Messages in this thread Patch in this message | | | From | "Kim, Milo" <> | Subject | [PATCH RESEND] iio: inkern: allocate zeroed memory | Date | Fri, 14 Sep 2012 01:24:19 +0000 |
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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> --- 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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