Hello, i have checked the linux kernel with the static code analysis tool cppchek. It found a memory leak in file /sound/soc/fsl/mpc5200_dma.c at line 456. Take a look at the code: ... /* Allocate and initialize the driver private data */ psc_dma = kzalloc(sizeof *psc_dma, GFP_KERNEL); if (!psc_dma) { iounmap(regs); return -ENOMEM; } /* Get the PSC ID */ prop = of_get_property(op->node, "cell-index", &size); if (!prop || size < sizeof *prop) 456 return -ENODEV; ... Indeed, there is a missing kfree(psc_dma). Best regards Ettl Martin