From 2c6a958789f79dedef3d661569f7faa7b375b538 Mon Sep 17 00:00:00 2001 From: Yicong Yang Date: Thu, 8 Apr 2021 19:38:11 +0800 Subject: [PATCH] iio: buffer-dmaengine: simplify __devm_iio_dmaengine_buffer_free() Use devm_add_action_or_reset() instead of devres_alloc() and devres_add(), which works the same. This will simplify the code. There is no functional changes. Signed-off-by: Yicong Yang Reviewed-by: Lars-Peter Clausen Reviewed-by: Nuno Sa Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/1617881896-3164-3-git-send-email-yangyicong@hisilicon.com Signed-off-by: Jonathan Cameron --- .../buffer/industrialio-buffer-dmaengine.c | 22 ++++++++----------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/drivers/iio/buffer/industrialio-buffer-dmaengine.c b/drivers/iio/buffer/industrialio-buffer-dmaengine.c index d76179878ff9..1ac94c4e9792 100644 --- a/drivers/iio/buffer/industrialio-buffer-dmaengine.c +++ b/drivers/iio/buffer/industrialio-buffer-dmaengine.c @@ -228,9 +228,9 @@ static void iio_dmaengine_buffer_free(struct iio_buffer *buffer) iio_buffer_put(buffer); } -static void __devm_iio_dmaengine_buffer_free(struct device *dev, void *res) +static void __devm_iio_dmaengine_buffer_free(void *buffer) { - iio_dmaengine_buffer_free(*(struct iio_buffer **)res); + iio_dmaengine_buffer_free(buffer); } /** @@ -247,21 +247,17 @@ static void __devm_iio_dmaengine_buffer_free(struct device *dev, void *res) static struct iio_buffer *devm_iio_dmaengine_buffer_alloc(struct device *dev, const char *channel) { - struct iio_buffer **bufferp, *buffer; - - bufferp = devres_alloc(__devm_iio_dmaengine_buffer_free, - sizeof(*bufferp), GFP_KERNEL); - if (!bufferp) - return ERR_PTR(-ENOMEM); + struct iio_buffer *buffer; + int ret; buffer = iio_dmaengine_buffer_alloc(dev, channel); - if (IS_ERR(buffer)) { - devres_free(bufferp); + if (IS_ERR(buffer)) return buffer; - } - *bufferp = buffer; - devres_add(dev, bufferp); + ret = devm_add_action_or_reset(dev, __devm_iio_dmaengine_buffer_free, + buffer); + if (ret) + return ERR_PTR(ret); return buffer; }