Re: [PATCH 4/5] Input: ad7897 - use managed devm_device_add_group
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2017-11-03 00:02:19
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Hi Andi, On Thu, Nov 02, 2017 at 05:01:35PM +0200, Andi Shyti wrote:
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Commit 57b8ff070f98 ("driver core: add devm_device_add_group() and friends") has added the the managed version for creating sysfs group files. Use devm_device_add_group instead of sysfs_create_group and remove the relative sysfs_remove_group and goto label. CC: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Andi Shyti <redacted> --- drivers/input/touchscreen/ad7877.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-)diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c index 3a4230219b23..c8a143db8681 100644 --- a/drivers/input/touchscreen/ad7877.c +++ b/drivers/input/touchscreen/ad7877.c@@ -780,28 +780,17 @@ static int ad7877_probe(struct spi_device *spi) return err; } - err = sysfs_create_group(&spi->dev.kobj, &ad7877_attr_group); + err = devm_device_add_group(&spi->dev, &ad7877_attr_group); if (err) return err; - err = input_register_device(input_dev); - if (err) - goto err_remove_attr_group; - - return 0; - -err_remove_attr_group: - sysfs_remove_group(&spi->dev.kobj, &ad7877_attr_group); - - return err; + return input_register_device(input_dev); } static int ad7877_remove(struct spi_device *spi) { struct ad7877 *ts = spi_get_drvdata(spi); - sysfs_remove_group(&spi->dev.kobj, &ad7877_attr_group); - ad7877_disable(ts);
Can we have ad7877_disable(ts) invoked via devm_add_action_or_reset() and get rid of ad7877_remove() completely. I also do not see a benefit of splitting conversion of each individual resource to a managed variant into a separate patch. Logically it is all one operation, going from unmanaged to managed resources, and it would be easier to review at once. Thanks!
dev_dbg(&spi->dev, "unregistered touchscreen\n"); -- 2.15.0
-- Dmitry