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dmaengine: axi-dmac: add a check for devm_regmap_init_mmio
commita5b982af95
upstream. The driver misses checking the result of devm_regmap_init_mmio(). Add a check to fix it. Fixes:fc15be39a8
("dmaengine: axi-dmac: add regmap support") Signed-off-by: Chuhong Yuan <hslester96@gmail.com> Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Link: https://lore.kernel.org/r/20191209085711.16001-1-hslester96@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 9 additions and 1 deletions
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@ -830,6 +830,7 @@ static int axi_dmac_probe(struct platform_device *pdev)
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struct dma_device *dma_dev;
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struct axi_dmac *dmac;
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struct resource *res;
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struct regmap *regmap;
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int ret;
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dmac = devm_kzalloc(&pdev->dev, sizeof(*dmac), GFP_KERNEL);
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@ -921,10 +922,17 @@ static int axi_dmac_probe(struct platform_device *pdev)
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platform_set_drvdata(pdev, dmac);
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devm_regmap_init_mmio(&pdev->dev, dmac->base, &axi_dmac_regmap_config);
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regmap = devm_regmap_init_mmio(&pdev->dev, dmac->base,
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&axi_dmac_regmap_config);
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if (IS_ERR(regmap)) {
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ret = PTR_ERR(regmap);
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goto err_free_irq;
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}
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return 0;
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err_free_irq:
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free_irq(dmac->irq, dmac);
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err_unregister_of:
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of_dma_controller_free(pdev->dev.of_node);
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err_unregister_device:
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