From: Paul Cercueil <paul@crapouillou.net>
To: Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Ralf Baechle <ralf@linux-mips.org>,
Paul Burton <paul.burton@mips.com>,
James Hogan <jhogan@kernel.org>,
Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: Mathieu Malaterre <malat@debian.org>,
Daniel Silsby <dansilsby@gmail.com>,
dmaengine@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mips@linux-mips.org
Subject: [PATCH 09/14] dmaengine: dma-jz4780: Simplify jz4780_dma_desc_residue()
Date: Tue, 3 Jul 2018 14:32:09 +0200 [thread overview]
Message-ID: <20180703123214.23090-10-paul@crapouillou.net> (raw)
In-Reply-To: <20180703123214.23090-1-paul@crapouillou.net>
From: Daniel Silsby <dansilsby@gmail.com>
Simple cleanup, no changes to actual logic here.
Signed-off-by: Daniel Silsby <dansilsby@gmail.com>
---
drivers/dma/dma-jz4780.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)
diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c
index 7b2e305e28fb..adada2a3a067 100644
--- a/drivers/dma/dma-jz4780.c
+++ b/drivers/dma/dma-jz4780.c
@@ -604,22 +604,17 @@ static size_t jz4780_dma_desc_residue(struct jz4780_dma_chan *jzchan,
struct jz4780_dma_desc *desc, unsigned int next_sg)
{
struct jz4780_dma_dev *jzdma = jz4780_dma_chan_parent(jzchan);
- unsigned int residue, count;
+ unsigned int count = 0;
unsigned int i;
- residue = 0;
-
for (i = next_sg; i < desc->count; i++)
- residue += (desc->desc[i].dtc & 0xffffff) <<
- jzchan->transfer_shift;
+ count += desc->desc[i].dtc & 0xffffff;
- if (next_sg != 0) {
- count = jz4780_dma_chn_readl(jzdma, jzchan->id,
+ if (next_sg != 0)
+ count += jz4780_dma_chn_readl(jzdma, jzchan->id,
JZ_DMA_REG_DTC);
- residue += count << jzchan->transfer_shift;
- }
- return residue;
+ return count << jzchan->transfer_shift;
}
static enum dma_status jz4780_dma_tx_status(struct dma_chan *chan,
--
2.18.0
next prev parent reply other threads:[~2018-07-03 12:33 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-03 12:32 [PATCH 00/14] dma-jz4780 improvements Paul Cercueil
2018-07-03 12:32 ` [PATCH 01/14] dmaengine: dma-jz4780: Avoid hardcoding number of channels Paul Cercueil
2018-07-04 16:28 ` PrasannaKumar Muralidharan
2018-07-05 18:26 ` Paul Cercueil
2018-07-07 7:34 ` PrasannaKumar Muralidharan
2018-07-07 11:01 ` Paul Cercueil
2018-07-09 16:59 ` Vinod
[not found] ` <1531236550.17118.0@crapouillou.net>
2018-07-11 12:14 ` Vinod
2018-07-03 12:32 ` [PATCH 02/14] dmaengine: dma-jz4780: Separate chan/ctrl registers Paul Cercueil
2018-07-03 16:53 ` Paul Burton
2018-07-05 18:23 ` Paul Cercueil
2018-07-04 16:35 ` PrasannaKumar Muralidharan
2018-07-05 21:45 ` Paul Cercueil
2018-07-07 7:27 ` PrasannaKumar Muralidharan
2018-07-09 17:03 ` Vinod
2018-07-10 15:36 ` Paul Cercueil
2018-07-11 12:16 ` Vinod
2018-07-11 23:13 ` Paul Cercueil
2018-07-11 23:27 ` Paul Burton
2018-07-16 21:28 ` Rob Herring
2018-07-03 12:32 ` [PATCH 03/14] dmaengine: dma-jz4780: Use 4-word descriptors Paul Cercueil
2018-07-04 16:40 ` PrasannaKumar Muralidharan
2018-07-03 12:32 ` [PATCH 04/14] dmaengine: dma-jz4780: Add support for the JZ4770 SoC Paul Cercueil
2018-07-09 17:10 ` Vinod
2018-07-10 15:41 ` Paul Cercueil
2018-07-03 12:32 ` [PATCH 05/14] dmaengine: dma-jz4780: Add support for the JZ4740 SoC Paul Cercueil
2018-07-04 16:52 ` PrasannaKumar Muralidharan
2018-07-09 17:12 ` Vinod
2018-07-16 21:33 ` Rob Herring
2018-07-17 11:00 ` Paul Cercueil
2018-07-17 15:34 ` Vinod
2018-07-17 17:40 ` Rob Herring
2018-07-18 5:27 ` Vinod
2018-07-03 12:32 ` [PATCH 06/14] dmaengine: dma-jz4780: Add support for the JZ4725B SoC Paul Cercueil
2018-07-04 16:55 ` PrasannaKumar Muralidharan
2018-07-09 17:14 ` Vinod
2018-07-10 15:45 ` Paul Cercueil
2018-07-11 12:18 ` Vinod
2018-07-11 23:13 ` Paul Cercueil
2018-07-03 12:32 ` [PATCH 07/14] dmaengine: dma-jz4780: Enable Fast DMA to the AIC Paul Cercueil
2018-07-04 17:00 ` PrasannaKumar Muralidharan
2018-07-03 12:32 ` [PATCH 08/14] dmaengine: dma-jz4780: Add missing residue DTC mask Paul Cercueil
2018-07-03 12:32 ` Paul Cercueil [this message]
2018-07-03 12:32 ` [PATCH 10/14] dmaengine: dma-jz4780: Set DTCn register explicitly Paul Cercueil
2018-07-03 12:32 ` [PATCH 11/14] dmaengine: dma-jz4780: Further residue status fix Paul Cercueil
2018-07-03 12:32 ` [PATCH 12/14] dmaengine: dma-jz4780: Use dma_set_residue() Paul Cercueil
2018-07-03 12:32 ` [PATCH 13/14] MIPS: JZ4780: DTS: Update DMA node to match driver changes Paul Cercueil
2018-07-03 12:32 ` [PATCH 14/14] MIPS: JZ4770: DTS: Add DMA nodes Paul Cercueil
2018-07-03 19:32 ` [PATCH 00/14] dma-jz4780 improvements Mathieu Malaterre
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