CVS commit: src/sys/arch/evbsh3/evbsh3

["NONAKA Kimihiro" <nonaka%netbsd.org@localhost>]

Module Name:    src
Committed By:   nonaka
Date:           Thu Jan 22 03:43:24 UTC 2015

Modified Files:
        src/sys/arch/evbsh3/evbsh3: bus_dma.c

Log Message:
Sync with sys/arch/landisk/landisk/bus_dma.c rev.1.15.

> Don't call sh_dcache_inv_range() on BUS_DMASYNC_POSTREAD ops
> as other mips and arm ports.
>
> All cached data is cared on BUS_DMASYNC_PREREAD and
> invalidating cache without writeback could cause unexpected
> data loss if specified sync region is not cacheline aligned.
>
> This may fix "ffs_alloccg: map corrupted" panic on acardide IDE disks,
> which didn't happen on USB HDD.


To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/sys/arch/evbsh3/evbsh3/bus_dma.c

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