From patchwork Wed Mar 1 18:52:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Jacques Hiblot X-Patchwork-Id: 13156336 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2904CC6FA9D for ; Wed, 1 Mar 2023 18:53:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Wed, 1 Mar 2023 19:52:59 +0100 From: Jean-Jacques Hiblot To: , , Geert Uytterhoeven , Magnus Damm , Russell King , Michael Ellerman , Nicholas Piggin , Christophe Leroy , , Daniel Lezcano , Thomas Gleixner , Claudiu Beznea , Marc Zyngier , , Manivannan Sadhasivam , Palmer Dabbelt , Paul Walmsley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Rob Herring , Frank Rowand , Bjorn Helgaas , Nishanth Menon , , , , , CC: , , , , , , , , , , , , Jean-Jacques Hiblot Subject: [PATCH 3/3] of: irq: release the node after looking up for "interrupts-extended" Date: Wed, 1 Mar 2023 19:52:09 +0100 Message-ID: <20230301185209.274134-4-jjhiblot@traphandler.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230301185209.274134-1-jjhiblot@traphandler.com> References: <20230301185209.274134-1-jjhiblot@traphandler.com> MIME-Version: 1.0 X-Originating-IP: [88.161.25.233] X-ClientProxiedBy: DAG3EX2.emp2.local (172.16.2.22) To DAG1EX1.emp2.local (172.16.2.1) X-Ovh-Tracer-Id: 11460535155466975612 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvhedrudelhedguddutdcutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfqggfjpdevjffgvefmvefgnecuuegrihhlohhuthemucehtddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkffojghfggfgtghisehtkeertdertddtnecuhfhrohhmpeflvggrnhdqlfgrtghquhgvshcujfhisghlohhtuceojhhjhhhisghlohhtsehtrhgrphhhrghnughlvghrrdgtohhmqeenucggtffrrghtthgvrhhnpeduteevleevvefggfdvueffffejhfehheeuiedtgedtjeeghfehueduudegfeefueenucfkphepuddvjedrtddrtddruddpkeekrdduiedurddvhedrvdeffeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeduvdejrddtrddtrddupdhmrghilhhfrhhomhepoehjjhhhihgslhhothesthhrrghphhgrnhgulhgvrhdrtghomheqpdhnsggprhgtphhtthhopedupdhrtghpthhtohepshgrrhgrvhgrnhgrkhesghhoohhglhgvrdgtohhmpdhnmhesthhirdgtohhmpdhsshgrnhhtohhshheskhgvrhhnvghlrdhorhhgpdhmrghthhhirghsrdhnhihmrghnsehinhhtvghlrdgtohhmpdhgrhgvghhkhheslhhinhhugihfohhunhgurghtihhonhdrohhrghdpthhhihgvrhhrhidrrhgvughinhhgsehgmhgrihhlrdgtohhmpdhjohhnrghthhgrnhhhsehnvhhiughirgdrtghomhdplhhinhhugi dqrhgvnhgvshgrshdqshhotgesvhhgvghrrdhkvghrnhgvlhdrohhrghdplhhinhhugidqrghrmhdqkhgvrhhnvghlsehlihhsthhsrdhinhhfrhgruggvrggurdhorhhgpdhlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdplhhinhhugihpphgtqdguvghvsehlihhsthhsrdhoiihlrggsshdrohhrghdplhhinhhugidqfihirhgvlhgvshhssehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhlihhnuhigqdgrtghtihhonhhssehlihhsthhsrdhinhhfrhgruggvrggurdhorhhgpdhlihhnuhigqdhrihhstghvsehlihhsthhsrdhinhhfrhgruggvrggurdhorhhgpdhlihhnuhigqdhsuhhngihisehlihhsthhsrdhlihhnuhigrdguvghvpdguvghvihgtvghtrhgvvgesvhhgvghrrdhkvghrnhgvlhdrohhrghdplhhinhhugidqphgtihesvhhgvghrrdhkvghrnhgvlhdrohhrghdplhhinhhugidquhhssgesvhhgvghrrdhkvghrnhgvlhdrohhrghdpsghhvghlghgrrghssehgohhoghhlvgdrtghomhdpfhhrohifrghnugdrlhhishhtsehgmhgrihhlrdgtohhmpdhrohgshhdoughtsehkvghrnhgvlhdrohhrghdpshgrmhhuvghlsehshhholhhlrghnugdrohhrghdptghlvghmvghnthdrlhgvghgvrhessghoohhtlhhinhdrtghomhdpghgvvghrthdorhgvnhgvshgrshesghhlihguvghrrdgsvgdpmhgrghhnuhhsrdgurghmmhesghhmrghilhdrtghomhdplhhinhhugiesrghrmhhlihhnuhigrdh orhhgrdhukhdpmhhpvgesvghllhgvrhhmrghnrdhiugdrrghupdhnphhighhgihhnsehgmhgrihhlrdgtohhmpdgthhhrihhsthhophhhvgdrlhgvrhhohiestghsghhrohhuphdrvghupdiirghjvggtheesghhmrghilhdrtghomhdplhhinhhugidqthgvghhrrgesvhhgvghrrdhkvghrnhgvlhdrohhrghdpuggrnhhivghlrdhlvgiitggrnhhosehlihhnrghrohdrohhrghdptghlrghuughiuhdrsggviihnvggrsehmihgtrhhotghhihhprdgtohhmpdhmrgiisehkvghrnhgvlhdrohhrghdprghfrggvrhgsvghrsehsuhhsvgdruggvpdhmrghniheskhgvrhhnvghlrdhorhhgpdhprghlmhgvrhesuggrsggsvghlthdrtghomhdpphgruhhlrdifrghlmhhslhgvhiesshhifhhivhgvrdgtohhmpdifvghnshestghsihgvrdhorhhgpdhjvghrnhgvjhdrshhkrhgrsggvtgesghhmrghilhdrtghomhdpthhglhigsehlihhnuhhtrhhonhhigidruggvpdfovfetjfhoshhtpehmohehvdekpdhmohguvgepshhmthhpohhuth X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230301_105310_585596_B09DCFBC X-CRM114-Status: GOOD ( 13.09 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org When of_parse_phandle_with_args() succeeds, a get() is performed on out_irq->np. And another get() is performed in of_irq_parse_raw(), resulting in the refcount being incremented twice. Fixing this by calling put() after of_irq_parse_raw(). Signed-off-by: Jean-Jacques Hiblot --- drivers/of/irq.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 95da943fcf075..244f240bc4ac4 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -349,8 +349,12 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar /* Try the new-style interrupts-extended first */ res = of_parse_phandle_with_args(device, "interrupts-extended", "#interrupt-cells", index, out_irq); - if (!res) - return of_irq_parse_raw(addr, out_irq); + if (!res) { + p = out_irq->np; + res = of_irq_parse_raw(addr, out_irq); + of_node_put(p); + return res; + } /* Look for the interrupt parent. */ p = of_irq_find_parent(device);