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Thu, 02 Jul 2026 01:10:49 -0700 (PDT) From: Jerome Brunet Date: Thu, 02 Jul 2026 10:10:02 +0200 Subject: [PATCH v3 3/8] clk: sunxi-ng: fix ccu probe clock unregister on error Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20260702-a733-rtc-v3-3-eb2580374de6@baylibre.com> References: <20260702-a733-rtc-v3-0-eb2580374de6@baylibre.com> In-Reply-To: <20260702-a733-rtc-v3-0-eb2580374de6@baylibre.com> To: Junhui Liu , Alexandre Belloni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Michael Turquette , Stephen Boyd , Maxime Ripard Cc: linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, Sashiko , Jerome Brunet X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2127; i=jbrunet@baylibre.com; h=from:subject:message-id; bh=xEow9YFv9tWxKuTGRmYBanqZYgnlQCz+XPTruWbAxlY=; b=owEBbQKS/ZANAwAKAeb8Dxw38tqFAcsmYgBqRhz4y0UzWpG2vq9pNsBeXNaVPQAXpCwoH/CqF 5UKSr9tabGJAjMEAAEKAB0WIQT04VmuGPP1bV8btxvm/A8cN/LahQUCakYc+AAKCRDm/A8cN/La heBcEACG7fRdAKaggYdYW+Kmy5AukfFGo0WDxvZitKeqqERRluPiowtv+fiW72Eh+xmI6rB88xT A9NgJkcYyLsMKEa30ZOg6paZS/e1Wyfg3apNWs04HXG/SCHZ1TO5FUrXxjDAynwHEvOprtof54n ZLep4U6cVL48VOhgvX+nqF5WLDhVSQbK1jnIVR2kaMNj7a/240tzf/mAmrrUKOJMVH5qzNP1+qZ /PR38HOQLqe+7u8mM3QBRDraZ2jCio4OxQy1IgVN5hXCEXCiCf2FmN+bmfZ/jcJNZlBJ9GPgz4W G8PAZ3AvDVIcT8KAtgqJ2tCqZ3yeKPrXB28FAJc+40ocBqjJBa+LUWI+KqyRQe014Xyl/FMvbSf gQ3jd+LBj+Rzu0p6SMgkS1qdOhtsYBT3FX4LMuKFGeU66/pWtS8JorozPyetUsdhu1jVEafMysx EAdBUqHexlFlrIaiRITCK2q72pAO87AEBno0EjyJp50T3JM+X3TuZ3Q5DxPQeiLA6go+cc8p3yn w5SNHC+GNWQK3GXnqjK5KaUQkw0IJu/QZIk+UadfkrPS8A6qY8+MmDPytdCqXoXBn5SzIHQ6uGI lr7rCwIHXbb0Zb9O2YfDG2T/vooP48C9zFfsO9fx6pXw5qjqEWU64yAokgm1wxnnYPZJjKY4a5s LgBFgUmnX/HASMQ== X-Developer-Key: i=jbrunet@baylibre.com; a=openpgp; fpr=F29F26CF27BAE1A9719AE6BDC3C92AAF3E60AED9 X-MORS-Enabled: yes X-MORS-DOMAIN: patchwork.local X-MORS-HOSTING: hosting172546 X-MORS-USER: hosting172546 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= When registering clocks with sunxi_ccu_probe(), the number of ccu_clocks and the number of hw clocks might be different, eventhough they usually are the same. If they are different, it could lead to out-of-bound access or registered clock left behind on error. Use a different variable when iterating on hw clocks so every registered clock, and only those, gets unregistered on error. Reported-by: Sashiko Closes: https://lore.kernel.org/r/20260629131254.7E34C1F00A3A@smtp.kernel.org Signed-off-by: Jerome Brunet Reviewed-by: Chen-Yu Tsai --- drivers/clk/sunxi-ng/ccu_common.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/clk/sunxi-ng/ccu_common.c b/drivers/clk/sunxi-ng/ccu_common.c index 1c083b4d0b7e..43d8eca6abee 100644 --- a/drivers/clk/sunxi-ng/ccu_common.c +++ b/drivers/clk/sunxi-ng/ccu_common.c @@ -114,7 +114,7 @@ static int sunxi_ccu_probe(struct sunxi_ccu *ccu, struct device *dev, const struct sunxi_ccu_desc *desc) { struct ccu_reset *reset; - int i, ret; + int i, j, ret; ccu->desc = desc; @@ -130,8 +130,8 @@ static int sunxi_ccu_probe(struct sunxi_ccu *ccu, struct device *dev, cclk->lock = &ccu->lock; } - for (i = 0; i < desc->hw_clks->num ; i++) { - struct clk_hw *hw = desc->hw_clks->hws[i]; + for (j = 0; j < desc->hw_clks->num ; j++) { + struct clk_hw *hw = desc->hw_clks->hws[j]; const char *name; if (!hw) @@ -143,7 +143,7 @@ static int sunxi_ccu_probe(struct sunxi_ccu *ccu, struct device *dev, else ret = of_clk_hw_register(node, hw); if (ret) { - pr_err("Couldn't register clock %d - %s\n", i, name); + pr_err("Couldn't register clock %d - %s\n", j, name); goto err_clk_unreg; } } @@ -186,8 +186,8 @@ static int sunxi_ccu_probe(struct sunxi_ccu *ccu, struct device *dev, err_del_provider: of_clk_del_provider(node); err_clk_unreg: - while (--i >= 0) { - struct clk_hw *hw = desc->hw_clks->hws[i]; + while (--j >= 0) { + struct clk_hw *hw = desc->hw_clks->hws[j]; if (!hw) continue;