From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f169.google.com (mail-oi1-f169.google.com [209.85.167.169]) (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 CF12525D1FB for ; Wed, 11 Jun 2025 22:42:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.169 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749681766; cv=none; b=IiHai2PZuMFLq8QfYSdnNUxDYzUhwhrQspAx7SCejp+FxIWAz8hdY91uvqFm1fYZrOboVLUa+tSYPE+8Xedwz4mrWQ4SAju5aKEwUcAkYl3DDUU1l8evKm7nzqEWZZSTFKvGoOUr8A7C288IZslwbODTDiOprlMWSYZioextxY0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749681766; c=relaxed/simple; bh=5XDESMLoIhQpWzCEq2C2tgUyVZF/Bo3//3/twALhLps=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=nTQCkjdiS1Q457RxbolXJUxVWHC4di51qz1Cui6KtudA1gBaX/7U/9+GhJeCcmlKu1/rU4O+aE598eCO3ATJSEs+8awa939sRzDzr0TAjmi5VyGBswbJiE8Rd2D7l/F0hgwg4AxMCqdgpBzSJKUWaYTmNClSMjiukuXnmv+Op00= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=Yce5wZl8; arc=none smtp.client-ip=209.85.167.169 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="Yce5wZl8" Received: by mail-oi1-f169.google.com with SMTP id 5614622812f47-406e31162c6so124085b6e.2 for ; Wed, 11 Jun 2025 15:42:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1749681763; x=1750286563; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=grWWpqkFx3VZeZHS3cu1IgF+mji/0suRYvkUNQaAo2M=; b=Yce5wZl8NcnZGnXze45VBERPr+GdgfJgXDu7W9+7O4mlSOhmYWuxbahAMR1pItW4i8 9+yHbhjovbPzZHhuOlYaQci78vz8qG6/bDxUmFWNFpgcAullMt8hGbJn1vnel76/k1B/ 1nNrDk8c21rGaY/YeBedGXngZhsNqD3vhYUrfLjm/INZ6smdulVAGnuxzCAOi6iPpOd/ H2pld/c6Qflx/mTKkqVbKU7KfrHikYVhnIKBF8dbyziI8LW1fTNwO6mCF1KQl2K0HUme QhobR4Eo1OvYEshoAar2aHkp8sxl4z93Ve3DKmHQAd1ViyJW2xBU1P4rWbpL4Gv3yevh xbEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749681763; x=1750286563; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=grWWpqkFx3VZeZHS3cu1IgF+mji/0suRYvkUNQaAo2M=; b=WXON6yCBvLVdOHvEjZGsrWRZ02OxprCGsAntlpHkmhx8eXwTNwo3RTLS5iGrgUVsro 6XTMncc2dp2H+GCm2xmoUM/5ApXbmid6Fx6zW8Xc73mZTNPW832djYZw97rrUSJLKCDh Y4OM+zGMkbq+TzelZNbFbAFo/TmQ24w9J5aGsFnrNSH8hdb4W3XFKFxc5HkD/e29bR6w 3L2VDOucxNn17/7vck1DK1J2mojdef3zm2lFgZ+mN3NscIbY0ny2sVJkvRmtyQ3hLABU jiBIbexL0jto65evuc2UI/83KH05Wi1CwHwlQjXK3S+KfxJRPcNrvlHyIZ511CY78yZ1 Gx4A== X-Gm-Message-State: AOJu0Yzn1atdvTXz3WEDoMjmWnxTaL48np+5Qm/2bETJbJeRtKvC/HVn C5B2k7CYBqKl1mbhd2oIilAHvEG4yN1ogodH5eq7HRL0M1J6mmLYZ2iPa8U5XVk6kaI= X-Gm-Gg: ASbGncugVOXcEwZNI7okUTkVUGo/rSSc0MA/kRHvak1HJOxFcaYhRI+sv+aXZyN4SgF +RS66PiFsFN3Sb1cpzk0IK2nXn3hfEkKgR47mf/Gf00/S6mtFQ8ocMxmNGREsZqQx4yKMjS1bfc R43Uspryuj+gBnE1DUObZBeob+fYVTXbyCWG5298VXgcRbKLl8MkfJ3sW54nEYvwZn+sXt2gLNs RJGTOVnDFbUgUIktYKFxylvTuApSCoL+fkR6CXLktPQoZ4xoHukHo19fYI8ChVqPGJpOTbxkGPk ftfTaap1wBBkMgkXx64O7lCsB9eIIzLeX55ooxU2f43eV3Am+MVVmQfY3P9lhNksmNdtpG6RCnr jC6s= X-Google-Smtp-Source: AGHT+IEcwqu4j736p3LcoP9RK7c1t3h3vtLigrmQmQXvolB9PCLNg9UOQOYCbdmCSMZJHTC5173d2A== X-Received: by 2002:a05:6808:178d:b0:409:f8e:72a4 with SMTP id 5614622812f47-40a5d05e776mr3722453b6e.2.1749681762900; Wed, 11 Jun 2025 15:42:42 -0700 (PDT) Received: from [127.0.1.1] ([2600:8803:e7e4:1d00:4753:719f:673f:547c]) by smtp.gmail.com with ESMTPSA id 5614622812f47-40a682fbf05sm24684b6e.32.2025.06.11.15.42.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Jun 2025 15:42:42 -0700 (PDT) From: David Lechner Date: Wed, 11 Jun 2025 17:39:05 -0500 Subject: [PATCH 13/28] iio: chemical: scd30: use = { } instead of memset() Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250611-iio-zero-init-stack-with-instead-of-memset-v1-13-ebb2d0a24302@baylibre.com> References: <20250611-iio-zero-init-stack-with-instead-of-memset-v1-0-ebb2d0a24302@baylibre.com> In-Reply-To: <20250611-iio-zero-init-stack-with-instead-of-memset-v1-0-ebb2d0a24302@baylibre.com> To: Michael Hennerich , Lars-Peter Clausen , Jonathan Cameron , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Matthias Brugger , AngeloGioacchino Del Regno , Heiko Stuebner , Maxime Coquelin , Alexandre Torgue , Francesco Dolcini , =?utf-8?q?Jo=C3=A3o_Paulo_Gon=C3=A7alves?= , =?utf-8?q?Leonard_G=C3=B6hrs?= , kernel@pengutronix.de, Oleksij Rempel , Roan van Dijk , Tomasz Duszynski , Jacopo Mondi , Jean-Baptiste Maneyrol , Mudit Sharma , Javier Carrasco , =?utf-8?q?Ond=C5=99ej_Jirman?= , Andreas Klinger , Petre Rodan Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, David Lechner X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1024; i=dlechner@baylibre.com; h=from:subject:message-id; bh=5XDESMLoIhQpWzCEq2C2tgUyVZF/Bo3//3/twALhLps=; b=owEBbQGS/pANAwAKAcLMIAH/AY/AAcsmYgBoSgXZRwKjwWR/y52G6u0y4MdHz3+z3OU7EB2di 1dhrLGz2YmJATMEAAEKAB0WIQTsGNmeYg6D1pzYaJjCzCAB/wGPwAUCaEoF2QAKCRDCzCAB/wGP wMtsCACJ/xWk2LPxNgDVgxzxAyBLwPF0PwZ+uQ2OnVZ/GKv4J2FuZDLTEK8T1XbSMOtLfNe3Emp g1WSmomvx01TlhG5cJCNgELnTbtZDAKvzuZ3aJ0YaAlab0axLhbvOxxqK5KcfI7G1vuzwrVwjRD txipOkAWnZ1mGS1U0hXSv4oYKB16S5Z56mkqqgOjtzjZEb1+YGybjl73FD3eN1K5SYYrp2Z6aqV glfuOs3MYd4xbj9SpdPMC+zKvBKyjga031caed8DL3D7MvrboWa/CoWmmIAJfMRFoeO2+yr84yT zqstaruPKxBUMHnLEBtRUeoXXFrx6mJM3kA7FDJl/xC7bJkC X-Developer-Key: i=dlechner@baylibre.com; a=openpgp; fpr=8A73D82A6A1F509907F373881F8AF88C82F77C03 Use { } instead of memset() to zero-initialize stack memory to simplify the code. Signed-off-by: David Lechner --- drivers/iio/chemical/scd30_core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iio/chemical/scd30_core.c b/drivers/iio/chemical/scd30_core.c index 8316720b1fa32b9746b4aeefe7aedc77b3ba57e6..5df1926cd5d985a60c7095f692a63093d522d434 100644 --- a/drivers/iio/chemical/scd30_core.c +++ b/drivers/iio/chemical/scd30_core.c @@ -587,7 +587,7 @@ static irqreturn_t scd30_trigger_handler(int irq, void *p) struct { int data[SCD30_MEAS_COUNT]; aligned_s64 ts; - } scan; + } scan = { }; int ret; mutex_lock(&state->lock); @@ -595,7 +595,6 @@ static irqreturn_t scd30_trigger_handler(int irq, void *p) ret = scd30_read_poll(state); else ret = scd30_read_meas(state); - memset(&scan, 0, sizeof(scan)); memcpy(scan.data, state->meas, sizeof(state->meas)); mutex_unlock(&state->lock); if (ret) -- 2.43.0