Hi,
On Sat, 28 Sep 2013 02:10:12 +0300
Aaro Koskinen <aaro.koski...@iki.fi> wrote:
> Hi,
>
> 3.12-rc2 breaks the boot (BUG: scheduling while atomic, see logs below)
> on Lemote Mini-PC (MIPS). According to git bisect, this is caused by:
>
> ff522058bd717506b2fa066fa564657f2b86477e is the first bad commit
> commit ff522058bd717506b2fa066fa564657f2b86477e
> Author: Ralf Baechle <r...@linux-mips.org>
> Date: Tue Sep 17 12:44:31 2013 +0200
>
> MIPS: Fix accessing to per-cpu data when flushing the cache
>
> Reverting the commit from v3.12-rc2 makes the board boot fine.
Please try this patch on top of rc2.
MIPS: Fix forgotten preempt_enable() when CPU has inclusive pcaches
Signed-off-by: Yoichi Yuasa <yu...@linux-mips.org>
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 627883b..2492e60 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -609,6 +609,7 @@ static void r4k_dma_cache_wback_inv(unsigned long addr,
unsigned long size)
r4k_blast_scache();
else
blast_scache_range(addr, addr + size);
+ preempt_enable();
__sync();
return;
}
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