CVE-2022-50023 dmaengine: dw-axi-dmac: ignore interrupt if no descriptor

In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-axi-dmac: ignore interrupt if no descriptor If the channel has no descriptor and the interrupt is raised then the kernel will OOPS. Check the result of vchannextdesc in the handler axichanblockxfercomplete to avoid...