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[98.183.112.25]) by smtp.gmail.com with ESMTPSA id f10-20020a9d6c0a000000b006e454aa54d1sm806213otq.56.2024.03.01.12.25.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Mar 2024 12:25:49 -0800 (PST) From: David Lechner To: Mark Brown Cc: David Lechner , Michael Hennerich , =?utf-8?q?Nuno_S=C3=A1?= , Kees Cook , "Gustavo A. R. Silva" , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH 1/3] spi: axi-spi-engine: remove p from struct spi_engine_message_state Date: Fri, 1 Mar 2024 14:25:18 -0600 Message-ID: <20240301-mainline-axi-spi-engine-small-cleanups-v1-1-241dfd2a79f7@baylibre.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240301-mainline-axi-spi-engine-small-cleanups-v1-0-241dfd2a79f7@baylibre.com> References: <20240301-mainline-axi-spi-engine-small-cleanups-v1-0-241dfd2a79f7@baylibre.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.12.4 Content-Transfer-Encoding: quoted-printable The program pointer p in struct spi_engine_message_state in the AXI SPI Engine controller driver was assigned but never read so it can be removed. Signed-off-by: David Lechner Reviewed-by: Kees Cook --- drivers/spi/spi-axi-spi-engine.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/spi/spi-axi-spi-engine.c b/drivers/spi/spi-axi-spi-eng= ine.c index 6177c1a8d56e..d89f75170c9e 100644 --- a/drivers/spi/spi-axi-spi-engine.c +++ b/drivers/spi/spi-axi-spi-engine.c @@ -82,8 +82,6 @@ struct spi_engine_program { * struct spi_engine_message_state - SPI engine per-message state */ struct spi_engine_message_state { - /** @p: Instructions for executing this message. */ - struct spi_engine_program *p; /** @cmd_length: Number of elements in cmd_buf array. */ unsigned cmd_length; /** @cmd_buf: Array of commands not yet written to CMD FIFO. */ @@ -543,7 +541,6 @@ static int spi_engine_transfer_one_message(struct spi_c= ontroller *host, =20 /* reinitialize message state for this transfer */ memset(st, 0, sizeof(*st)); - st->p =3D p; st->cmd_buf =3D p->instructions; st->cmd_length =3D p->length; msg->state =3D st; --=20 2.43.2 From nobody Sun Feb 8 14:07:03 2026 Received: from mail-ot1-f54.google.com (mail-ot1-f54.google.com [209.85.210.54]) (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 1B9B83C48C for ; Fri, 1 Mar 2024 20:25:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709324752; cv=none; b=Cnr7Cc+CfIdxhFk79qgMqtkRKanZvRrOFjZBcYVkw2N1seejdGqyaH8xHTcP9vYKlEDqdocN+S2vLKJp0Utpu9YqGKByKZihxI5/z/Lz5Au8SXg1DEMXWyvGe5aCJvuhIr6s/suvoi93tIyhL0O3HnvSylRrCJ2e9CIqB9qAGNE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709324752; c=relaxed/simple; bh=Nwtado1oao3+/dr6Ja7f0D8y63CaM4wWirvmaJDankQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=i9GuvVjxN0aSzw++yI3J433/TQ/Jpni81kbTCTRcO8+7jxkfDizElRbFM/0NCm68WZAS4uRbUjNktm62OyzIg1vyLnqOT/1xwz0KiwvrC0j8fPFjKZ1PRCf6KqfC5HdTP2LfK+zS+gpStfVNbO3+mIVsy+AtPFh8ybTnTO7SCX8= 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=RDfXWhiN; arc=none smtp.client-ip=209.85.210.54 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="RDfXWhiN" Received: by mail-ot1-f54.google.com with SMTP id 46e09a7af769-6e47a9f4b70so1358035a34.1 for ; Fri, 01 Mar 2024 12:25:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1709324750; x=1709929550; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=N53sN/U1+xpmw3mnYyTxppc9z7x+jOYBw1SYOpnydHk=; b=RDfXWhiNKyfc+QRNMmfesLFDocNny9FbkTUtO7mNG3PQ1YF5IqSYMN56pwe0J7s3l7 Zp2zf3QEmYmM/T6IgzuPuB3fc9aVrWj7bUCZPyh2Uamq0BbeE45kHSoMZF2TE5DMer59 AFXoJ3TeDcQNlLrjbc+ZOa96RxX4fNC28ZFCm73hUp9E6lUz0AcMQV+K6+OeU+MOeVlv JZn12Byl4ovcBf/+opEoqWdUw6w9y8SVOJxoj2vnTJi39ip/cuGAKoxaBlOckXVnKyhl RWVNR/9NN8nomqrMpg4ZKYXcMn4fik1B2ggHCi/jTkidN8EHH519sx4AcAGeYf0X6yIS b7Aw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709324750; x=1709929550; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=N53sN/U1+xpmw3mnYyTxppc9z7x+jOYBw1SYOpnydHk=; b=Ub/5sqqV15r0whg/5sRGZa+9cljCuWnDPvdq692BRoqBtQ1shnkgHzI548cNj3qnPR qPvaeVa4jJwF1zAne4rfd4fr6nv3tu3xlcy2yfFHQxh20pc7+GE+Vh3AGrTi+d1BFz1P QBVKdmfMXZyu7L/86EkNAQUj6U3JaKlZoWdXw8F7T2X3qmDAgH5e/vNs4CCC/5XOKcMn ovKTcnbicwm7rGSIVZSv2q/WPP98A484xiqGrtKruFpPDhbBBygVtAW6X3/zGa4uoKXs o4jBI00TGCZfHt088BJYZPdLLltRsAoSf/o0l2cuTJ6w+ZrDJsHmymGQC5wwv0sODeJR fDKg== X-Forwarded-Encrypted: i=1; AJvYcCWyZOs9EvqWyytlqG44E2aCGOEv86R1IueeTMWCA+KBwuO+NA1wZ9LYDREmuSD8t8Y0El5i5FLHUc5OFZQybEWtU3IqsxYYcI8dAZ0D X-Gm-Message-State: AOJu0YzFNJO3mmyJdwpL+4TNIpCWXLADHyUTKMX21CYsoz9+HpI12cHc ipKvn1RfAMXsMFENI2aRgkmSTnjNdJeaLtCLmL1GLq7cXgWQHTL8pilbAuwYgxo= X-Google-Smtp-Source: AGHT+IGk9Oam5NAqD4qbTMwFeQNceja2+ofM48cakPFOdGJ3lIgV2fOupeQb0XQ09SKibb1/IWoN/w== X-Received: by 2002:a05:6830:39da:b0:6e4:d195:ce91 with SMTP id bt26-20020a05683039da00b006e4d195ce91mr1043577otb.19.1709324750356; Fri, 01 Mar 2024 12:25:50 -0800 (PST) Received: from freyr.lechnology.com (ip98-183-112-25.ok.ok.cox.net. [98.183.112.25]) by smtp.gmail.com with ESMTPSA id f10-20020a9d6c0a000000b006e454aa54d1sm806213otq.56.2024.03.01.12.25.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Mar 2024 12:25:49 -0800 (PST) From: David Lechner To: Mark Brown Cc: David Lechner , Michael Hennerich , =?utf-8?q?Nuno_S=C3=A1?= , Kees Cook , "Gustavo A. R. Silva" , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH 2/3] spi: axi-spi-engine: use __counted_by() attribute Date: Fri, 1 Mar 2024 14:25:19 -0600 Message-ID: <20240301-mainline-axi-spi-engine-small-cleanups-v1-2-241dfd2a79f7@baylibre.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240301-mainline-axi-spi-engine-small-cleanups-v1-0-241dfd2a79f7@baylibre.com> References: <20240301-mainline-axi-spi-engine-small-cleanups-v1-0-241dfd2a79f7@baylibre.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.12.4 Content-Transfer-Encoding: quoted-printable This adds the __counted_by() attribute to the flex array at the end of struct spi_engine_program in the AXI SPI Engine controller driver. Suggested-by: Nuno S=C3=A1 Signed-off-by: David Lechner --- drivers/spi/spi-axi-spi-engine.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-axi-spi-engine.c b/drivers/spi/spi-axi-spi-eng= ine.c index d89f75170c9e..e801eed820df 100644 --- a/drivers/spi/spi-axi-spi-engine.c +++ b/drivers/spi/spi-axi-spi-engine.c @@ -75,7 +75,7 @@ =20 struct spi_engine_program { unsigned int length; - uint16_t instructions[]; + uint16_t instructions[] __counted_by(length); }; =20 /** --=20 2.43.2 From nobody Sun Feb 8 14:07:03 2026 Received: from mail-ot1-f42.google.com (mail-ot1-f42.google.com [209.85.210.42]) (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 044593C689 for ; Fri, 1 Mar 2024 20:25:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709324753; cv=none; b=Q6F4jVhxQSLk/CuAAZ4STSEMDD9/9svTtaOCNgYpY5OKWr+WzHunnUD3uSkMdSg3KlMSArBpxe0erxx+yZ4jNGJPMDj9mIWH103cFYc02W7gdGE7yZUrW7Rk7tTVdNu4eE/J5ldwgomBIeBXpA7W4V6VhA2gJ/Cgx959x6A68uw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709324753; c=relaxed/simple; bh=r0GlreGLsYtbA/Nea/FJMUIpPOXUZxD98Y/U+q/kZ/k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=C8DE90rJw6J4LJsXx+0vvScxRYcC8Sf9Qoxzoj+zWiIFvbxjdXRLPPKlwOL0j19go7EUDCNpgBluk6g3xD4lpxUvd0fci+fgRBTo+9MrubAvHsetEmRoOxOdpb7Umv8cwc1IjpGY01dXYRKqZstUr24Tmh3tSM8+JVXHm1+vdsg= 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=i6GOcPL8; arc=none smtp.client-ip=209.85.210.42 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="i6GOcPL8" Received: by mail-ot1-f42.google.com with SMTP id 46e09a7af769-6e45ef83c54so1660742a34.2 for ; Fri, 01 Mar 2024 12:25:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1709324751; x=1709929551; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=r4uxZbt0qin0Wn8Pr+rE6EDCFD41pXx3sQye6WwUWzw=; b=i6GOcPL8AT1LAVXkhE7YUVgaLtFy2ynvq0/1YkUBJArcYTcaZkv6pMXSXoHiagensk G7h0+i4TW0z6uNSqwrp4tX9krzlD9+3ppTYXmQR/1JpwqCD12PfGhwNaUdutGJN4pgzl oHC062+S1jK8DA2IZkB7H4dyLthluYAr/0PeoJAXJ2Be+HfbQ8DIw75OiqUsjPSp/g3x VerqdUwMuORqDfOwFkzqDZEcb475OVihaVC7rlNkaewqViRLEhR7z4CnljE4t7A+FEsJ wx4grYg7cNZwWKhhdjmcf0pNG5MiMWDuw88f5zbt1wMcDGtzxxAsByD8KEXwuX60Edmq z21Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709324751; x=1709929551; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=r4uxZbt0qin0Wn8Pr+rE6EDCFD41pXx3sQye6WwUWzw=; b=BaflZagflUkTAHQiM8PHfOhAC1Xiu/HSU6guP+h5Icie0cIkN5XJroDN+oSx2Xrigd 4lsiXHSMhy3GhInKzJxHv2Wr/0t1fUEyFlNdrSQqup4Imb0fPz+WOaRfxjtkNclCWLQD I1o6WB03Lb0/8Ws05W+1KXgxTxd+qCVfOAm9pFvpxMEFT2BaNfgcziCqxgGk1YN1pKbQ 7CU32mHm5XQv1dXwkGOg7XdnsQdxqmRoGGqpxwdCQt1z0WGRoSNKSedJK8UXei+WyYgV ilUmu921U3dl5tGwJYL+dHAe4rbY3VCrjDM7uDzBZYDDlpNcmwK2CliHBQQI2w7lYiFO dqzg== X-Forwarded-Encrypted: i=1; AJvYcCUpU0sc5/OtT7QoKC2ezo2pv5PqzX3HlFFQNwyc3HwdFAc3s9+mVFhV0/A0clUEmHvK0LA6LzNskIqQiG5l+v3ickvVNMAh+oy1HwMD X-Gm-Message-State: AOJu0YxpzRWNHEFuj4hDBdgLYEUhRQi64zDUhDWitWNR0N478EaeuJsR 0RK9xlLutNdnX4wtuonEHCx+2H7BJPXsnRlsYRVTRs1jf7LEzytskRns2TcqVy8= X-Google-Smtp-Source: AGHT+IGOIf9N2e0j0sOh4gWwieqF/orAK7lWNJdnsL4VsiGKxZBiUNq+AipTLP8PSCm9ay/w98JPVg== X-Received: by 2002:a9d:6215:0:b0:6e2:baa2:42c8 with SMTP id g21-20020a9d6215000000b006e2baa242c8mr2925611otj.28.1709324751180; Fri, 01 Mar 2024 12:25:51 -0800 (PST) Received: from freyr.lechnology.com (ip98-183-112-25.ok.ok.cox.net. [98.183.112.25]) by smtp.gmail.com with ESMTPSA id f10-20020a9d6c0a000000b006e454aa54d1sm806213otq.56.2024.03.01.12.25.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Mar 2024 12:25:50 -0800 (PST) From: David Lechner To: Mark Brown Cc: David Lechner , Michael Hennerich , =?utf-8?q?Nuno_S=C3=A1?= , Kees Cook , "Gustavo A. R. Silva" , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, Christophe JAILLET Subject: [PATCH 3/3] spi: axi-spi-engine: use struct_size() macro Date: Fri, 1 Mar 2024 14:25:20 -0600 Message-ID: <20240301-mainline-axi-spi-engine-small-cleanups-v1-3-241dfd2a79f7@baylibre.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240301-mainline-axi-spi-engine-small-cleanups-v1-0-241dfd2a79f7@baylibre.com> References: <20240301-mainline-axi-spi-engine-small-cleanups-v1-0-241dfd2a79f7@baylibre.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.12.4 Content-Transfer-Encoding: quoted-printable This makes use of the struct_size() macro to calculate the size of the struct axi_spi_engine when allocating it. Suggested-by: Christophe JAILLET Signed-off-by: David Lechner Reviewed-by: Kees Cook --- drivers/spi/spi-axi-spi-engine.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-axi-spi-engine.c b/drivers/spi/spi-axi-spi-eng= ine.c index e801eed820df..9646764b0042 100644 --- a/drivers/spi/spi-axi-spi-engine.c +++ b/drivers/spi/spi-axi-spi-engine.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include =20 @@ -501,15 +502,13 @@ static irqreturn_t spi_engine_irq(int irq, void *devi= d) static int spi_engine_optimize_message(struct spi_message *msg) { struct spi_engine_program p_dry, *p; - size_t size; =20 spi_engine_precompile_message(msg); =20 p_dry.length =3D 0; spi_engine_compile_message(msg, true, &p_dry); =20 - size =3D sizeof(*p->instructions) * (p_dry.length + 1); - p =3D kzalloc(sizeof(*p) + size, GFP_KERNEL); + p =3D kzalloc(struct_size(p, instructions, p_dry.length + 1), GFP_KERNEL); if (!p) return -ENOMEM; =20 --=20 2.43.2