[PATCH 05/10] dmaengine: fsldma: convert ioremap to devm_platform_ioremap_resource
From: Rosen Penev <hidden>
Date: 2026-06-05 22:02:01
Also in:
dmaengine, lkml, llvm
Subsystem:
dma generic offload engine subsystem, freescale dma driver, the rest · Maintainers:
Vinod Koul, Zhang Wei, Linus Torvalds
Convert of_iomap to devm_platform_ioremap_resource to let the devm framework handle unmapping. This allows removing the out_iounmap label, out_return label, and the explicit iounmap in both the probe error path and the remove function. The DGSR (fdev->regs) and per-channel registers (chan->regs) map physically distinct regions in all supported variants (EloPlus/Elo/Elo3), so there is no overlap risk. Assisted-by: opencode:big-pickle Signed-off-by: Rosen Penev <redacted> --- drivers/dma/fsldma.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-)
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 2efa16d12679..2a6a247761a4 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c@@ -1229,19 +1229,17 @@ static int fsldma_of_probe(struct platform_device *op) fdev->addr_bits = (long)device_get_match_data(fdev->dev); /* ioremap the registers for use */ - fdev->regs = of_iomap(op->dev.of_node, 0); - if (!fdev->regs) { + fdev->regs = devm_platform_ioremap_resource(op, 0); + if (IS_ERR(fdev->regs)) { dev_err(&op->dev, "unable to ioremap registers\n"); - return -ENOMEM; + return PTR_ERR(fdev->regs); } /* map the channel IRQ if it exists, but don't hookup the handler yet */ fdev->irq = platform_get_irq_optional(op, 0); if (fdev->irq < 0) { - if (fdev->irq != -ENXIO) { - err = fdev->irq; - goto out_iounmap; - } + if (fdev->irq != -ENXIO) + return fdev->irq; fdev->irq = 0; }
@@ -1309,8 +1307,6 @@ static int fsldma_of_probe(struct platform_device *op) if (fdev->chan[i]) fsl_dma_chan_remove(fdev->chan[i]); } -out_iounmap: - iounmap(fdev->regs); return err; }
@@ -1328,8 +1324,6 @@ static void fsldma_of_remove(struct platform_device *op) if (fdev->chan[i]) fsl_dma_chan_remove(fdev->chan[i]); } - - iounmap(fdev->regs); } #ifdef CONFIG_PM
--
2.54.0