From: Philippe Gerum <rpm@xenomai.org>
Date: Mon, 22 Jun 2009 16:24:18 +0000 (+0200)
Subject: Blackfin: allow EVT5 to preempt irqtail prologue (CONFIG_DEBUG_HWERR)
X-Git-Tag: firefly_0821_release~12942^2~64
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=70f47202320623270f327e249df0121c09e45c09;p=firefly-linux-kernel-4.4.55.git

Blackfin: allow EVT5 to preempt irqtail prologue (CONFIG_DEBUG_HWERR)

Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---

diff --git a/arch/blackfin/mach-common/interrupt.S b/arch/blackfin/mach-common/interrupt.S
index ae7fc88ab6a0..29fbf67f47fa 100644
--- a/arch/blackfin/mach-common/interrupt.S
+++ b/arch/blackfin/mach-common/interrupt.S
@@ -276,7 +276,15 @@ ENTRY(___ipipe_call_irqtail)
 	( r7:4, p5:3 ) = [sp++];
 	rets = [sp++];
 
-	r0 = 0x401f (z);
+#ifdef CONFIG_DEBUG_HWERR
+	/* enable irq14 & hwerr interrupt, until we transition to _evt_evt14 */
+	r0 = (EVT_IVG14 | EVT_IVHW | \
+		EVT_IRPTEN | EVT_EVX | EVT_NMI | EVT_RST | EVT_EMU);
+#else
+	/* Only enable irq14 interrupt, until we transition to _evt_evt14 */
+	r0 = (EVT_IVG14 | \
+		EVT_IRPTEN | EVT_EVX | EVT_NMI | EVT_RST | EVT_EMU);
+#endif
 	sti r0;
 	raise 14;		/* Branches to _evt_evt14 */
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