linux-kernel - [PATCH 1/8] of/irq: Fix wrong value of variable @len in of_irq_parse_imap

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Message-Id: <20241209-of_irq_fix-v1-1-782f1419c8a1@quicinc.com>
Date: Mon, 09 Dec 2024 21:24:59 +0800
From: Zijun Hu <zijun_hu@...oud.com>
To: Rob Herring <robh@...nel.org>, Saravana Kannan <saravanak@...gle.com>, 
 Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Bjorn Helgaas <bhelgaas@...gle.com>, Marc Zyngier <maz@...nel.org>, 
 Stefan Wiehler <stefan.wiehler@...ia.com>, 
 Grant Likely <grant.likely@...aro.org>, Tony Lindgren <tony@...mide.com>, 
 Kumar Gala <galak@...eaurora.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Julia Lawall <Julia.Lawall@...6.fr>, Jamie Iles <jamie@...ieiles.com>, 
 Grant Likely <grant.likely@...retlab.ca>, 
 Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Zijun Hu <zijun_hu@...oud.com>, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Rob Herring <rob.herring@...xeda.com>, 
 Zijun Hu <quic_zijuhu@...cinc.com>, stable@...r.kernel.org
Subject: [PATCH 1/8] of/irq: Fix wrong value of variable @len in
 of_irq_parse_imap_parent()

From: Zijun Hu <quic_zijuhu@...cinc.com>

Fix wrong @len value by 'len--' after 'imap++'
in of_irq_parse_imap_parent().

Fixes: 935df1bd40d4 ("of/irq: Factor out parsing of interrupt-map parent phandle+args from of_irq_parse_raw()")
Cc: stable@...r.kernel.org
Signed-off-by: Zijun Hu <quic_zijuhu@...cinc.com>
---
 drivers/of/irq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 67fc0ceaa5f51c18c14f96f2bb9f82bcb66f890e..43cf60479b9e18eb0eec35f39c147deccd8fe8dd 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -111,6 +111,7 @@ const __be32 *of_irq_parse_imap_parent(const __be32 *imap, int len, struct of_ph
 	else
 		np = of_find_node_by_phandle(be32_to_cpup(imap));
 	imap++;
+	len--;
 
 	/* Check if not found */
 	if (!np) {

-- 
2.34.1