From patchwork Mon Mar 6 15:27:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 659361 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4A741C64EC4 for ; Mon, 6 Mar 2023 15:27:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230449AbjCFP1z (ORCPT ); Mon, 6 Mar 2023 10:27:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231284AbjCFP1s (ORCPT ); Mon, 6 Mar 2023 10:27:48 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 77F50311E6; Mon, 6 Mar 2023 07:27:40 -0800 (PST) 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 8B6B213D5; Mon, 6 Mar 2023 07:28:23 -0800 (PST) Received: from e127643.broadband (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 90B593F71A; Mon, 6 Mar 2023 07:27:37 -0800 (PST) From: James Clark To: linux-kernel@vger.kernel.org Cc: James Clark , Jonathan Corbet , Guenter Roeck , 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 1/4] devres: Provide krealloc_array Date: Mon, 6 Mar 2023 15:27:20 +0000 Message-Id: <20230306152723.3090195-2-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230306152723.3090195-1-james.clark@arm.com> References: <20230306152723.3090195-1-james.clark@arm.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org There is no krealloc_array equivalent in devres. Users would have to do their own multiplication overflow check so provide one. Signed-off-by: James Clark --- Documentation/driver-api/driver-model/devres.rst | 1 + include/linux/device.h | 10 ++++++++++ 2 files changed, 11 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..0dd5956c8516 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -223,6 +223,16 @@ 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 6 15:27:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 660668 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C206C6FD1C for ; Mon, 6 Mar 2023 15:28:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231367AbjCFP2E (ORCPT ); Mon, 6 Mar 2023 10:28:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229846AbjCFP1w (ORCPT ); Mon, 6 Mar 2023 10:27:52 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C48F3301A8; Mon, 6 Mar 2023 07:27:43 -0800 (PST) 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 E68521424; Mon, 6 Mar 2023 07:28:26 -0800 (PST) Received: from e127643.broadband (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E3A703F71A; Mon, 6 Mar 2023 07:27:40 -0800 (PST) From: James Clark To: linux-kernel@vger.kernel.org Cc: James Clark , Jonathan Corbet , Guenter Roeck , 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 2/4] hwmon: pmbus: Use devm_krealloc_array Date: Mon, 6 Mar 2023 15:27:21 +0000 Message-Id: <20230306152723.3090195-3-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230306152723.3090195-1-james.clark@arm.com> References: <20230306152723.3090195-1-james.clark@arm.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Now that it exists, use it instead of doing the multiplication manually. 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 6 15:27:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 659360 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF141C64EC4 for ; Mon, 6 Mar 2023 15:28:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231276AbjCFP2H (ORCPT ); Mon, 6 Mar 2023 10:28:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231263AbjCFP16 (ORCPT ); Mon, 6 Mar 2023 10:27:58 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 292C631E19; Mon, 6 Mar 2023 07:27:47 -0800 (PST) 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 49D8E143D; Mon, 6 Mar 2023 07:28:30 -0800 (PST) Received: from e127643.broadband (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 506183F71A; Mon, 6 Mar 2023 07:27:44 -0800 (PST) From: James Clark To: linux-kernel@vger.kernel.org Cc: James Clark , Jonathan Corbet , Guenter Roeck , 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 3/4] iio: adc: Use devm_krealloc_array Date: Mon, 6 Mar 2023 15:27:22 +0000 Message-Id: <20230306152723.3090195-4-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230306152723.3090195-1-james.clark@arm.com> References: <20230306152723.3090195-1-james.clark@arm.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Now that it exists, use it instead of doing the multiplication and checking for overflow manually. 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..287df3bb951e 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 6 15:27:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 660667 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5508FC6FA99 for ; Mon, 6 Mar 2023 15:28:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231410AbjCFP2M (ORCPT ); Mon, 6 Mar 2023 10:28:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48858 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231285AbjCFP16 (ORCPT ); Mon, 6 Mar 2023 10:27:58 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 8285B30E9A; Mon, 6 Mar 2023 07:27:50 -0800 (PST) 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 A510E12FC; Mon, 6 Mar 2023 07:28:33 -0800 (PST) Received: from e127643.broadband (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id A26133F71A; Mon, 6 Mar 2023 07:27:47 -0800 (PST) From: James Clark To: linux-kernel@vger.kernel.org Cc: James Clark , Jonathan Corbet , Guenter Roeck , 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 4/4] serial: qcom_geni: Use devm_krealloc_array Date: Mon, 6 Mar 2023 15:27:23 +0000 Message-Id: <20230306152723.3090195-5-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230306152723.3090195-1-james.clark@arm.com> References: <20230306152723.3090195-1-james.clark@arm.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Now that it exists, use it instead of doing the multiplication manually. Signed-off-by: James Clark --- drivers/tty/serial/qcom_geni_serial.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index d69592e5e2ec..23fc33d182ac 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -1056,9 +1056,9 @@ 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) { - port->rx_buf = devm_krealloc(uport->dev, port->rx_buf, - port->rx_fifo_depth * sizeof(u32), - GFP_KERNEL); + port->rx_buf = devm_krealloc_array(uport->dev, port->rx_buf, + port->rx_fifo_depth, sizeof(u32), + GFP_KERNEL); if (!port->rx_buf) return -ENOMEM; }