[PATCH] m5602: correctly check failed thread creation

From: Insu Yun
Date: Mon Oct 19 2015 - 11:23:06 EST


Since thread creation can be failed, check return value of
kthread_create and handle an error.

Signed-off-by: Insu Yun <wuninsu@xxxxxxxxx>
---
drivers/media/usb/gspca/m5602/m5602_s5k83a.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/media/usb/gspca/m5602/m5602_s5k83a.c b/drivers/media/usb/gspca/m5602/m5602_s5k83a.c
index bf6b215..76b40d1 100644
--- a/drivers/media/usb/gspca/m5602/m5602_s5k83a.c
+++ b/drivers/media/usb/gspca/m5602/m5602_s5k83a.c
@@ -221,6 +221,10 @@ int s5k83a_start(struct sd *sd)
to assume that there is no better way of accomplishing this */
sd->rotation_thread = kthread_create(rotation_thread_function,
sd, "rotation thread");
+ if (IS_ERR(sd->rotation_thread)) {
+ err = PTR_ERR(sd->rotation_thread);
+ goto fail;
+ }
wake_up_process(sd->rotation_thread);

/* Preinit the sensor */
@@ -234,9 +238,11 @@ int s5k83a_start(struct sd *sd)
data[0]);
}
if (err < 0)
- return err;
+ goto fail;

return s5k83a_set_led_indication(sd, 1);
+fail:
+ return err;
}

int s5k83a_stop(struct sd *sd)
--
1.9.1

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