Blackfin arch: fix bug - kernel build with write back policy fails to be booted up

Make sure IFLUSH is not the last instruction in the hardware loop to avoid
infinite core stall.

The dcache/icache function that only gets used in writeback mode was putting
IFLUSH as the last instruction in the hardware loop ... we know from design
that this may often lead to inifite core stalling, so switch the FLUSH/IFLUSH
order.

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

diff --git a/arch/blackfin/mach-common/cache.S b/arch/blackfin/mach-common/cache.S
index d6780b4952415ef0f01bd39e6e0724517b5f244e..a028e9450419b498c1f4741ec64e9a69dc945374 100644 (file)
--- a/arch/blackfin/mach-common/cache.S
+++ b/arch/blackfin/mach-common/cache.S
@@ -67,7 +67,7 @@ ENDPROC(_blackfin_icache_flush_range)
 
 /* Flush all cache lines assocoiated with this area of memory. */
 ENTRY(_blackfin_icache_dcache_flush_range)
-       do_flush IFLUSH, FLUSH
+       do_flush FLUSH, IFLUSH
 ENDPROC(_blackfin_icache_dcache_flush_range)
 
 /* Throw away all D-cached data in specified region without any obligation to