[i-g-t PATCH 1/2] igt_dummyload: clear signal handler on the desructor

[Abdiel Janulgue <abdiel.janulgue@linux.intel.com>]

Fixes an issue when calling igt_spin_batch_set_timeout and then
tearing down the spinner right away before it has the chance
to timeout, causes the associated signal handler to linger. Make
sure to remove the handler on the destructor as well.

Signed-off-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
---
 lib/igt_dummyload.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/lib/igt_dummyload.c b/lib/igt_dummyload.c
index 99515ea..b201af0 100644
--- a/lib/igt_dummyload.c
+++ b/lib/igt_dummyload.c
@@ -169,9 +169,17 @@ igt_spin_batch_new(int fd, int engine, unsigned int dep_handle)
 	return spin;
 }
 
-static void sig_handler(int sig, siginfo_t *info, void *arg)
+static void clear_sig_handler(int sig)
 {
 	struct sigaction act;
+
+	memset(&act, 0, sizeof(act));
+	act.sa_handler = SIG_DFL;
+	igt_assert(sigaction(sig, &act, NULL) == 0);
+}
+
+static void sig_handler(int sig, siginfo_t *info, void *arg)
+{
 	struct igt_spin *iter;
 
 	igt_list_for_each(iter, &spin_list, link) {
@@ -181,9 +189,7 @@ static void sig_handler(int sig, siginfo_t *info, void *arg)
 		}
 	}
 
-	memset(&act, 0, sizeof(act));
-	act.sa_handler = SIG_DFL;
-	igt_assert(sigaction(info->si_signo, &act, NULL) == 0);
+	clear_sig_handler(info->si_signo);
 }
 
 /**
@@ -248,6 +254,7 @@ void igt_spin_batch_end(igt_spin_t *spin)
 
 	*spin->batch = MI_BATCH_BUFFER_END;
 	__sync_synchronize();
+	clear_sig_handler(spin->signo);
 }
 
 /**
-- 
2.7.4

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