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Blackfin: no-mpu: fix masking of small uncached dma region
authorSonic Zhang <sonic.zhang@analog.com>
Thu, 4 Nov 2010 08:01:37 +0000 (08:01 +0000)
committerMike Frysinger <vapier@gentoo.org>
Mon, 10 Jan 2011 12:18:18 +0000 (07:18 -0500)
commit398834330cb07ba66fca5fb23a51075a67e4d4fa
treea659f8f7bf7266b848e0c103ee8956317f0a0820tree | snapshot
parent36e11ab23e22243b9c608a08c8d68ca5686b6c9bcommit | diff
Blackfin: no-mpu: fix masking of small uncached dma region

When using an uncached DMA region less than 1 MiB, we try to mask off
the whole last 1 MiB for it.  Unfortunately, this fails as we forgot
to subtract one from the calculated mask, leading to the region still
be marked as cacheable.

Reported-by: Andrew Rook <andrew.rook@speakerbus.co.uk>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
arch/blackfin/kernel/cplb-nompu/cplbinit.c diff | blob | history
Domain: System / Uncategorized;