[PATCH 1/2] dmaengine: use dma_chan_name() helper to get per-channel device name
From: <hidden>
Date: 2026-08-12 21:24:31
Also in:
dmaengine, imx, linux-arm-kernel, linux-mips, linux-sunxi, linux-tegra, lkml
Subsystem:
arm/nuvoton ma35 architecture, arm/sti architecture, dma generic offload engine subsystem, ingenic jz47xx socs, intel lpss (low power subsystem) drivers, loongson-2 dma driver, stm32 dma drivers, synopsys designware axi dmac driver, the rest, tracing · Maintainers:
Jacky Huang, Shan-Chun Hung, Patrice Chotard, Vinod Koul, Paul Cercueil, Binbin Zhou, Amélie Delaunay, Eugeniy Paltsev, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
From: Frank Li <Frank.Li@nxp.com> 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@nxp.com> --- 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(
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2.43.0