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([5.2.193.191]) by smtp.gmail.com with ESMTPSA id n2sm23134329wmb.32.2021.05.10.05.55.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 May 2021 05:55:53 -0700 (PDT) From: Alexandru Ardelean To: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: jic23@kernel.org, Jonathan.Cameron@huawei.com, alexandru.tachici@analog.com, linux@deviqon.com, Alexandru Ardelean Subject: [PATCH 03/11] iio: adc: ad7791: convert to device-managed functions Date: Mon, 10 May 2021 15:55:15 +0300 Message-Id: <20210510125523.1271237-4-aardelean@deviqon.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210510125523.1271237-1-aardelean@deviqon.com> References: <20210510125523.1271237-1-aardelean@deviqon.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org With the devm_ad_sd_setup_buffer_and_trigger() helper, it's a bit easier now to convert the probe of the AD7791 driver to use device-managed functions. Only the regulator disable requires a devm_add_action_or_reset() callback. This change does that, cleaning up the driver a bit. Signed-off-by: Alexandru Ardelean --- drivers/iio/adc/ad7791.c | 44 ++++++++++++---------------------------- 1 file changed, 13 insertions(+), 31 deletions(-) diff --git a/drivers/iio/adc/ad7791.c b/drivers/iio/adc/ad7791.c index d57ad966e17c..cb579aa89f39 100644 --- a/drivers/iio/adc/ad7791.c +++ b/drivers/iio/adc/ad7791.c @@ -394,6 +394,11 @@ static int ad7791_setup(struct ad7791_state *st, st->mode); } +static void ad7791_reg_disable(void *reg) +{ + regulator_disable(reg); +} + static int ad7791_probe(struct spi_device *spi) { struct ad7791_platform_data *pdata = spi->dev.platform_data; @@ -420,11 +425,13 @@ static int ad7791_probe(struct spi_device *spi) if (ret) return ret; + ret = devm_add_action_or_reset(&spi->dev, ad7791_reg_disable, st->reg); + if (ret) + return ret; + st->info = &ad7791_chip_infos[spi_get_device_id(spi)->driver_data]; ad_sd_init(&st->sd, indio_dev, spi, &ad7791_sigma_delta_info); - spi_set_drvdata(spi, indio_dev); - indio_dev->name = spi_get_device_id(spi)->name; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->channels = st->info->channels; @@ -434,39 +441,15 @@ static int ad7791_probe(struct spi_device *spi) else indio_dev->info = &ad7791_no_filter_info; - ret = ad_sd_setup_buffer_and_trigger(indio_dev); + ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev); if (ret) - goto error_disable_reg; + return ret; ret = ad7791_setup(st, pdata); if (ret) - goto error_remove_trigger; - - ret = iio_device_register(indio_dev); - if (ret) - goto error_remove_trigger; - - return 0; - -error_remove_trigger: - ad_sd_cleanup_buffer_and_trigger(indio_dev); -error_disable_reg: - regulator_disable(st->reg); - - return ret; -} - -static int ad7791_remove(struct spi_device *spi) -{ - struct iio_dev *indio_dev = spi_get_drvdata(spi); - struct ad7791_state *st = iio_priv(indio_dev); - - iio_device_unregister(indio_dev); - ad_sd_cleanup_buffer_and_trigger(indio_dev); - - regulator_disable(st->reg); + return ret; - return 0; + return devm_iio_device_register(&spi->dev, indio_dev); } static const struct spi_device_id ad7791_spi_ids[] = { @@ -484,7 +467,6 @@ static struct spi_driver ad7791_driver = { .name = "ad7791", }, .probe = ad7791_probe, - .remove = ad7791_remove, .id_table = ad7791_spi_ids, }; module_spi_driver(ad7791_driver);