[PATCH 1/2] dmaengine: use dma_chan_name() helper to get per-channel device name
From: Frank . Li
Date: Wed Aug 12 2026 - 17:25:02 EST
From: Frank Li <Frank.Li@xxxxxxx>
Use the existing dma_chan_name() helper to obtain the per-channel device
name instead of open-coding: dev_name(chan->dev->device) /
dev_name(chan2dev())
Simplify the code and improve consistency.
No functional change intended.
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
drivers/dma/arm-dma350.c | 2 +-
drivers/dma/dma-jz4780.c | 2 +-
drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 2 +-
drivers/dma/idma64.c | 2 +-
drivers/dma/loongson/loongson2-apb-cmc-dma.c | 2 +-
drivers/dma/loongson/loongson2-apb-dma.c | 2 +-
drivers/dma/mmp_pdma.c | 2 +-
drivers/dma/st_fdma.c | 2 +-
drivers/dma/stm32/stm32-dma.c | 2 +-
drivers/dma/stm32/stm32-dma3.c | 6 +++---
drivers/dma/stm32/stm32-mdma.c | 2 +-
include/trace/events/tegra_apb_dma.h | 6 +++---
12 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/drivers/dma/arm-dma350.c b/drivers/dma/arm-dma350.c
index 09403aca8bb06..89673a5fca304 100644
--- a/drivers/dma/arm-dma350.c
+++ b/drivers/dma/arm-dma350.c
@@ -512,7 +512,7 @@ static int d350_alloc_chan_resources(struct dma_chan *chan)
{
struct d350_chan *dch = to_d350_chan(chan);
int ret = request_irq(dch->irq, d350_irq, IRQF_SHARED,
- dev_name(&dch->vc.chan.dev->device), dch);
+ dma_chan_name(&dch->vc.chan), dch);
if (!ret)
writel_relaxed(CH_INTREN_DONE | CH_INTREN_ERR, dch->base + CH_INTREN);
diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c
index 6070dfdb7114c..194649811d02b 100644
--- a/drivers/dma/dma-jz4780.c
+++ b/drivers/dma/dma-jz4780.c
@@ -760,7 +760,7 @@ static int jz4780_dma_alloc_chan_resources(struct dma_chan *chan)
{
struct jz4780_dma_chan *jzchan = to_jz4780_dma_chan(chan);
- jzchan->desc_pool = dma_pool_create(dev_name(&chan->dev->device),
+ jzchan->desc_pool = dma_pool_create(dma_chan_name(chan),
chan->device->dev,
JZ_DMA_DESC_BLOCK_SIZE,
PAGE_SIZE, 0);
diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
index eebed2474210d..d24902374f742 100644
--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
@@ -531,7 +531,7 @@ static int dma_chan_alloc_chan_resources(struct dma_chan *dchan)
}
/* LLI address must be aligned to a 64-byte boundary */
- chan->desc_pool = dma_pool_create(dev_name(chan2dev(chan)),
+ chan->desc_pool = dma_pool_create(dma_chan_name(dchan),
chan->chip->dev,
sizeof(struct axi_dma_lli),
64, 0);
diff --git a/drivers/dma/idma64.c b/drivers/dma/idma64.c
index 5fcd1befc92da..6399fd5408be2 100644
--- a/drivers/dma/idma64.c
+++ b/drivers/dma/idma64.c
@@ -507,7 +507,7 @@ static int idma64_alloc_chan_resources(struct dma_chan *chan)
struct idma64_chan *idma64c = to_idma64_chan(chan);
/* Create a pool of consistent memory blocks for hardware descriptors */
- idma64c->pool = dma_pool_create(dev_name(chan2dev(chan)),
+ idma64c->pool = dma_pool_create(dma_chan_name(chan),
chan->device->dev,
sizeof(struct idma64_lli), 8, 0);
if (!idma64c->pool) {
diff --git a/drivers/dma/loongson/loongson2-apb-cmc-dma.c b/drivers/dma/loongson/loongson2-apb-cmc-dma.c
index 1c9a542edc859..f53f24b7f8ffe 100644
--- a/drivers/dma/loongson/loongson2-apb-cmc-dma.c
+++ b/drivers/dma/loongson/loongson2-apb-cmc-dma.c
@@ -678,7 +678,7 @@ static int loongson2_cmc_dma_probe(struct platform_device *pdev)
return lchan->irq;
ret = devm_request_irq(dev, lchan->irq, loongson2_cmc_dma_chan_irq, IRQF_SHARED,
- dev_name(chan2dev(lchan)), lchan);
+ dma_chan_name(&lchan->vchan.chan), lchan);
if (ret)
return ret;
}
diff --git a/drivers/dma/loongson/loongson2-apb-dma.c b/drivers/dma/loongson/loongson2-apb-dma.c
index aceb069e71fca..7c3d7c3273955 100644
--- a/drivers/dma/loongson/loongson2-apb-dma.c
+++ b/drivers/dma/loongson/loongson2-apb-dma.c
@@ -282,7 +282,7 @@ static int ls2x_dma_alloc_chan_resources(struct dma_chan *chan)
struct ls2x_dma_chan *lchan = to_ldma_chan(chan);
/* Create a pool of consistent memory blocks for hardware descriptors */
- lchan->pool = dma_pool_create(dev_name(chan2dev(chan)),
+ lchan->pool = dma_pool_create(dma_chan_name(chan),
chan->device->dev, PAGE_SIZE,
__alignof__(struct ls2x_dma_hw_desc), 0);
if (!lchan->pool) {
diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c
index 386e85cd4882a..6b29e15b0616c 100644
--- a/drivers/dma/mmp_pdma.c
+++ b/drivers/dma/mmp_pdma.c
@@ -565,7 +565,7 @@ static int mmp_pdma_alloc_chan_resources(struct dma_chan *dchan)
if (chan->desc_pool)
return 1;
- chan->desc_pool = dma_pool_create(dev_name(&dchan->dev->device),
+ chan->desc_pool = dma_pool_create(dma_chan_name(dchan),
chan->dev,
sizeof(struct mmp_pdma_desc_sw),
__alignof__(struct mmp_pdma_desc_sw),
diff --git a/drivers/dma/st_fdma.c b/drivers/dma/st_fdma.c
index d9547017f3bd6..35dbff5f9f1ab 100644
--- a/drivers/dma/st_fdma.c
+++ b/drivers/dma/st_fdma.c
@@ -268,7 +268,7 @@ static int st_fdma_alloc_chan_res(struct dma_chan *chan)
struct st_fdma_chan *fchan = to_st_fdma_chan(chan);
/* Create the dma pool for descriptor allocation */
- fchan->node_pool = dma_pool_create(dev_name(&chan->dev->device),
+ fchan->node_pool = dma_pool_create(dma_chan_name(chan),
fchan->fdev->dev,
sizeof(struct st_fdma_hw_node),
__alignof__(struct st_fdma_hw_node),
diff --git a/drivers/dma/stm32/stm32-dma.c b/drivers/dma/stm32/stm32-dma.c
index d3ad78562a140..4e3ecb6763036 100644
--- a/drivers/dma/stm32/stm32-dma.c
+++ b/drivers/dma/stm32/stm32-dma.c
@@ -1668,7 +1668,7 @@ static int stm32_dma_probe(struct platform_device *pdev)
ret = devm_request_irq(&pdev->dev, chan->irq,
stm32_dma_chan_irq, 0,
- dev_name(chan2dev(chan)), chan);
+ dma_chan_name(&chan->vchan.chan), chan);
if (ret) {
dev_err(&pdev->dev,
"request_irq failed with err %d channel %d\n",
diff --git a/drivers/dma/stm32/stm32-dma3.c b/drivers/dma/stm32/stm32-dma3.c
index 4724e7fa0008e..ab0fb05597363 100644
--- a/drivers/dma/stm32/stm32-dma3.c
+++ b/drivers/dma/stm32/stm32-dma3.c
@@ -1126,7 +1126,7 @@ static int stm32_dma3_alloc_chan_resources(struct dma_chan *c)
goto err_put_sync;
}
- chan->lli_pool = dmam_pool_create(dev_name(&c->dev->device), c->device->dev,
+ chan->lli_pool = dmam_pool_create(dma_chan_name(c), c->device->dev,
sizeof(struct stm32_dma3_hwdesc),
__alignof__(struct stm32_dma3_hwdesc), SZ_64K);
if (!chan->lli_pool) {
@@ -1892,10 +1892,10 @@ static int stm32_dma3_probe(struct platform_device *pdev)
chan->irq = ret;
ret = devm_request_irq(&pdev->dev, chan->irq, stm32_dma3_chan_irq, 0,
- dev_name(chan2dev(chan)), chan);
+ dma_chan_name(&chan->vchan.chan), chan);
if (ret) {
dev_err_probe(&pdev->dev, ret, "Failed to request channel %s IRQ\n",
- dev_name(chan2dev(chan)));
+ dma_chan_name(&chan->vchan.chan));
goto err_clk_disable;
}
}
diff --git a/drivers/dma/stm32/stm32-mdma.c b/drivers/dma/stm32/stm32-mdma.c
index e3bbdc9ee36ed..c274638e919c2 100644
--- a/drivers/dma/stm32/stm32-mdma.c
+++ b/drivers/dma/stm32/stm32-mdma.c
@@ -1484,7 +1484,7 @@ static int stm32_mdma_alloc_chan_resources(struct dma_chan *c)
struct stm32_mdma_device *dmadev = stm32_mdma_get_dev(chan);
int ret;
- chan->desc_pool = dmam_pool_create(dev_name(&c->dev->device),
+ chan->desc_pool = dmam_pool_create(dma_chan_name(c),
c->device->dev,
sizeof(struct stm32_mdma_hwdesc),
__alignof__(struct stm32_mdma_hwdesc),
diff --git a/include/trace/events/tegra_apb_dma.h b/include/trace/events/tegra_apb_dma.h
index 6d9f5075baa3e..c38117c127ef3 100644
--- a/include/trace/events/tegra_apb_dma.h
+++ b/include/trace/events/tegra_apb_dma.h
@@ -11,7 +11,7 @@ TRACE_EVENT(tegra_dma_tx_status,
TP_PROTO(struct dma_chan *dc, dma_cookie_t cookie, struct dma_tx_state *state),
TP_ARGS(dc, cookie, state),
TP_STRUCT__entry(
- __string(chan, dev_name(&dc->dev->device))
+ __string(chan, dma_chan_name(dc))
__field(dma_cookie_t, cookie)
__field(__u32, residue)
),
@@ -28,7 +28,7 @@ TRACE_EVENT(tegra_dma_complete_cb,
TP_PROTO(struct dma_chan *dc, int count, void *ptr),
TP_ARGS(dc, count, ptr),
TP_STRUCT__entry(
- __string(chan, dev_name(&dc->dev->device))
+ __string(chan, dma_chan_name(dc))
__field(int, count)
__field(void *, ptr)
),
@@ -45,7 +45,7 @@ TRACE_EVENT(tegra_dma_isr,
TP_PROTO(struct dma_chan *dc, int irq),
TP_ARGS(dc, irq),
TP_STRUCT__entry(
- __string(chan, dev_name(&dc->dev->device))
+ __string(chan, dma_chan_name(dc))
__field(int, irq)
),
TP_fast_assign(
--
2.43.0