From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752964Ab3JVKOa (ORCPT ); Tue, 22 Oct 2013 06:14:30 -0400 Received: from www.linutronix.de ([62.245.132.108]:52872 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752036Ab3JVKO0 (ORCPT ); Tue, 22 Oct 2013 06:14:26 -0400 From: Sebastian Andrzej Siewior To: Vinod Koul Cc: Dan Williams , linux-kernel@vger.kernel.org, Felipe Balbi , linux-omap@vger.kernel.org, Daniel Mack , Sebastian Andrzej Siewior Subject: [PATCH 2/4] dma: cppi41: use cppi41_pop_desc() where possible Date: Tue, 22 Oct 2013 12:14:04 +0200 Message-Id: <1382436846-9057-3-git-send-email-bigeasy@linutronix.de> X-Mailer: git-send-email 1.8.4.rc3 In-Reply-To: <1382436846-9057-1-git-send-email-bigeasy@linutronix.de> References: <1382436846-9057-1-git-send-email-bigeasy@linutronix.de> X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001,URIBL_BLOCKED=0.001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Daniel Mack Use cppi41_pop_desc() when appropriate instead of open-coding the same functionality again. That makes the code more readable. The function has to be moved some lines up for this change. Signed-off-by: Daniel Mack Signed-off-by: Sebastian Andrzej Siewior --- drivers/dma/cppi41.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/drivers/dma/cppi41.c b/drivers/dma/cppi41.c index e53292d..42d1c58 100644 --- a/drivers/dma/cppi41.c +++ b/drivers/dma/cppi41.c @@ -266,6 +266,15 @@ static u32 pd_trans_len(u32 val) return val & ((1 << (DESC_LENGTH_BITS_NUM + 1)) - 1); } +static u32 cppi41_pop_desc(struct cppi41_dd *cdd, unsigned queue_num) +{ + u32 desc; + + desc = cppi_readl(cdd->qmgr_mem + QMGR_QUEUE_D(queue_num)); + desc &= ~0x1f; + return desc; +} + static irqreturn_t cppi41_irq(int irq, void *data) { struct cppi41_dd *cdd = data; @@ -303,8 +312,7 @@ static irqreturn_t cppi41_irq(int irq, void *data) q_num = __fls(val); val &= ~(1 << q_num); q_num += 32 * i; - desc = cppi_readl(cdd->qmgr_mem + QMGR_QUEUE_D(q_num)); - desc &= ~0x1f; + desc = cppi41_pop_desc(cdd, q_num); c = desc_to_chan(cdd, desc); if (WARN_ON(!c)) { pr_err("%s() q %d desc %08x\n", __func__, @@ -520,15 +528,6 @@ static void cppi41_compute_td_desc(struct cppi41_desc *d) d->pd0 = DESC_TYPE_TEARD << DESC_TYPE; } -static u32 cppi41_pop_desc(struct cppi41_dd *cdd, unsigned queue_num) -{ - u32 desc; - - desc = cppi_readl(cdd->qmgr_mem + QMGR_QUEUE_D(queue_num)); - desc &= ~0x1f; - return desc; -} - static int cppi41_tear_down_chan(struct cppi41_channel *c) { struct cppi41_dd *cdd = c->cdd; @@ -612,7 +611,7 @@ static int cppi41_tear_down_chan(struct cppi41_channel *c) WARN_ON(!c->td_retry); if (!c->td_desc_seen) { - desc_phys = cppi_readl(cdd->qmgr_mem + QMGR_QUEUE_D(c->q_num)); + desc_phys = cppi41_pop_desc(cdd, c->q_num); WARN_ON(!desc_phys); } -- 1.8.4.rc3