_BIT_TSEG2_SHIFT; - bepe = (brp & PCH_MSK_BRPE_BRPE) >> PCH_BIT_BRPE_BRPE_SHIFT; + bepe = ((bt->brp - 1) & PCH_MSK_BRPE_BRPE) >> PCH_BIT_BRPE_BRPE_SHIFT; iowrite32(canbit, &priv->regs->bitt); iowrite32(bepe, &priv->regs->brpe); pch_can_bit_clear(&priv->regs->cont, PCH_CTRL_CCE); -- 1.6.0.6 -- 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/