[PATCH 3/3][staging-next] staging: pi433: fix thread_run failure check

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

The check for thread_run failure is incorrect, use IS_ERR instead.

Cleans up sparse error message:
"error: incompatible types for operation (<)"

Fixes: 874bcba65f9a ("staging: pi433: New driver")
Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 drivers/staging/pi433/pi433_if.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c
index 95930a192de4..266e572ae66e 100644
--- a/drivers/staging/pi433/pi433_if.c
+++ b/drivers/staging/pi433/pi433_if.c
@@ -1152,8 +1152,7 @@ static int pi433_probe(struct spi_device *spi)
 	device->tx_task_struct = kthread_run(pi433_tx_thread,
 					     device,
 					     "pi433_tx_task");
-	if (device->tx_task_struct < 0)
-	{
+	if (IS_ERR(device->tx_task_struct)) {
 		dev_dbg(device->dev, "start of send thread failed");
 		goto send_thread_failed;
 	}
-- 
2.11.0