From: Frank.Li@oss.nxp.com
To: "Eugen Hristev" <ehristev@kernel.org>,
"Jonathan Cameron" <jic23@kernel.org>,
"David Lechner" <dlechner@baylibre.com>,
"Nuno Sá" <nuno.sa@analog.com>,
"Andy Shevchenko" <andy@kernel.org>,
"Nicolas Ferre" <nicolas.ferre@microchip.com>,
"Alexandre Belloni" <alexandre.belloni@bootlin.com>,
"Claudiu Beznea" <claudiu.beznea@tuxon.dev>,
"Cosmin Tanislav" <cosmin-gabriel.tanislav.xa@renesas.com>,
"Maxime Coquelin" <mcoquelin.stm32@gmail.com>,
"Alexandre Torgue" <alexandre.torgue@foss.st.com>,
"Daniel Lezcano" <daniel.lezcano@kernel.org>,
"Stepan Ionichev" <sozdayvek@gmail.com>,
"Felix Gu" <ustc.gu@gmail.com>, "Frank Li" <Frank.Li@nxp.com>,
"Uwe Kleine-König (The Capable Hub)"
<u.kleine-koenig@baylibre.com>,
"Shuvam Pandey" <shuvampandey1@gmail.com>,
"Piyush Patle" <piyushpatle228@gmail.com>,
"Fabrice Gasnier" <fabrice.gasnier@foss.st.com>,
"Cheick Traore" <cheick.traore-ext@st.com>,
"Giorgi Tchankvetadze" <giorgitchankvetadze1997@gmail.com>,
"Vinod Koul" <vkoul@kernel.org>,
"Rob Herring (Arm)" <robh@kernel.org>,
"Shi Hao" <i.shihao.999@gmail.com>,
"Kees Cook" <kees+treewide@kernel.org>,
"Michael Hennerich" <michael.hennerich@analog.com>,
linux-iio@vger.kernel.org (open list:MICROCHIP
SAMA5D2-COMPATIBLE ADC DRIVER),
linux-arm-kernel@lists.infradead.org (moderated
list:ARM/Microchip (AT91) SoC support),
linux-kernel@vger.kernel.org (open list),
linux-renesas-soc@vger.kernel.org (open list:RENESAS RZ/T2H /
RZ/N2H A/D DRIVER),
linux-stm32@st-md-mailman.stormreply.com (moderated
list:ARM/STM32 ARCHITECTURE)
Cc: imx@lists.linux.dev
Subject: [PATCH 1/1] iio: use dmaengine_desc_set_callback()
Date: Mon, 2 Nov 2026 12:08:47 -0500 [thread overview]
Message-ID: <20261102170911.3867389-1-Frank.Li@oss.nxp.com> (raw)
From: Frank Li <Frank.Li@nxp.com>
Replace open-coded assignments to callback and callback_param fields
of struct dma_async_tx_descriptor with calls to the
dmaengine_desc_set_callback() helper.
No functional change intended. Prepare make to struct
dma_async_tx_descriptor private to the DMA engine.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
drivers/iio/adc/at91-sama5d2_adc.c | 3 +--
drivers/iio/adc/nxp-sar-adc.c | 3 +--
drivers/iio/adc/rzt2h_adc.c | 3 +--
drivers/iio/adc/stm32-adc.c | 3 +--
drivers/iio/adc/stm32-dfsdm-adc.c | 3 +--
drivers/iio/adc/ti_am335x_adc.c | 3 +--
drivers/iio/buffer/industrialio-buffer-dmaengine.c | 3 +--
7 files changed, 7 insertions(+), 14 deletions(-)
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 78081cbfde5e8..d479c9bc9b3e8 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -1240,8 +1240,7 @@ static int at91_adc_dma_start(struct iio_dev *indio_dev)
return -EBUSY;
}
- desc->callback = at91_dma_buffer_done;
- desc->callback_param = indio_dev;
+ dmaengine_desc_set_callback(desc, at91_dma_buffer_done, NULL, indio_dev);
cookie = dmaengine_submit(desc);
ret = dma_submit_error(cookie);
diff --git a/drivers/iio/adc/nxp-sar-adc.c b/drivers/iio/adc/nxp-sar-adc.c
index 2f716a2f97b80..82d8d921b0293 100644
--- a/drivers/iio/adc/nxp-sar-adc.c
+++ b/drivers/iio/adc/nxp-sar-adc.c
@@ -696,8 +696,7 @@ static int nxp_sar_adc_start_cyclic_dma(struct iio_dev *indio_dev)
if (!desc)
return -EINVAL;
- desc->callback = nxp_sar_adc_dma_cb;
- desc->callback_param = indio_dev;
+ dmaengine_desc_set_callback(desc, nxp_sar_adc_dma_cb, NULL, indio_dev);
info->cookie = dmaengine_submit(desc);
ret = dma_submit_error(info->cookie);
if (ret) {
diff --git a/drivers/iio/adc/rzt2h_adc.c b/drivers/iio/adc/rzt2h_adc.c
index 8ba7b0fde8a19..3e52b7d660dd3 100644
--- a/drivers/iio/adc/rzt2h_adc.c
+++ b/drivers/iio/adc/rzt2h_adc.c
@@ -394,8 +394,7 @@ static int rzt2h_adc_start_dma(struct iio_dev *indio_dev)
if (!desc)
return -EBUSY;
- desc->callback = rzt2h_adc_dma_callback;
- desc->callback_param = indio_dev;
+ dmaengine_desc_set_callback(desc, rzt2h_adc_dma_callback, NULL, indio_dev);
cookie = dmaengine_submit(desc);
ret = dma_submit_error(cookie);
diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
index 600f975f1d7b5..fa2a781e37777 100644
--- a/drivers/iio/adc/stm32-adc.c
+++ b/drivers/iio/adc/stm32-adc.c
@@ -1901,8 +1901,7 @@ static int stm32_adc_dma_start(struct iio_dev *indio_dev)
if (!desc)
return -EBUSY;
- desc->callback = stm32_adc_dma_buffer_done;
- desc->callback_param = indio_dev;
+ dmaengine_desc_set_callback(desc, stm32_adc_dma_buffer_done, NULL, indio_dev);
cookie = dmaengine_submit(desc);
ret = dma_submit_error(cookie);
diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c
index 674767da3ac37..f0239f5f30afe 100644
--- a/drivers/iio/adc/stm32-dfsdm-adc.c
+++ b/drivers/iio/adc/stm32-dfsdm-adc.c
@@ -1006,8 +1006,7 @@ static int stm32_dfsdm_adc_dma_start(struct iio_dev *indio_dev)
if (!desc)
return -EBUSY;
- desc->callback = stm32_dfsdm_dma_buffer_done;
- desc->callback_param = indio_dev;
+ dmaengine_desc_set_callback(desc, stm32_dfsdm_dma_buffer_done, NULL, indio_dev);
cookie = dmaengine_submit(desc);
ret = dma_submit_error(cookie);
diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index e53c839e87ef3..230f1c990317a 100644
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c
@@ -259,8 +259,7 @@ static int tiadc_start_dma(struct iio_dev *indio_dev)
if (!desc)
return -EBUSY;
- desc->callback = tiadc_dma_rx_complete;
- desc->callback_param = indio_dev;
+ dmaengine_desc_set_callback(desc, tiadc_dma_rx_complete, NULL, indio_dev);
dma->cookie = dmaengine_submit(desc);
diff --git a/drivers/iio/buffer/industrialio-buffer-dmaengine.c b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
index b9f8b5b3aa6b6..7ecb9d875b8e8 100644
--- a/drivers/iio/buffer/industrialio-buffer-dmaengine.c
+++ b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
@@ -160,8 +160,7 @@ static int iio_dmaengine_buffer_submit_block(struct iio_dma_buffer_queue *queue,
return -ENOMEM;
if (!block->cyclic) {
- desc->callback_result = iio_dmaengine_buffer_block_done;
- desc->callback_param = block;
+ dmaengine_desc_set_callback(desc, NULL, iio_dmaengine_buffer_block_done, block);
}
cookie = dmaengine_submit(desc);
--
2.43.0
reply other threads:[~2026-11-02 17:09 UTC|newest]
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