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authorRobin Getz <robin.getz@analog.com>2009-07-09 15:11:52 +0000
committerMike Frysinger <vapier@gentoo.org>2009-07-16 01:52:48 -0400
commitf574a76a3b19848ac61814756716e26f85f2c3f7 (patch)
treeba5f326f1bdfd22deacce491835a678fe3b83a1f /arch/blackfin/kernel
parentc70c754ff916cedd969a73549799d2167ffefcd6 (diff)
downloadop-kernel-dev-f574a76a3b19848ac61814756716e26f85f2c3f7.zip
op-kernel-dev-f574a76a3b19848ac61814756716e26f85f2c3f7.tar.gz
Blackfin: work around anomaly 05000189
Similar to anomaly 05000281 but not as bad, we cannot return to the instruction causing a fault otherwise we'll trigger a second false exception. The system can still recover, but it isn't correct. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/kernel')
-rw-r--r--arch/blackfin/kernel/traps.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 9efac0f..bf2b2d1 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -621,7 +621,8 @@ asmlinkage void trap_c(struct pt_regs *fp)
}
if ((ANOMALY_05000461 && trapnr == VEC_HWERR && !access_ok(VERIFY_READ, fp->pc, 8)) ||
- (ANOMALY_05000281 && trapnr == VEC_HWERR))
+ (ANOMALY_05000281 && trapnr == VEC_HWERR) ||
+ (ANOMALY_05000189 && (trapnr == VEC_CPLB_I_VL || trapnr == VEC_CPLB_VL)))
fp->pc = SAFE_USER_INSTRUCTION;
traps_done:
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