[patch] pps: checking for NULL instead of IS_ERR()

[Dan Carpenter]

class_create() never returns NULLs only ERR_PTRs.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/pps/pps.c b/drivers/pps/pps.c
index 2baadd2..98fbe62 100644
--- a/drivers/pps/pps.c
+++ b/drivers/pps/pps.c
@@ -369,9 +369,9 @@ static int __init pps_init(void)
 	int err;
 
 	pps_class = class_create(THIS_MODULE, "pps");
-	if (!pps_class) {
+	if (IS_ERR(pps_class)) {
 		pr_err("failed to allocate class\n");
-		return -ENOMEM;
+		return PTR_ERR(pps_class);
 	}
 	pps_class->dev_attrs = pps_attrs;
 
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