tree ea5052ebeb55cc59fc0f3fa28df1560ddfa487f3
parent 08cd9ef4eca0b53cdae190b718e4945408c7d3b8
author Jonathan Cameron <jic23@kernel.org> 1329335280 +0000
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1330114202 -0800

staging:iio:core set the iio_dev.info pointer to null on unregister under lock.

This prevents use of provider callbacks after it has been unregistered.
Note that all code using this that can be called from a consumer *must*
check the pointer before using and hold the info_exist_lock throughout
the usage of the callbacks in info.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>