Commit 39e96c88 authored Nov 18, 2008 by Mike Frysinger Committed by Bryan Wu Nov 18, 2008

Blackfin arch: fix bug - dmacopy test case fail on all platform



The cache code I added flushes 1 line too little if the start address is
not aligned to the cache size. Cache align the start address so that when
we straddle cache aligns, we get the right count.

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

parent 4ee1c453

arch/blackfin/mach-common/cache.S

+5 −1

Original line number	Diff line number	Diff line
		@@ -25,9 +25,13 @@
		*/
		.macro do_flush flushins:req optflushins optnopins label

		R2 = -L1_CACHE_BYTES;

		/* start = (start & -L1_CACHE_BYTES) */
		R0 = R0 & R2;

		/* end = ((end - 1) & -L1_CACHE_BYTES) + L1_CACHE_BYTES; */
		R1 += -1;
		R2 = -L1_CACHE_BYTES;
		R1 = R1 & R2;
		R1 += L1_CACHE_BYTES;

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