From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755747Ab2LNJoK (ORCPT ); Fri, 14 Dec 2012 04:44:10 -0500 Received: from mga14.intel.com ([143.182.124.37]:57582 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753501Ab2LNJoI (ORCPT ); Fri, 14 Dec 2012 04:44:08 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,279,1355126400"; d="scan'208";a="180834815" From: Andy Shevchenko To: Vinod Koul , spear-devel , linux-kernel@vger.kernel.org, Viresh Kumar Cc: Andy Shevchenko Subject: [PATCH] dw_dmac: update tx_node_active in dwc_do_single_block Date: Fri, 14 Dec 2012 11:43:42 +0200 Message-Id: <1355478222-10610-1-git-send-email-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The "else" keyword in the dw_dma_tasklet is removed as well. All together simplifies the logic of the code and understanding of what is happening there. Signed-off-by: Andy Shevchenko --- drivers/dma/dw_dmac.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index 3c8acfa..8037b66 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -264,6 +264,9 @@ static inline void dwc_do_single_block(struct dw_dma_chan *dwc, channel_writel(dwc, CTL_LO, ctllo); channel_writel(dwc, CTL_HI, desc->lli.ctlhi); channel_set_bit(dw, CH_EN, dwc->mask); + + /* Move pointer to next descriptor */ + dwc->tx_node_active = dwc->tx_node_active->next; } /* Called with dwc->lock held and bh disabled */ @@ -295,7 +298,7 @@ static void dwc_dostart(struct dw_dma_chan *dwc, struct dw_desc *first) dwc_initialize(dwc); dwc->tx_list = &first->tx_list; - dwc->tx_node_active = first->tx_list.next; + dwc->tx_node_active = &first->tx_list; dwc_do_single_block(dwc, first); @@ -621,18 +624,13 @@ static void dw_dma_tasklet(unsigned long data) dma_writel(dw, CLEAR.XFER, dwc->mask); - /* move pointer to next descriptor */ - dwc->tx_node_active = - dwc->tx_node_active->next; - dwc_do_single_block(dwc, desc); spin_unlock_irqrestore(&dwc->lock, flags); continue; - } else { - /* we are done here */ - clear_bit(DW_DMA_IS_SOFT_LLP, &dwc->flags); } + /* we are done here */ + clear_bit(DW_DMA_IS_SOFT_LLP, &dwc->flags); } spin_unlock_irqrestore(&dwc->lock, flags); -- 1.7.10.4