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CVS commit: src/sys/dev/pci

Module Name:    src
Committed By:   thorpej
Date:           Mon Nov 20 15:16:46 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, unload the map and return EIO.  Some controllers get really upset
if a DMA segment has an odd 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.

Ultimately, it's up to the physio user to paint inside the lines, but this
will prevent the disk controller from wandering off into the weeds, at least.

PR port-alpha/56434

To generate a diff of this commit:
cvs rdiff -u -r1.67 -r1.68 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.

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