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iio: inkern: put the IIO device when it fails to allocate memory

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The reference count of the IIO device is increased if the IIO map has
 matched consumer name.
 After then, it tries to allocate the iio_channel which is used by the consumer.
 If it fails to allocate memory, the reference count should be decreased.

 This patch enables restoring the reference count of the IIO device.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Kim, Milo 2012-09-18 05:55:00 +01:00 committed by Jonathan Cameron
parent 369d0e2013
commit 801c4b5ca3
1 changed files with 4 additions and 1 deletions
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5
drivers/iio/inkern.c
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@ -132,7 +132,7 @@ struct iio_channel *iio_channel_get(const char *name, const char *channel_name)
channel = kzalloc(sizeof(*channel), GFP_KERNEL);
if (channel == NULL)
return ERR_PTR(-ENOMEM);
goto error_no_mem;
channel->indio_dev = c->indio_dev;
@ -151,6 +151,9 @@ struct iio_channel *iio_channel_get(const char *name, const char *channel_name)
iio_device_put(c->indio_dev);
kfree(channel);
return ERR_PTR(-EINVAL);
error_no_mem:
iio_device_put(c->indio_dev);
return ERR_PTR(-ENOMEM);
}
EXPORT_SYMBOL_GPL(iio_channel_get);