tree ee111e025dff984fb7d70f8debb4a506c8c30f8d
parent d4e7fef1a9a5d2bf3f859ba9f50f4d5409a09ab0
author Alban Bedel <albeu@free.fr> 1548690904 +0000
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1548948254 +0100

nvmem: core: Always reference the device returned by nvmem_device_get()

In nvmem_device_get(), when the device lookup fails with DT it
currently fallback on nvmem_find() which is wrong for two reasons.
First nvmem_find() return NULL when nothing is found instead of an
ERR_PTR. But nvmem_find() also just lookup the device, it doesn't
reference the module and increment the reference count like it is done
in the DT path.

To fix this we replace the call to nvmem_find() with a call to
__nvmem_device_get() which does all the referencing and return a
proper ERR_PTR in case of error.

Signed-off-by: Alban Bedel <albeu@free.fr>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>