Blackfin: fix trap_c() exit paths
The trap_c() code pushes the hardware trace status onto the stack, but
doesn't always restore it when returning from some trap code paths. So
unify the exit code paths to all head to the end of the function.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 2405f19..ed7127b 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -309,7 +309,7 @@
CHK_DEBUGGER_TRAP_MAYBE();
/* Check if this is a breakpoint in kernel space */
if (fp->ipend & 0xffc0)
- return;
+ goto traps_done;
else
break;
/* 0x03 - User Defined, userspace stack overflow */
@@ -325,7 +325,7 @@
info.si_code = TRAP_ILLTRAP;
sig = SIGTRAP;
CHK_DEBUGGER_TRAP();
- return;
+ goto traps_done;
#endif
/* 0x04 - User Defined */
/* 0x05 - User Defined */
@@ -355,7 +355,7 @@
CHK_DEBUGGER_TRAP_MAYBE();
/* Check if this is a single step in kernel space */
if (fp->ipend & 0xffc0)
- return;
+ goto traps_done;
else
break;
/* 0x11 - Trace Buffer Full, handled here */
@@ -459,7 +459,7 @@
CHK_DEBUGGER_TRAP_MAYBE();
/* Check if this is a watchpoint in kernel space */
if (fp->ipend & 0xffc0)
- return;
+ goto traps_done;
else
break;
#ifdef CONFIG_BF535
@@ -624,8 +624,8 @@
if (ANOMALY_05000461 && trapnr == VEC_HWERR && !access_ok(VERIFY_READ, fp->pc, 8))
fp->pc = SAFE_USER_INSTRUCTION;
+ traps_done:
trace_buffer_restore(j);
- return;
}
/* Typical exception handling routines */