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dmaengine: at_hdmac: fix module unloading
commit77e75fda94
upstream. of_dma_controller_free() was not called on module onloading. This lead to a soft lockup: watchdog: BUG: soft lockup - CPU#0 stuck for 23s! Modules linked in: at_hdmac [last unloaded: at_hdmac] when of_dma_request_slave_channel() tried to call ofdma->of_dma_xlate(). Cc: stable@vger.kernel.org Fixes:bbe89c8e3d
("at_hdmac: move to generic DMA binding") Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -2006,6 +2006,8 @@ static int at_dma_remove(struct platform_device *pdev)
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struct resource *io;
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at_dma_off(atdma);
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if (pdev->dev.of_node)
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of_dma_controller_free(pdev->dev.of_node);
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dma_async_device_unregister(&atdma->dma_common);
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dma_pool_destroy(atdma->memset_pool);
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