From 638a9e433ecd61e64761352dbec1fa4f5874c941 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 7 Aug 2024 15:18:06 +0200 Subject: Merging upstream version 6.10.3. Signed-off-by: Daniel Baumann --- drivers/dma/dma-axi-dmac.c | 78 ++++++++++++++++++++-------------------------- 1 file changed, 34 insertions(+), 44 deletions(-) (limited to 'drivers/dma/dma-axi-dmac.c') diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index d5a33e4a91..bdb752f118 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -1002,6 +1002,16 @@ static int axi_dmac_detect_caps(struct axi_dmac *dmac, unsigned int version) return 0; } +static void axi_dmac_tasklet_kill(void *task) +{ + tasklet_kill(task); +} + +static void axi_dmac_free_dma_controller(void *of_node) +{ + of_dma_controller_free(of_node); +} + static int axi_dmac_probe(struct platform_device *pdev) { struct dma_device *dma_dev; @@ -1025,14 +1035,10 @@ static int axi_dmac_probe(struct platform_device *pdev) if (IS_ERR(dmac->base)) return PTR_ERR(dmac->base); - dmac->clk = devm_clk_get(&pdev->dev, NULL); + dmac->clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(dmac->clk)) return PTR_ERR(dmac->clk); - ret = clk_prepare_enable(dmac->clk); - if (ret < 0) - return ret; - version = axi_dmac_read(dmac, ADI_AXI_REG_VERSION); if (version >= ADI_AXI_PCORE_VER(4, 3, 'a')) @@ -1041,7 +1047,7 @@ static int axi_dmac_probe(struct platform_device *pdev) ret = axi_dmac_parse_dt(&pdev->dev, dmac); if (ret < 0) - goto err_clk_disable; + return ret; INIT_LIST_HEAD(&dmac->chan.active_descs); @@ -1072,7 +1078,7 @@ static int axi_dmac_probe(struct platform_device *pdev) ret = axi_dmac_detect_caps(dmac, version); if (ret) - goto err_clk_disable; + return ret; dma_dev->copy_align = (dmac->chan.address_align_mask + 1); @@ -1088,57 +1094,42 @@ static int axi_dmac_probe(struct platform_device *pdev) !AXI_DMAC_DST_COHERENT_GET(ret)) { dev_err(dmac->dma_dev.dev, "Coherent DMA not supported in hardware"); - ret = -EINVAL; - goto err_clk_disable; + return -EINVAL; } } - ret = dma_async_device_register(dma_dev); + ret = dmaenginem_async_device_register(dma_dev); + if (ret) + return ret; + + /* + * Put the action in here so it get's done before unregistering the DMA + * device. + */ + ret = devm_add_action_or_reset(&pdev->dev, axi_dmac_tasklet_kill, + &dmac->chan.vchan.task); if (ret) - goto err_clk_disable; + return ret; ret = of_dma_controller_register(pdev->dev.of_node, of_dma_xlate_by_chan_id, dma_dev); if (ret) - goto err_unregister_device; + return ret; - ret = request_irq(dmac->irq, axi_dmac_interrupt_handler, IRQF_SHARED, - dev_name(&pdev->dev), dmac); + ret = devm_add_action_or_reset(&pdev->dev, axi_dmac_free_dma_controller, + pdev->dev.of_node); if (ret) - goto err_unregister_of; + return ret; - platform_set_drvdata(pdev, dmac); + ret = devm_request_irq(&pdev->dev, dmac->irq, axi_dmac_interrupt_handler, + IRQF_SHARED, dev_name(&pdev->dev), dmac); + if (ret) + return ret; regmap = devm_regmap_init_mmio(&pdev->dev, dmac->base, &axi_dmac_regmap_config); - if (IS_ERR(regmap)) { - ret = PTR_ERR(regmap); - goto err_free_irq; - } - - return 0; - -err_free_irq: - free_irq(dmac->irq, dmac); -err_unregister_of: - of_dma_controller_free(pdev->dev.of_node); -err_unregister_device: - dma_async_device_unregister(&dmac->dma_dev); -err_clk_disable: - clk_disable_unprepare(dmac->clk); - - return ret; -} - -static void axi_dmac_remove(struct platform_device *pdev) -{ - struct axi_dmac *dmac = platform_get_drvdata(pdev); - free_irq(dmac->irq, dmac); - of_dma_controller_free(pdev->dev.of_node); - tasklet_kill(&dmac->chan.vchan.task); - dma_async_device_unregister(&dmac->dma_dev); - clk_disable_unprepare(dmac->clk); + return PTR_ERR_OR_ZERO(regmap); } static const struct of_device_id axi_dmac_of_match_table[] = { @@ -1153,7 +1144,6 @@ static struct platform_driver axi_dmac_driver = { .of_match_table = axi_dmac_of_match_table, }, .probe = axi_dmac_probe, - .remove_new = axi_dmac_remove, }; module_platform_driver(axi_dmac_driver); -- cgit v1.2.3