linux-kernel - [PATCH 2/2] driver core: fix smatch warning on dev->bus check

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Message-Id: <20161011184103.17744-2-robh@kernel.org>
Date:   Tue, 11 Oct 2016 13:41:03 -0500
From:   Rob Herring <robh@...nel.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: [PATCH 2/2] driver core: fix smatch warning on dev->bus check

Commit d42a09802174 (driver core: skip removal test for non-removable
drivers) introduced a smatch warning:

drivers/base/dd.c:386 really_probe()
         warn: variable dereferenced before check 'dev->bus' (see line 373)

Fix the warning by removing the dev->bus NULL check. dev->bus will never
be NULL, so the check was unnecessary.

Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Rob Herring <robh@...nel.org>
---
 drivers/base/dd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 8937a7ad7165..d76cd97a98b6 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -384,7 +384,7 @@ static int really_probe(struct device *dev, struct device_driver *drv)
 	if (test_remove) {
 		test_remove = false;
 
-		if (dev->bus && dev->bus->remove)
+		if (dev->bus->remove)
 			dev->bus->remove(dev);
 		else if (drv->remove)
 			drv->remove(dev);
-- 
2.10.0