From patchwork Mon Mar 20 14:57:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13181404 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 A81EDC6FD1D for ; Mon, 20 Mar 2023 14:58:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=E+HXKcJMinWqKLU9T7yDwjpYRvmzrpPYVtKFY2jD97A=; b=gzuUUge5BO3h4W FpAfwamcoSJkl/qJ7ne2QTw1PmC3tfB1Arq4KecnECoEquJyzpFJHwNlNc1sjLPMCuN3Hf69upNYn IXifICBh2+Gh8pKrOdTNVAh92dln+NSORW/vGOHmUJczPhvvxED90zyqxAdELJMLCHMl+YTjCFVll /qmRaJ3VO2S999WiN9xx9agoydqtQzUtPiUymRbtxudIcPAwaa1uVlqp+oCengpBFC3Tc5zDKUUQB XO8ZLDmvEbke7kaoVCa6AOtWXIyzlXl3OU5JGpfeBbOMtc547K7dsgmutXprjPZe8AlneUKfDwPgP DG24TMOrU8bFDCcBRS5A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1peGwy-009QEF-26; Mon, 20 Mar 2023 14:57:28 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1peGwv-009QCj-39 for linux-arm-kernel@lists.infradead.org; Mon, 20 Mar 2023 14:57:27 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 888FDFEC; Mon, 20 Mar 2023 07:58:06 -0700 (PDT) Received: from e127643.arm.com (unknown [10.57.18.95]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 7AF033F71E; Mon, 20 Mar 2023 07:57:19 -0700 (PDT) From: James Clark To: linux-kernel@vger.kernel.org, linux@roeck-us.net, michal.simek@amd.com, Jonathan.Cameron@huawei.com Cc: James Clark , Jonathan Corbet , Jean Delvare , Anand Ashok Dumbre , Jonathan Cameron , Lars-Peter Clausen , Michal Simek , Andy Gross , Bjorn Andersson , Konrad Dybcio , Greg Kroah-Hartman , Jiri Slaby , linux-doc@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org Subject: [PATCH v3 1/4] devres: Provide krealloc_array Date: Mon, 20 Mar 2023 14:57:06 +0000 Message-Id: <20230320145710.1120469-2-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230320145710.1120469-1-james.clark@arm.com> References: <20230320145710.1120469-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230320_075726_072703_1A2AB1A9 X-CRM114-Status: UNSURE ( 7.81 ) X-CRM114-Notice: Please train this message. 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 There is no krealloc_array equivalent in devres. Users would have to do their own multiplication overflow check so provide one. Reviewed-by: Jonathan Cameron Signed-off-by: James Clark --- Documentation/driver-api/driver-model/devres.rst | 1 + include/linux/device.h | 11 +++++++++++ 2 files changed, 12 insertions(+) diff --git a/Documentation/driver-api/driver-model/devres.rst b/Documentation/driver-api/driver-model/devres.rst index 4249eb4239e0..8be086b3f829 100644 --- a/Documentation/driver-api/driver-model/devres.rst +++ b/Documentation/driver-api/driver-model/devres.rst @@ -364,6 +364,7 @@ MEM devm_kmalloc_array() devm_kmemdup() devm_krealloc() + devm_krealloc_array() devm_kstrdup() devm_kstrdup_const() devm_kvasprintf() diff --git a/include/linux/device.h b/include/linux/device.h index 1508e637bb26..4dce92e99d08 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -223,6 +223,17 @@ static inline void *devm_kcalloc(struct device *dev, { return devm_kmalloc_array(dev, n, size, flags | __GFP_ZERO); } +static inline __realloc_size(3, 4) void * __must_check +devm_krealloc_array(struct device *dev, void *p, size_t new_n, size_t new_size, gfp_t flags) +{ + size_t bytes; + + if (unlikely(check_mul_overflow(new_n, new_size, &bytes))) + return NULL; + + return devm_krealloc(dev, p, bytes, flags); +} + void devm_kfree(struct device *dev, const void *p); char *devm_kstrdup(struct device *dev, const char *s, gfp_t gfp) __malloc; const char *devm_kstrdup_const(struct device *dev, const char *s, gfp_t gfp); From patchwork Mon Mar 20 14:57:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13181405 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 44109C7618A for ; Mon, 20 Mar 2023 14:58:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=avDMah+YfjFtwtaiblEXhQoFbju7lYEIWXOm0SIC6js=; b=ux43Clz4Ab96L4 h7xYquJqEzwlx8pUbR6FgOx83yJ+Afr7VwsvKeymoRtZtv/HIQf03JBuv77e6lp9F8DrjiwQJUIJG Jss3jDPRzFDnyizY8N82PTAfjGUc4+tCFZKGiZUuOis5u8X2m8FdCZZ97Rnb1X+S/nKAlG4YRHc0y HsEXpoj26MBIkkm6rG+wfE0Ad8ZRr2dVUEyr56O43zxcVXRxD5Jpd2KRnzmUjmYJbTSlpeOaVaVbY /wodoq7rK3XfsoljnYa2wRs2iFJeGobewtYghiaGMDCEF5poUqIJjzw7HR8tvFi8YVKxdrFVY9Sl5 Xcd4bBMCEgK3JPPHrgNQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1peGx6-009QJC-2z; Mon, 20 Mar 2023 14:57:36 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1peGwy-009QE9-3C for linux-arm-kernel@lists.infradead.org; Mon, 20 Mar 2023 14:57:30 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 71DAF1042; Mon, 20 Mar 2023 07:58:10 -0700 (PDT) Received: from e127643.arm.com (unknown [10.57.18.95]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5A17C3F71E; Mon, 20 Mar 2023 07:57:23 -0700 (PDT) From: James Clark To: linux-kernel@vger.kernel.org, linux@roeck-us.net, michal.simek@amd.com, Jonathan.Cameron@huawei.com Cc: James Clark , Jonathan Corbet , Jean Delvare , Anand Ashok Dumbre , Jonathan Cameron , Lars-Peter Clausen , Michal Simek , Andy Gross , Bjorn Andersson , Konrad Dybcio , Greg Kroah-Hartman , Jiri Slaby , linux-doc@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org Subject: [PATCH v3 2/4] hwmon: pmbus: Use devm_krealloc_array Date: Mon, 20 Mar 2023 14:57:07 +0000 Message-Id: <20230320145710.1120469-3-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230320145710.1120469-1-james.clark@arm.com> References: <20230320145710.1120469-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230320_075729_088737_1C752A28 X-CRM114-Status: GOOD ( 10.74 ) 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 Now that it exists, use it instead of doing the multiplication manually. Acked-by: Guenter Roeck Reviewed-by: Jonathan Cameron Signed-off-by: James Clark --- drivers/hwmon/pmbus/pmbus_core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 95e95783972a..e7bee25a3706 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -1190,9 +1190,9 @@ static int pmbus_add_attribute(struct pmbus_data *data, struct attribute *attr) { if (data->num_attributes >= data->max_attributes - 1) { int new_max_attrs = data->max_attributes + PMBUS_ATTR_ALLOC_SIZE; - void *new_attrs = devm_krealloc(data->dev, data->group.attrs, - new_max_attrs * sizeof(void *), - GFP_KERNEL); + void *new_attrs = devm_krealloc_array(data->dev, data->group.attrs, + new_max_attrs, sizeof(void *), + GFP_KERNEL); if (!new_attrs) return -ENOMEM; data->group.attrs = new_attrs; From patchwork Mon Mar 20 14:57:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13181406 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 BD053C7618D for ; Mon, 20 Mar 2023 14:58:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=VhzUYLFAXflBm443AO0ERJrALm7g4iE4eRJxic0rmqE=; b=Whfy56GWRCQVKJ EGBFf/9HPKoLmwvkxyoyWH13iXhX/Kd7ugp3yuWCjIVzkcQ6h3EYsmbSaO/jGBGh2cpVt2UO9tgsG L9oLleiOQoM5xOMyBPtrBQaoeDcFA6Hclw0iXpxmk4yacZssixJj6Q2RwCw/ddP/sSDDlx0azdXPd uhrh7kW7+lQ/T73WWDvSD9+/j810gwiPFT4PrjbWAga8IxPWruvz5UAs6IHn3PzjpU8ifdncyxTdQ BfgQ4ebmrAVUAQYMHMvsdBvLQPd3YE5GraOvIYfepoEsFWjmIbBKdw0CG7pLXAE7fTO7ltBL3Jitf KM6Rx/fUcF9xcHEwbk6A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1peGx9-009QKQ-0r; Mon, 20 Mar 2023 14:57:39 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1peGx2-009QGZ-2W for linux-arm-kernel@lists.infradead.org; Mon, 20 Mar 2023 14:57:34 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5B4A0106F; Mon, 20 Mar 2023 07:58:14 -0700 (PDT) Received: from e127643.arm.com (unknown [10.57.18.95]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 4D7023F71E; Mon, 20 Mar 2023 07:57:27 -0700 (PDT) From: James Clark To: linux-kernel@vger.kernel.org, linux@roeck-us.net, michal.simek@amd.com, Jonathan.Cameron@huawei.com Cc: James Clark , Jonathan Corbet , Jean Delvare , Anand Ashok Dumbre , Jonathan Cameron , Lars-Peter Clausen , Michal Simek , Andy Gross , Bjorn Andersson , Konrad Dybcio , Greg Kroah-Hartman , Jiri Slaby , linux-doc@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org Subject: [PATCH v3 3/4] iio: adc: Use devm_krealloc_array Date: Mon, 20 Mar 2023 14:57:08 +0000 Message-Id: <20230320145710.1120469-4-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230320145710.1120469-1-james.clark@arm.com> References: <20230320145710.1120469-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230320_075732_944879_FE788A93 X-CRM114-Status: GOOD ( 12.83 ) 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 Now that it exists, use it instead of doing the multiplication and checking for overflow manually. Reviewed-by: Jonathan Cameron Signed-off-by: James Clark --- drivers/iio/adc/xilinx-ams.c | 9 +++------ drivers/iio/adc/xilinx-xadc-core.c | 17 +++++++---------- 2 files changed, 10 insertions(+), 16 deletions(-) diff --git a/drivers/iio/adc/xilinx-ams.c b/drivers/iio/adc/xilinx-ams.c index 34cf336b3490..f0b71a1220e0 100644 --- a/drivers/iio/adc/xilinx-ams.c +++ b/drivers/iio/adc/xilinx-ams.c @@ -1263,7 +1263,7 @@ static int ams_parse_firmware(struct iio_dev *indio_dev) struct device *dev = indio_dev->dev.parent; struct fwnode_handle *child = NULL; struct fwnode_handle *fwnode = dev_fwnode(dev); - size_t ams_size, dev_size; + size_t ams_size; int ret, ch_cnt = 0, i, rising_off, falling_off; unsigned int num_channels = 0; @@ -1320,11 +1320,8 @@ static int ams_parse_firmware(struct iio_dev *indio_dev) } } - dev_size = array_size(sizeof(*dev_channels), num_channels); - if (dev_size == SIZE_MAX) - return -ENOMEM; - - dev_channels = devm_krealloc(dev, ams_channels, dev_size, GFP_KERNEL); + dev_channels = devm_krealloc_array(dev, ams_channels, num_channels, + sizeof(*dev_channels), GFP_KERNEL); if (!dev_channels) return -ENOMEM; diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c index 292f2892d223..dba73300f894 100644 --- a/drivers/iio/adc/xilinx-xadc-core.c +++ b/drivers/iio/adc/xilinx-xadc-core.c @@ -613,20 +613,17 @@ static int xadc_update_scan_mode(struct iio_dev *indio_dev, const unsigned long *mask) { struct xadc *xadc = iio_priv(indio_dev); - size_t new_size, n; + size_t n; void *data; n = bitmap_weight(mask, indio_dev->masklength); - if (check_mul_overflow(n, sizeof(*xadc->data), &new_size)) - return -ENOMEM; - - data = devm_krealloc(indio_dev->dev.parent, xadc->data, - new_size, GFP_KERNEL); + data = devm_krealloc_array(indio_dev->dev.parent, xadc->data, + n, sizeof(*xadc->data), GFP_KERNEL); if (!data) return -ENOMEM; - memset(data, 0, new_size); + memset(data, 0, n * sizeof(*xadc->data)); xadc->data = data; return 0; @@ -1281,9 +1278,9 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, unsigned int *conf, int irq) } indio_dev->num_channels = num_channels; - indio_dev->channels = devm_krealloc(dev, channels, - sizeof(*channels) * num_channels, - GFP_KERNEL); + indio_dev->channels = devm_krealloc_array(dev, channels, + num_channels, sizeof(*channels), + GFP_KERNEL); /* If we can't resize the channels array, just use the original */ if (!indio_dev->channels) indio_dev->channels = channels; From patchwork Mon Mar 20 14:57:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13181407 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 C6301C7618D for ; Mon, 20 Mar 2023 14:58:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; 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Mon, 20 Mar 2023 14:57:38 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 47E521063; Mon, 20 Mar 2023 07:58:18 -0700 (PDT) Received: from e127643.arm.com (unknown [10.57.18.95]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 2FEC73F71E; Mon, 20 Mar 2023 07:57:31 -0700 (PDT) From: James Clark To: linux-kernel@vger.kernel.org, linux@roeck-us.net, michal.simek@amd.com, Jonathan.Cameron@huawei.com Cc: James Clark , Jonathan Corbet , Jean Delvare , Anand Ashok Dumbre , Jonathan Cameron , Lars-Peter Clausen , Michal Simek , Andy Gross , Bjorn Andersson , Konrad Dybcio , Greg Kroah-Hartman , Jiri Slaby , linux-doc@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org Subject: [PATCH v3 4/4] serial: qcom_geni: Comment use of devm_krealloc rather than devm_krealloc_array Date: Mon, 20 Mar 2023 14:57:09 +0000 Message-Id: <20230320145710.1120469-5-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230320145710.1120469-1-james.clark@arm.com> References: <20230320145710.1120469-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230320_075735_744473_EEA37D12 X-CRM114-Status: UNSURE ( 9.22 ) X-CRM114-Notice: Please train this message. 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 Now that devm_krealloc_array is available, add a comment justifying not changing this occurrence to avoid any future auto fixups. Link: https://lore.kernel.org/all/20230318173402.20a4f60d@jic23-huawei/ Signed-off-by: James Clark Reviewed-by: Jonathan Cameron --- drivers/tty/serial/qcom_geni_serial.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index 28fbc927a546..8ae1fb7c2636 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -1055,6 +1055,11 @@ static int setup_fifos(struct qcom_geni_serial_port *port) (port->tx_fifo_depth * port->tx_fifo_width) / BITS_PER_BYTE; if (port->rx_buf && (old_rx_fifo_depth != port->rx_fifo_depth) && port->rx_fifo_depth) { + /* + * Use krealloc rather than krealloc_array because rx_buf is + * accessed as 1 byte entries as well as 4 byte entries so it's + * not necessarily an array. + */ port->rx_buf = devm_krealloc(uport->dev, port->rx_buf, port->rx_fifo_depth * sizeof(u32), GFP_KERNEL);