From: Vinod Koul <vkoul@kernel.org>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Bjorn Andersson <andersson@kernel.org>,
Stefan Wahren <wahrenst@gmx.net>,
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,
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: Re: [PATCH v4 0/13] dmaengine: introduce sg_nents_for_dma() and convert users
Date: Tue, 16 Dec 2025 18:41:44 +0530 [thread overview]
Message-ID: <aUFakHZL8viMN3WR@vaman> (raw)
In-Reply-To: <20251124121202.424072-1-andriy.shevchenko@linux.intel.com>
On 24-11-25, 13:09, Andy Shevchenko wrote:
> A handful of the DMAengine drivers use same routine to calculate the number of
> SG entries needed for the given DMA transfer. Provide a common helper for them
> and convert.
>
> I left the new helper on SG level of API because brief grepping shows potential
> candidates outside of DMA engine, e.g.:
>
> drivers/crypto/chelsio/chcr_algo.c:154: nents += DIV_ROUND_UP(less, entlen);
> drivers/spi/spi-stm32.c:1495: /* Count the number of entries needed */
>
> Changelog v4:
> - fixed compilation errors (Vinod)
:-(
drivers/dma/altera-msgdma.c: In function ‘msgdma_prep_slave_sg’:
drivers/dma/altera-msgdma.c:399:29: error: unused variable ‘sg’ [-Werror=unused-variable]
Clearly your script is not working. I am surprised that you are not able
to compile these changes. Bit disappointed tbh!
--
~Vinod
next prev parent reply other threads:[~2025-12-16 13:11 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 ` [PATCH v4 04/13] dmaengine: bcm2835-dma: " Andy Shevchenko
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 ` Vinod Koul [this message]
2026-01-08 6:46 ` [PATCH v4 0/13] dmaengine: introduce sg_nents_for_dma() and convert users Andy Shevchenko
2026-01-09 2:17 ` Vinod Koul
2026-01-09 3:14 ` Vinod Koul
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