From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f53.google.com (mail-pj1-f53.google.com [209.85.216.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 858813939A0 for ; Mon, 9 Mar 2026 23:28:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773098904; cv=none; b=kVy/XS9qpzWjkES9Fwoxe3t3f6Uyp4M+nyW2k0l7n8DzNZD+KY4pC+G092TzRoZZ9PtYAd4wfZkdKz4IF7vjeH17XkMIsqj76hVyYa0yF4PFnzM6uMr4cwx3UKaybrqlBhJ4INwMXiZeigzJwYnf8S6SSp819/9KkbaN4e9a9Mk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773098904; c=relaxed/simple; bh=MWbUKB2ezRImDoJVgS2/+wEVlNLF38LUmNJhx9sh7GI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ZQl5mF5VjRWEXnVnBDa4IcTeSW95bty6MxGYyHdkUHnHffld5f7T9MjPbd8dJ8MWF/oCLFVWf45C7B0Qj2ChL5547z+4EETXildLy/TYDEdGNZNRbhxP5G2XnTxtio0jP9fXM7rnP3D7Ngo5ZnS8u2CBO2sc+8qEQuUXZ4IFYeE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=kYCCQJJr; arc=none smtp.client-ip=209.85.216.53 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="kYCCQJJr" Received: by mail-pj1-f53.google.com with SMTP id 98e67ed59e1d1-358e3cc5e7eso5894053a91.0 for ; Mon, 09 Mar 2026 16:28:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1773098903; x=1773703703; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=zThsLLueEsXMRUWwQCRT0ylC/fnc8iJ8IJ/w6hvboLo=; b=kYCCQJJrpau+WlSNWNvtEUJQIP8deY/OVMDAr3myKg7j9Caj419udngtZUuU3oiowh 0KkjppEdxBpeHu258CKto2eESaEoIq2Zck8sFCB0xyowGnQwT482LU2bXX5IdYh/+BjL Azj6sw9EvGHZQON+9gy4kqMOJshzuHIdNvJ2LW7uIJpSpYuxIU7/m9epfGK+1hENTBY7 qaPtgXF+ElnUL2MhZCjaJ/Rk3CiLHaGNHfAYSHL++jTWzkrk4IedaNEhScR5SxvUdQIp 6D6Fp9llhcgsdXPMBcvVtziyHaNr7fLvIo4xsjmqBOyXXjtC4SUwRqpmi81OMnqGRxrE BupA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1773098903; x=1773703703; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=zThsLLueEsXMRUWwQCRT0ylC/fnc8iJ8IJ/w6hvboLo=; b=OLuaQrKnZ2mWqGrpOkivsbu+AwQIfSmoQMsAS6waNzBqP9mf7ELjJiB2szcsoWXW1d CgE4qwSn7P0qVyGv4O6mAxiq51mWMBQbjQCJSzzZsbt+oz7w5I/Wn2yNn4VgGc0SR0bS FGEh+sBIl4XK+V13Uo3T+kTYvB39rbmwKvL4OOoQvypMj50Tu4551wZdFpDj15SOW+LA J2672/xpFIKKfOuU+MzpHmIXK99OLvzGruYCVNO2d+JifvfSMDnImrIB8sKtOiVT5J/P BQDFWIqZf6pli19sy9TF09e8Tzq6U8+w2i/Uj5vaNR11qM1JfZynghmxzB/atYzvpPSf dJTg== X-Forwarded-Encrypted: i=1; AJvYcCW9DbylShRAJ9wXA7ft/QFmiazn4+xwhTK2mR0aY1jT0fNeyZDcxc0BQqEIlwmT543nYTayZ4iejkNpcg==@vger.kernel.org X-Gm-Message-State: AOJu0YybqC3jmjwRD3Suu1c7jxlJQN/GusGP0FhWuJjwj94lkvjZE5z7 l4lmY3n6eyERIeaamB48uWAiu0RmpbBOdy7CVaq8u0qM26XOjpbq8ceKdnpT7IKaxOk= X-Gm-Gg: ATEYQzxHM8S4+6qrfn7/ew/RBkQdBJX/G+aDtW5+xbSx9TlJbzh2WTywjWKWjErgAYW VbYuqeYLmK+4n0YgIKcfk23Oy7vgtG2dEQffmJuyUsfAOkDEDT11pgiGcvhsOu2WUVE2j3XO4YL X9FqBDcufPC65mc4PHS7p+kQiIiL1OJNXNNNoqLqoEdZmiq47msRmRnJk5XMB/DoSgzFwRqy26A BTrIexBWTgAHWLGpy9aalharX+A5JaYQMppcI3z32Z+PzDcP6jgOh7f3tW6IrbA1/z5Ssx2G70L UdJZ4Bui3jXYKeeX2WSzIhd00x8EdfSAhgFqWAlgMkSzhGgdER6kYAE7Vrlf/IMb1Q1zZ93y5gm xXiY4kRJOPbS7Ew80vBjqrPhRxnzub5RxX77BauoJp2fS2UGTDUcfZLvAQwSEbeu/oCa54Z+oGR 2rVpgh1ZgaZFcvt0+StlyCH6yQAxePBbIVbXPfGZzsJcjpHQRsBXUSOA== X-Received: by 2002:a17:903:ac4:b0:2a7:d42f:7065 with SMTP id d9443c01a7336-2ae824dd11dmr127212465ad.27.1773098902876; Mon, 09 Mar 2026 16:28:22 -0700 (PDT) Received: from ryzen ([2601:644:8000:56f5::8bd]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ae83f9678fsm130423725ad.68.2026.03.09.16.28.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Mar 2026 16:28:22 -0700 (PDT) From: Rosen Penev To: linux-gpio@vger.kernel.org Cc: Linus Walleij , linux-hardening@vger.kernel.org, gustavoars@kernel.org, Bartosz Golaszewski , Thierry Reding , Jonathan Hunter , Kees Cook , linux-tegra@vger.kernel.org (open list:TEGRA ARCHITECTURE SUPPORT), linux-kernel@vger.kernel.org (open list) Subject: [PATCH] gpio: tegra186: allocate irqs with the main struct Date: Mon, 9 Mar 2026 16:28:04 -0700 Message-ID: <20260309232804.331882-1-rosenp@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Remove an extra kcalloc call by using a flexible array member. Add __counted_by for extra runtime analysis. Assign counting variable immediately after allocation as required by __counted_by. Signed-off-by: Rosen Penev --- drivers/gpio/gpio-tegra186.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/drivers/gpio/gpio-tegra186.c b/drivers/gpio/gpio-tegra186.c index fb26402b6c47..aa7c3e44234f 100644 --- a/drivers/gpio/gpio-tegra186.c +++ b/drivers/gpio/gpio-tegra186.c @@ -125,7 +125,6 @@ struct tegra_gpio_soc { struct tegra_gpio { struct gpio_chip gpio; unsigned int num_irq; - unsigned int *irq; const struct tegra_gpio_soc *soc; unsigned int num_irqs_per_bank; @@ -133,6 +132,8 @@ struct tegra_gpio { void __iomem *secure; void __iomem *base; + + unsigned int irq[] __counted_by(num_irq); }; static const struct tegra_gpio_port * @@ -859,10 +860,16 @@ static int tegra186_gpio_probe(struct platform_device *pdev) char **names; int node, err; - gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); + err = platform_irq_count(pdev); + if (err < 0) + return err; + + gpio = devm_kzalloc(&pdev->dev, struct_size(gpio, irq, err), GFP_KERNEL); if (!gpio) return -ENOMEM; + gpio->num_irq = err; + gpio->soc = device_get_match_data(&pdev->dev); gpio->gpio.label = gpio->soc->name; gpio->gpio.parent = &pdev->dev; @@ -889,21 +896,10 @@ static int tegra186_gpio_probe(struct platform_device *pdev) if (IS_ERR(gpio->base)) return PTR_ERR(gpio->base); - err = platform_irq_count(pdev); - if (err < 0) - return err; - - gpio->num_irq = err; - err = tegra186_gpio_irqs_per_bank(gpio); if (err < 0) return err; - gpio->irq = devm_kcalloc(&pdev->dev, gpio->num_irq, sizeof(*gpio->irq), - GFP_KERNEL); - if (!gpio->irq) - return -ENOMEM; - for (i = 0; i < gpio->num_irq; i++) { err = platform_get_irq(pdev, i); if (err < 0) -- 2.53.0