From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DDEE2C55184 for ; Tue, 4 Aug 2026 11:35:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:To:From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=z2MS7R1XquFI5ZgUyt7volv7TIDP5Jo6QUDiJmnMvlE=; b=Ok9LDMfPTzXdVP5jQ84jwzJ3YQ AFMZ76DpWKOycPphmbA5a3oiDqYxwVWwMruAfKgqMfMDnSwtvSjYEn/gOe4YcTudlm4m5+U30JTm9 MxFf3tNQDsw0GsP6+Uia+ZJbJmTfjb0hmtKMK5YjZm3x1GCUjBAOcfBoDNJqHSXTm3wef2/kEDd73 pCKWHOEk+fP504pVD+bO2Yno1fD+D+7RsQR24RZBzgqfQJKpa6hkMfjkj+5lEsupbHXJ/XGgp7UCJ ++pjdaX1chjl/hyXajCcfaB6zci7ehrgag3sj4bX/HuaFNQB5/gBS+jUP1KxTpUoEaIAyN0A+ZaUy LLSB7SSQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wrDQ2-00000001i1Q-49hC; Tue, 04 Aug 2026 11:34:50 +0000 Received: from esa.microchip.iphmx.com ([68.232.154.123]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wrDQ0-00000001hzs-2Bpz for linux-arm-kernel@lists.infradead.org; Tue, 04 Aug 2026 11:34:49 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1785843288; x=1817379288; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=HAGc0aQvGQ6xckPzuGtbesPxW4BhT95FbIaJJrF46dg=; b=HrO/n72YOgoj6IKC5vRMCBvoaRV3WEFAutdeL4b2xRh6BTOIn/EmytLk RNQH/zbWcq8kGuDIHbvasxoQcLKXfbe5WEKDN89Nod25+IXpKQORz1iLd ZCraQGWoLOCNFHVeBliXcRuheAG0KzPkfszylXMecT97xVcfxjpWYiR0V 8J6YtKNKzs6yEW2ymROHE6EG3+NC1Zm14rRcn2dbzOKqkT2qQvCtzfgKa g34JNNr23FDXpYRKEDP43EgIft0iewTeHlU5yNsfsLRWxKI/itbMOvMVo 2gOWLFTU0iRua1QU6MrTa/M78NjXN1UvFhnVkyleAtaDkhOc5CMHkf921 w==; X-CSE-ConnectionGUID: hQ0YnYp7SQGjHFa3FSHSsg== X-CSE-MsgGUID: nSraFaAjTEum1TRTSW9ddw== X-IronPort-AV: E=Sophos;i="6.25,204,1779174000"; d="scan'208";a="61934860" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Aug 2026 04:34:47 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.87.71) by chn-vm-ex1.mchp-main.com (10.10.87.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.45; Tue, 4 Aug 2026 04:34:47 -0700 Received: from che-ll-i67070.microchip.com (10.10.85.11) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Tue, 4 Aug 2026 04:34:36 -0700 From: Varshini Rajendran To: , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v5 05/17] iio: adc: at91-sama5d2_adc: add condition to validate calibration data Date: Tue, 4 Aug 2026 17:03:26 +0530 Message-ID: <20260804113338.261782-6-varshini.rajendran@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260804113338.261782-1-varshini.rajendran@microchip.com> References: <20260804113338.261782-1-varshini.rajendran@microchip.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260804_043448_618616_C995B2EF X-CRM114-Status: GOOD ( 11.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add additional condition to validate the calibration data read from the NVMEM cell using the TAG of the packet. Signed-off-by: Varshini Rajendran --- drivers/iio/adc/at91-sama5d2_adc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 82db8f2f4db0..5b21367cf6b4 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -2297,7 +2297,8 @@ static int at91_adc_temp_sensor_init(struct at91_adc_state *st, return dev_err_probe(dev, PTR_ERR(buf), "Failed to read calibration data!\n"); - if (len < layout->min_len * sizeof(*buf)) { + if (len < layout->min_len * sizeof(*buf) || + buf[layout->tag_idx] != AT91_TEMP_CALIB_TAG_ACST) { dev_err(dev, "Invalid calibration data!\n"); return -EINVAL; } -- 2.34.1