If the dma_init callback function returns with EINVAL, fall back to PIO. This will be used to work around bugs in certain pciide(4) controllers.
If the dma_init callback function returns with EINVAL, fall back to PIO.
This will be used to work around bugs in certain pciide(4) controllers.

From NetBSD.

ok jsg@, krw@, deraadt@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars