[PATCH RESEND] iio: inkern: allocate zeroed memory

[Kim, Milo]

 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@xxxxxx>
---
 drivers/iio/inkern.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index b5afc2f..1faa240 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -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);
 
-- 
1.7.9.5


Best Regards,
Milo


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