kernel/linux.git/drivers/iio/multiplexer, branch v4.14.263Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v4.14.2632017-12-10T12:40:43+00:00iio: multiplexer: add NULL check on devm_kzalloc() and devm_kmemdup() return values2017-12-10T12:40:43+00:00Gustavo A. R. Silvagarsilva@embeddedor.com2017-07-07T04:53:11+00:00urn:sha1:53ce4d4aad93e2b48999ab9a225a84bfa54760fe
[ Upstream commit dd92d5ea20ef8a42be7aeda08c669c586c730451 ]
Check return values from call to devm_kzalloc() and devm_kmemup()
in order to prevent a NULL pointer dereference.
This issue was detected using Coccinelle and the following semantic patch:
@@
expression x;
identifier fld;
@@
* x = devm_kzalloc(...);
... when != x == NULL
x->fld
Fixes: 7ba9df54b091 ("iio: multiplexer: new iio category and iio-mux driver")
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
iio: multiplexer: new iio category and iio-mux driver2017-06-03T10:29:26+00:00Peter Rosinpeda@axentia.se2017-05-14T19:51:10+00:00urn:sha1:7ba9df54b09117c0a062f9eac4a36b0e70893387
When a multiplexer changes how an iio device behaves (for example
by feeding different signals to an ADC), this driver can be used
to create one virtual iio channel for each multiplexer state.
Depends on the generic multiplexer subsystem.
Cache any ext_info values from the parent iio channel, creating a private
copy of the ext_info attributes for each multiplexer state/channel.
Reviewed-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>