tree 3d63d41c671776a86dd02b4d7eca0011f158a091
parent 7326fffb712f09a315bc73cc1ee63843f59b8bd4
author Srinivas Kandagatla <srinivas.kandagatla@linaro.org> 1450086158 +0000
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1454915353 -0800

nvmem: core: return error for non word aligned access

nvmem providers have restrictions on register strides, so return error
when users attempt to read/write buffers with sizes which are less
than word size.

Without this patch the userspace would continue to try as it does not
get any error from the nvmem core, resulting in a hang or endless loop
in userspace.

Reported-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>