Commit 57b41758 authored May 26, 2015 by Petri Gynther Committed by Ralf Baechle May 29, 2015

MIPS: BMIPS: Fix bmips_wr_vec()



bmips_wr_vec() copies exception vector code from start to dst.

The call to dma_cache_wback() needs to flush (end-start) bytes,
starting at dst, from write-back cache to memory.

Signed-off-by: Petri Gynther <pgynther@google.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10193/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 556b6629

arch/mips/kernel/smp-bmips.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -444,7 +444,7 @@ struct plat_smp_ops bmips5000_smp_ops = {
		static void bmips_wr_vec(unsigned long dst, char start, char end)
		{
		memcpy((void *)dst, start, end - start);
		dma_cache_wback((unsigned long)start, end - start);
		dma_cache_wback(dst, end - start);
		local_flush_icache_range(dst, dst + (end - start));
		instruction_hazard();
		}