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iio: inkern: allocate zeroed memory

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Use kzalloc() rather than kmalloc() for initializing the iio_channel structure.
 This patch enables the iio_dev and iio_chan_spec are set to NULL.
 This may prevent the page fault problem because the pointer of iio_chan_spec
 is initialized as NULL.

 The iio_chan_spec is updated only in case that the IIO map has
 specific channel label.
 When the map has no ADC channel label, then the value of iio_chan_spec
 remains as invalid pointer.
 To prevent this problem, the pointer should be initialized as NULL.

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 2012-09-14 02:24:00 +01:00 committed by Jonathan Cameron
parent 7985e7c100
commit 2cc412b513
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/inkern.c
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@ -130,7 +130,7 @@ struct iio_channel *iio_channel_get(const char *name, const char *channel_name)
if (c == NULL)
return ERR_PTR(-ENODEV);
channel = kmalloc(sizeof(*channel), GFP_KERNEL);
channel = kzalloc(sizeof(*channel), GFP_KERNEL);
if (channel == NULL)
return ERR_PTR(-ENOMEM);