Setting a 'silent' parameter without a synth would crash the kernel.
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
drivers/staging/speakup/synth.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/staging/speakup/synth.c b/drivers/staging/speakup/synth.c
index 0b3549b..172cf62 100644
--- a/drivers/staging/speakup/synth.c
+++ b/drivers/staging/speakup/synth.c
@@ -212,6 +212,9 @@ void synth_start(void)
void spk_do_flush(void)
{
+ if (!synth)
+ return;
+
speakup_info.flushing = 1;
synth_buffer_clear();
if (synth->alive) {
--
1.7.10.4
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