CVS commit: src/sys/dev/pci

["Jason R Thorpe" <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Mon Nov 20 21:59:38 UTC 2023

Modified Files:
        src/sys/dev/pci: pciide_common.c

Log Message:
pciide_dma_dmamap_setup(): If we end up with a DMA segment with an odd
length or odd starting address, unload the map and return EINVAL.  Some
controllers get really upset if a DMA segment has an odd address or length.
This can happen if a physio user performs a virtually-contiguous I/O that
starts at an odd address and spans a page boundary where the resulting
physical pages are discontiguous.  The EINVAL return will cause the upper
layers in the ATA code to re-try the I/O using PIO, which should (will
in all of my tests) succeed.

PR port-alpha/56434


To generate a diff of this commit:
cvs rdiff -u -r1.69 -r1.70 src/sys/dev/pci/pciide_common.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.