spi: Always check complete callback before calling it
Since commit 1e25cd4729bd "spi: Do not require a completion", this checking is
required to prevent NULL pointer dereference.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/spi/spi-txx9.c b/drivers/spi/spi-txx9.c
index 6191ced..57a1497 100644
--- a/drivers/spi/spi-txx9.c
+++ b/drivers/spi/spi-txx9.c
@@ -265,7 +265,8 @@
exit:
m->status = status;
- m->complete(m->context);
+ if (m->complete)
+ m->complete(m->context);
/* normally deactivate chipselect ... unless no error and
* cs_change has hinted that the next message will probably