[PATCH 1/6] mfd: twl-core: Return directly after a failed platform_device_alloc() in add_numbered_child()

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Sun, 26 Jun 2016 12:25:36 +0200

The platform_device_put() function was called in one case by the
add_numbered_child() function during error handling even if the passed
variable "pdev" contained a null pointer.
Return directly in this case.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 drivers/mfd/twl-core.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 831696e..9458c6d 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -622,11 +622,8 @@ add_numbered_child(unsigned mod_no, const char *name, int 
num,
        twl = &twl_priv->twl_modules[sid];
 
        pdev = platform_device_alloc(name, num);
-       if (!pdev) {
-               dev_dbg(&twl->client->dev, "can't alloc dev\n");
-               status = -ENOMEM;
-               goto err;
-       }
+       if (!pdev)
+               return ERR_PTR(-ENOMEM);
 
        pdev->dev.parent = &twl->client->dev;
 
-- 
2.9.0