[PATCH 2/2] input: cyapa: fix variable dereferenced before check 'gen5_pip->resp_len' issue
From: Dudley Du <hidden>
Date: 2015-01-22 06:51:13
Also in:
lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
Fixes the warning issue of the variable dereferenced before check 'gen5_pip->resp_len' report by dan Carpenter. Signed-off-by: Dudley Du <redacted> --- drivers/input/mouse/cyapa_gen5.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/input/mouse/cyapa_gen5.c b/drivers/input/mouse/cyapa_gen5.c
index 69d9059..ed1af74 100644
--- a/drivers/input/mouse/cyapa_gen5.c
+++ b/drivers/input/mouse/cyapa_gen5.c@@ -2558,7 +2558,9 @@ static bool cyapa_gen5_irq_cmd_handler(struct cyapa *cyapa) * trackpad device when booting/rebooting * their chrome book. */ - length = *gen5_pip->resp_len; + length = 0; + if (gen5_pip->resp_len) + length = *gen5_pip->resp_len; cyapa_empty_pip_output_data(cyapa, gen5_pip->resp_data, &length,
--
1.9.1