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[2a02:8389:41cf:e200:6d88:4cd9:a9d4:f267]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a93c27c70d3sm13947966b.78.2024.09.26.09.08.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Sep 2024 09:08:48 -0700 (PDT) From: Javier Carrasco Date: Thu, 26 Sep 2024 18:08:40 +0200 Subject: [PATCH 4/4] iio: adc: ad5755: use scoped device_for_each_child_node() Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240926-iio_device_for_each_child_node_scoped-v1-4-64ca8a424578@gmail.com> References: <20240926-iio_device_for_each_child_node_scoped-v1-0-64ca8a424578@gmail.com> In-Reply-To: <20240926-iio_device_for_each_child_node_scoped-v1-0-64ca8a424578@gmail.com> To: Jonathan Cameron , Lars-Peter Clausen , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Michael Hennerich Cc: linux-arm-msm@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, Javier Carrasco X-Mailer: b4 0.14-dev X-Developer-Signature: v=1; a=ed25519-sha256; t=1727366918; l=1682; i=javier.carrasco.cruz@gmail.com; s=20240312; h=from:subject:message-id; bh=xTmIMKWrAEJ2sxUaBzK8+gdHqeGN97Vi3rD2yxlm2m8=; b=PgLKXJGq2MweGHIGTLRvljlOM7oxtbS7Y8PJM25aEBf0vmjeCKYh8ES4/Km4e2w0Irtx2nvj1 ddQdkAH4KPBDo3JfVnrEyLrV2hVMi0/5mNJUuT+Hf4ES1FMXY9K209/ X-Developer-Key: i=javier.carrasco.cruz@gmail.com; a=ed25519; pk=lzSIvIzMz0JhJrzLXI0HAdPwsNPSSmEn6RbS+PTS9aQ= Switch to device_for_each_child_node_scoped() to simplify the code by removing the need for calls to fwnode_handle_put() in the error path, in this particular case dropping the jump to error_out as well. This prevents possible memory leaks if new error paths are added without the required call to fwnode_handle_put(). Signed-off-by: Javier Carrasco --- drivers/iio/dac/ad5755.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c index 0b24cb19ac9d..05e80b6ae2cc 100644 --- a/drivers/iio/dac/ad5755.c +++ b/drivers/iio/dac/ad5755.c @@ -699,7 +699,6 @@ static const struct ad5755_platform_data ad5755_default_pdata = { static struct ad5755_platform_data *ad5755_parse_fw(struct device *dev) { - struct fwnode_handle *pp; struct ad5755_platform_data *pdata; unsigned int tmp; unsigned int tmparray[3]; @@ -746,11 +745,12 @@ static struct ad5755_platform_data *ad5755_parse_fw(struct device *dev) } devnr = 0; - device_for_each_child_node(dev, pp) { + device_for_each_child_node_scoped(dev, pp) { if (devnr >= AD5755_NUM_CHANNELS) { dev_err(dev, "There are too many channels defined in DT\n"); - goto error_out; + devm_kfree(dev, pdata); + return NULL; } pdata->dac[devnr].mode = AD5755_MODE_CURRENT_4mA_20mA; @@ -800,11 +800,6 @@ static struct ad5755_platform_data *ad5755_parse_fw(struct device *dev) } return pdata; - - error_out: - fwnode_handle_put(pp); - devm_kfree(dev, pdata); - return NULL; } static int ad5755_probe(struct spi_device *spi)