powerpc/spufs: remove class_0_dsisr from spu exception handling

According to the CBEA, the SPU dsisr is not updated for class 0
exceptions.

spu_stopped() is testing the dsisr that was passed to it from the class
0 exception handler, so we return a false positive here.

This patch cleans up the interrupt handler and erroneous tests in
spu_stopped. It also removes the fields from the csa since it is not
needed to process class 0 events.

Signed-off-by: Luke Browning <lukebrowning@us.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

2 files changed, 1 insertions, 2 deletions

diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index 6abead6e681a..99348c1f4cab 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -131,7 +131,6 @@ struct spu {
         u64 flags;
         u64 class_0_pending;
         u64 class_0_dar;
-        u64 class_0_dsisr;
         u64 class_1_dar;
         u64 class_1_dsisr;
         size_t ls_size;
diff --git a/include/asm-powerpc/spu_csa.h b/include/asm-powerpc/spu_csa.h
index 129ec148d451..a40fd491250c 100644
--- a/include/asm-powerpc/spu_csa.h
+++ b/include/asm-powerpc/spu_csa.h
@@ -254,7 +254,7 @@ struct spu_state {
         u64 spu_chnldata_RW[32];
         u32 spu_mailbox_data[4];
         u32 pu_mailbox_data[1];
-        u64 class_0_dar, class_0_dsisr, class_0_pending;
+        u64 class_0_dar, class_0_pending;
         u64 class_1_dar, class_1_dsisr;
         unsigned long suspend_time;
         spinlock_t register_lock;