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: Paul Cercueil <paul@crapouillou.net>, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@linux-mips.org, Daniel Silsby <dansilsby@gmail.com> Subject: [v4,12/18] dmaengine: dma-jz4780: Simplify jz4780_dma_desc_residue() Date: Tue, 7 Aug 2018 13:42:12 +0200 [thread overview] Message-ID: <20180807114218.20091-13-paul@crapouillou.net> (raw) From: Daniel Silsby <dansilsby@gmail.com> Simple cleanup, no changes to actual logic here. Signed-off-by: Daniel Silsby <dansilsby@gmail.com> Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> --- drivers/dma/dma-jz4780.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) v2: No change v3: No change v4: Add my Signed-off-by diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c index a4292ac4c686..019cebc2e5e5 100644 --- a/drivers/dma/dma-jz4780.c +++ b/drivers/dma/dma-jz4780.c @@ -610,22 +610,17 @@ 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,
WARNING: multiple messages have this Message-ID (diff)
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: Paul Cercueil <paul@crapouillou.net>, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@linux-mips.org, Daniel Silsby <dansilsby@gmail.com> Subject: [PATCH v4 12/18] dmaengine: dma-jz4780: Simplify jz4780_dma_desc_residue() Date: Tue, 7 Aug 2018 13:42:12 +0200 [thread overview] Message-ID: <20180807114218.20091-13-paul@crapouillou.net> (raw) In-Reply-To: <20180807114218.20091-1-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> Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> --- drivers/dma/dma-jz4780.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) v2: No change v3: No change v4: Add my Signed-off-by diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c index a4292ac4c686..019cebc2e5e5 100644 --- a/drivers/dma/dma-jz4780.c +++ b/drivers/dma/dma-jz4780.c @@ -610,22 +610,17 @@ 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, -- 2.11.0
next reply other threads:[~2018-08-07 11:42 UTC|newest] Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-08-07 11:42 Paul Cercueil [this message] 2018-08-07 11:42 ` [PATCH v4 12/18] dmaengine: dma-jz4780: Simplify jz4780_dma_desc_residue() Paul Cercueil -- strict thread matches above, loose matches on Subject: below -- 2018-08-27 5:00 [v4,11/18] dmaengine: dma-jz4780: Add missing residue DTC mask Vinod Koul 2018-08-27 5:00 ` [PATCH v4 11/18] " Vinod 2018-08-07 15:01 [v4,01/18] doc: dt-bindings: jz4780-dma: Update bindings to reflect driver changes Rob Herring 2018-08-07 15:01 ` [PATCH v4 01/18] " Rob Herring 2018-08-07 11:42 [v4,18/18] MIPS: JZ4740: DTS: Add DMA nodes Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 18/18] " Paul Cercueil 2018-08-07 11:42 [v4,17/18] MIPS: JZ4770: " Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 17/18] " Paul Cercueil 2018-08-07 11:42 [v4,16/18] MIPS: JZ4780: DTS: Update DMA node to match driver changes Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 16/18] " Paul Cercueil 2018-08-07 11:42 [v4,15/18] dmaengine: dma-jz4780: Use dma_set_residue() Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 15/18] " Paul Cercueil 2018-08-07 11:42 [v4,14/18] dmaengine: dma-jz4780: Further residue status fix Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 14/18] " Paul Cercueil 2018-08-07 11:42 [v4,13/18] dmaengine: dma-jz4780: Set DTCn register explicitly Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 13/18] " Paul Cercueil 2018-08-07 11:42 [v4,11/18] dmaengine: dma-jz4780: Add missing residue DTC mask Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 11/18] " Paul Cercueil 2018-08-07 11:42 [v4,10/18] dmaengine: dma-jz4780: Enable Fast DMA to the AIC Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 10/18] " Paul Cercueil 2018-08-07 11:42 [v4,09/18] dmaengine: dma-jz4780: Add support for the JZ4725B SoC Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 09/18] " Paul Cercueil 2018-08-07 11:42 [v4,08/18] dmaengine: dma-jz4780: Add support for the JZ4740 SoC Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 08/18] " Paul Cercueil 2018-08-07 11:42 [v4,07/18] dmaengine: dma-jz4780: Add support for the JZ4770 SoC Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 07/18] " Paul Cercueil 2018-08-07 11:42 [v4,06/18] dmaengine: dma-jz4780: Don't depend on MACH_JZ4780 Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 06/18] " Paul Cercueil 2018-08-07 11:42 [v4,05/18] dmaengine: dma-jz4780: Use 4-word descriptors Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 05/18] " Paul Cercueil 2018-08-07 11:42 [v4,04/18] dmaengine: dma-jz4780: Separate chan/ctrl registers Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 04/18] " Paul Cercueil 2018-08-07 11:42 [v4,03/18] dmaengine: dma-jz4780: Avoid hardcoding number of channels Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 03/18] " Paul Cercueil 2018-08-07 11:42 [v4,02/18] dmaengine: dma-jz4780: Return error if not probed from DT Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 02/18] " Paul Cercueil 2018-08-07 11:42 [v4,01/18] doc: dt-bindings: jz4780-dma: Update bindings to reflect driver changes Paul Cercueil 2018-08-07 11:42 ` [PATCH v4 01/18] " Paul Cercueil 2018-08-07 11:42 [PATCH v4 00/18] JZ47xx DMA patchset v4 Paul Cercueil 2018-08-27 5:14 ` Vinod
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20180807114218.20091-13-paul@crapouillou.net \ --to=paul@crapouillou.net \ --cc=Zubair.Kakakhel@imgtec.com \ --cc=dansilsby@gmail.com \ --cc=devicetree@vger.kernel.org \ --cc=dmaengine@vger.kernel.org \ --cc=jhogan@kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-mips@linux-mips.org \ --cc=mark.rutland@arm.com \ --cc=paul.burton@mips.com \ --cc=ralf@linux-mips.org \ --cc=robh+dt@kernel.org \ --cc=vkoul@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.