Commit 41814c4e authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Vinod Koul
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dmaengine: fsl-qdma: Handle invalid qdma-queue0 IRQ 



platform_get_irq_byname() might return -errno which later would be cast
to an unsigned int and used in IRQ handling code leading to usage of
wrong ID and errors about wrong irq_base.

Signed-off-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: default avatarPeng Ma <peng.ma@nxp.com>
Tested-by: default avatarPeng Ma <peng.ma@nxp.com>
Link: https://lore.kernel.org/r/20191004150826.6656-1-krzk@kernel.org


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 53596dfa

drivers/dma/fsl-qdma.c

+3 −0
Original line number Diff line number Diff line
@@ -1155,6 +1155,9 @@ static int fsl_qdma_probe(struct platform_device *pdev) 
		return ret;



	fsl_qdma->irq_base = platform_get_irq_byname(pdev, "qdma-queue0");

	if (fsl_qdma->irq_base < 0)

		return fsl_qdma->irq_base;



	fsl_qdma->feature = of_property_read_bool(np, "big-endian");

	INIT_LIST_HEAD(&fsl_qdma->dma_dev.channels);