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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Bjorn Andersson <andersson@kernel.org>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Stefan Wahren <wahrenst@gmx.net>, Vinod Koul <vkoul@kernel.org>,
	Thomas Andreatta <thomasandreatta2000@gmail.com>,
	Caleb Sander Mateos <csander@purestorage.com>,
	dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-rpi-kernel@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-arm-msm@vger.kernel.org
Cc: Olivier Dautricourt <olivierdautricourt@gmail.com>,
	Stefan Roese <sr@denx.de>,
	Florian Fainelli <florian.fainelli@broadcom.com>,
	Ray Jui <rjui@broadcom.com>,
	Scott Branden <sbranden@broadcom.com>,
	Broadcom internal kernel review list
	<bcm-kernel-feedback-list@broadcom.com>,
	Lars-Peter Clausen <lars@metafoo.de>,
	Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>,
	Daniel Mack <daniel@zonque.org>,
	Haojian Zhuang <haojian.zhuang@gmail.com>,
	Robert Jarzmik <robert.jarzmik@free.fr>,
	Lizhi Hou <lizhi.hou@amd.com>, Brian Xu <brian.xu@amd.com>,
	Raj Kumar Rampelli <raj.kumar.rampelli@amd.com>,
	Michal Simek <michal.simek@amd.com>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH v4 04/13] dmaengine: bcm2835-dma: use sg_nents_for_dma() helper
Date: Mon, 24 Nov 2025 13:09:22 +0100	[thread overview]
Message-ID: <20251124121202.424072-5-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20251124121202.424072-1-andriy.shevchenko@linux.intel.com>

Instead of open coded variant let's use recently introduced helper.

Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/dma/bcm2835-dma.c | 19 +------------------
 1 file changed, 1 insertion(+), 18 deletions(-)

diff --git a/drivers/dma/bcm2835-dma.c b/drivers/dma/bcm2835-dma.c
index 0117bb2e8591..802b23be2fd8 100644
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -260,23 +260,6 @@ static void bcm2835_dma_create_cb_set_length(
 	control_block->info |= finalextrainfo;
 }
 
-static inline size_t bcm2835_dma_count_frames_for_sg(
-	struct bcm2835_chan *c,
-	struct scatterlist *sgl,
-	unsigned int sg_len)
-{
-	size_t frames = 0;
-	struct scatterlist *sgent;
-	unsigned int i;
-	size_t plength = bcm2835_dma_max_frame_length(c);
-
-	for_each_sg(sgl, sgent, sg_len, i)
-		frames += bcm2835_dma_frames_for_length(
-			sg_dma_len(sgent), plength);
-
-	return frames;
-}
-
 /**
  * bcm2835_dma_create_cb_chain - create a control block and fills data in
  *
@@ -672,7 +655,7 @@ static struct dma_async_tx_descriptor *bcm2835_dma_prep_slave_sg(
 	}
 
 	/* count frames in sg list */
-	frames = bcm2835_dma_count_frames_for_sg(c, sgl, sg_len);
+	frames = sg_nents_for_dma(sgl, sg_len, bcm2835_dma_max_frame_length(c));
 
 	/* allocate the CB chain */
 	d = bcm2835_dma_create_cb_chain(chan, direction, false,
-- 
2.50.1


  parent reply	other threads:[~2025-11-24 12:12 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-24 12:09 [PATCH v4 0/13] dmaengine: introduce sg_nents_for_dma() and convert users Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 01/13] scatterlist: introduce sg_nents_for_dma() helper Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 02/13] dmaengine: altera-msgdma: use " Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 03/13] dmaengine: axi-dmac: " Andy Shevchenko
2025-11-24 12:09 ` Andy Shevchenko [this message]
2025-11-24 12:09 ` [PATCH v4 05/13] dmaengine: dw-axi-dmac: " Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 06/13] dmaengine: k3dma: " Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 07/13] dmaengine: lgm: " Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 08/13] dmaengine: pxa-dma: " Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 09/13] dmaengine: qcom: adm: " Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 10/13] dmaengine: qcom: bam_dma: " Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 11/13] dmaengine: sa11x0: " Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 12/13] dmaengine: sh: " Andy Shevchenko
2025-11-24 12:09 ` [PATCH v4 13/13] dmaengine: xilinx: xdma: " Andy Shevchenko
2025-12-16 13:11 ` [PATCH v4 0/13] dmaengine: introduce sg_nents_for_dma() and convert users Vinod Koul
2026-01-08  6:46   ` Andy Shevchenko
2026-01-09  2:17     ` Vinod Koul
2026-01-09  3:14 ` Vinod Koul

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