linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Julia Lawall <Julia.Lawall@lip6.fr>
To: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: kernel-janitors@vger.kernel.org,
	Prashant Gaikwad <pgaikwad@nvidia.com>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@codeaurora.org>,
	Stephen Warren <swarren@wwwdotorg.org>,
	Thierry Reding <thierry.reding@gmail.com>,
	Alexandre Courbot <gnurou@gmail.com>,
	linux-clk@vger.kernel.org, linux-tegra@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Russell King - ARM Linux <linux@arm.linux.org.uk>,
	Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
	Andrew Lunn <andrew@lunn.ch>, Bjorn Helgaas <bhelgaas@google.com>,
	Jason Cooper <jason@lakedaemon.net>
Subject: [PATCH 2/2] clk: tegra: delete unneeded of_node_put
Date: Fri,  9 Oct 2015 19:47:41 +0200	[thread overview]
Message-ID: <1444412861-2580-3-git-send-email-Julia.Lawall@lip6.fr> (raw)
In-Reply-To: <1444412861-2580-1-git-send-email-Julia.Lawall@lip6.fr>

for_each_child_of_node performs an of_node_put on each iteration, so
putting an of_node_put before a continue results in a double put.

The semantic match that finds this problem is as follows
(http://coccinelle.lip6.fr):

// <smpl>
@@
expression root,e;
local idexpression child;
iterator name for_each_child_of_node;
@@

 for_each_child_of_node(root, child) {
   ... when != of_node_get(child)
*  of_node_put(child);
   ...
*  continue;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
 drivers/clk/tegra/clk-emc.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/clk/tegra/clk-emc.c b/drivers/clk/tegra/clk-emc.c
index 138a94b..e1fe8f3 100644
--- a/drivers/clk/tegra/clk-emc.c
+++ b/drivers/clk/tegra/clk-emc.c
@@ -491,10 +491,8 @@ struct clk *tegra_clk_register_emc(void __iomem *base, struct device_node *np,
 	for_each_child_of_node(np, node) {
 		err = of_property_read_u32(node, "nvidia,ram-code",
 					   &node_ram_code);
-		if (err) {
-			of_node_put(node);
+		if (err)
 			continue;
-		}
 
 		/*
 		 * Store timings for all ram codes as we cannot read the


  parent reply	other threads:[~2015-10-09 17:58 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-09 17:47 [PATCH 0/2] delete unneeded of_node_put Julia Lawall
2015-10-09 17:47 ` [PATCH 1/2] memory: tegra: " Julia Lawall
2016-06-14  9:38   ` Thierry Reding
2015-10-09 17:47 ` Julia Lawall [this message]
2015-10-12 18:52   ` [PATCH 2/2] clk: " Stephen Boyd

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1444412861-2580-3-git-send-email-Julia.Lawall@lip6.fr \
    --to=julia.lawall@lip6.fr \
    --cc=andrew@lunn.ch \
    --cc=bhelgaas@google.com \
    --cc=gnurou@gmail.com \
    --cc=jason@lakedaemon.net \
    --cc=kernel-janitors@vger.kernel.org \
    --cc=linux-clk@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-tegra@vger.kernel.org \
    --cc=linux@arm.linux.org.uk \
    --cc=mturquette@baylibre.com \
    --cc=pdeschrijver@nvidia.com \
    --cc=pgaikwad@nvidia.com \
    --cc=sboyd@codeaurora.org \
    --cc=swarren@wwwdotorg.org \
    --cc=thierry.reding@gmail.com \
    --cc=thomas.petazzoni@free-electrons.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).