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authorArnd Bergmann <arnd@arndb.de>2005-12-09 19:04:18 +0100
committerPaul Mackerras <paulus@samba.org>2006-01-09 14:53:21 +1100
commit38307341af3a0be8ec5319756361b51ac29dffc7 (patch)
tree082fae758ea5cc5e4376e7c9e0f3a6b479d59266
parent462c853eb574bc7843d9c56e84aca129aaa8e018 (diff)
downloadblackbird-op-linux-38307341af3a0be8ec5319756361b51ac29dffc7.tar.gz
blackbird-op-linux-38307341af3a0be8ec5319756361b51ac29dffc7.zip
[PATCH] spufs: clear dsisr on CLASS1[Mf] exception
Because of always clearing DSISR at spu class 1 interrupt handler, kernel may lose Class1[Mf] interrupt. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Geoff Levand <geoff.levand@am.sony.com> Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/powerpc/platforms/cell/spu_base.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index f9da79eb3db0..3a5302151e09 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -240,7 +240,8 @@ spu_irq_class_1(int irq, void *data, struct pt_regs *regs)
stat = in_be64(&spu->priv1->int_stat_class1_RW) & mask;
dar = in_be64(&spu->priv1->mfc_dar_RW);
dsisr = in_be64(&spu->priv1->mfc_dsisr_RW);
- out_be64(&spu->priv1->mfc_dsisr_RW, 0UL);
+ if (stat & 2) /* mapping fault */
+ out_be64(&spu->priv1->mfc_dsisr_RW, 0UL);
out_be64(&spu->priv1->int_stat_class1_RW, stat);
spin_unlock(&spu->register_lock);
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