diff options
| author | Krzysztof Kozlowski <krzk@kernel.org> | 2019-10-04 17:08:26 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-11-02 21:55:19 +0530 |
| commit | 41814c4eadf8a791b6d07114f96e7e120e59555c (patch) | |
| tree | ae38c71f36fdf5c362fde43f25be5521113daabb /drivers/dma/fsl-qdma.c | |
| parent | 53596dfa59807d6e4a30e9f157f73cfc14d7da89 (diff) | |
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: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peng Ma <peng.ma@nxp.com>
Tested-by: Peng Ma <peng.ma@nxp.com>
Link: https://lore.kernel.org/r/20191004150826.6656-1-krzk@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/fsl-qdma.c')
| -rw-r--r-- | drivers/dma/fsl-qdma.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/dma/fsl-qdma.c b/drivers/dma/fsl-qdma.c index 06664fbd2d91..89792083d62c 100644 --- a/drivers/dma/fsl-qdma.c +++ b/drivers/dma/fsl-qdma.c @@ -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); |