Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=05a059f3296c07a7455290dd8188b23ecb380fc7
Commit: 05a059f3296c07a7455290dd8188b23ecb380fc7
Parent: 4ec3c3d08d4de744b7a1d885529d1e040ec747a4
Author: Jeremy Kerr <[EMAIL PROTECTED]>
AuthorDate: Wed Sep 19 14:38:12 2007 +1000
Committer: Paul Mackerras <[EMAIL PROTECTED]>
CommitDate: Wed Sep 19 15:12:17 2007 +1000
[POWERPC] spufs: Fix restore_decr_wrapped() to match CBE Handbook
Based on an original patch from Masato Noguchi
<[EMAIL PROTECTED]>.
We're currently not restoring the SPE decrementer as specified by the
CBE handbook. This change fixes our implementation to match, and makes
the function read more like the docs.
Signed-off-by: Jeremy Kerr <[EMAIL PROTECTED]>
Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
---
arch/powerpc/platforms/cell/spufs/switch.c | 16 ++++++++--------
1 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/platforms/cell/spufs/switch.c
b/arch/powerpc/platforms/cell/spufs/switch.c
index 2506619..de7e5ee 100644
--- a/arch/powerpc/platforms/cell/spufs/switch.c
+++ b/arch/powerpc/platforms/cell/spufs/switch.c
@@ -1559,15 +1559,15 @@ static inline void restore_decr_wrapped(struct
spu_state *csa, struct spu *spu)
* "wrapped" flag is set, OR in a '1' to
* CSA.SPU_Event_Status[Tm].
*/
- if (csa->lscsa->decr_status.slot[0] & SPU_DECR_STATUS_WRAPPED) {
- csa->spu_chnldata_RW[0] |= 0x20;
- }
- if ((csa->lscsa->decr_status.slot[0] & SPU_DECR_STATUS_WRAPPED) &&
- (csa->spu_chnlcnt_RW[0] == 0 &&
- ((csa->spu_chnldata_RW[2] & 0x20) == 0x0) &&
- ((csa->spu_chnldata_RW[0] & 0x20) != 0x1))) {
+ if (!(csa->lscsa->decr_status.slot[0] & SPU_DECR_STATUS_WRAPPED))
+ return;
+
+ if ((csa->spu_chnlcnt_RW[0] == 0) &&
+ (csa->spu_chnldata_RW[1] & 0x20) &&
+ !(csa->spu_chnldata_RW[0] & 0x20))
csa->spu_chnlcnt_RW[0] = 1;
- }
+
+ csa->spu_chnldata_RW[0] |= 0x20;
}
static inline void restore_ch_part1(struct spu_state *csa, struct spu *spu)
-
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