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Date: Fri, 5 Jun 2009 04:04:49 -0400 From: Mike Frysinger <vapier@...too.org> To: linux-kernel@...r.kernel.org Cc: uclinux-dist-devel@...ckfin.uclinux.org, Robin Getz <robin.getz@...log.com> Subject: [PATCH 40/62] Blackfin: add workaround for anomaly 05000461 From: Robin Getz <robin.getz@...log.com> Returning too fast with a bad RETI can trigger false errors. Signed-off-by: Robin Getz <robin.getz@...log.com> Signed-off-by: Mike Frysinger <vapier@...too.org> --- arch/blackfin/kernel/traps.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c index 0d04a47..778a756 100644 --- a/arch/blackfin/kernel/traps.c +++ b/arch/blackfin/kernel/traps.c @@ -594,6 +594,9 @@ asmlinkage void trap_c(struct pt_regs *fp) force_sig_info(sig, &info, current); } + if (ANOMALY_05000461 && trapnr == VEC_HWERR && !access_ok(VERIFY_READ, fp->pc, 8)) + fp->pc = SAFE_USER_INSTRUCTION; + trace_buffer_restore(j); return; } -- 1.6.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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