[PATCH] remoteproc: imx_rproc: Adjust phandle parsing issue while remapping optional addresses in imx_rproc_addr_init()

[Peng Fan]

Hi Aleksandr,

> Subject: [PATCH] remoteproc: imx_rproc: Adjust phandle parsing issue while
> remapping optional addresses in imx_rproc_addr_init()
> 
> In imx_rproc_addr_init() "nph = of_count_phandle_with_args()" just counts
> number of phandles. But phandles may be empty. So of_parse_phandle() in
> the parsing loop (0 < a < nph) may return NULL which is later dereferenced.
> Adjust this issue by adding NULL-return check.

It is good to add a check here. But I am not sure whether this will really
happen.

> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> Fixes: a0ff4aa6f010 ("remoteproc: imx_rproc: add a NXP/Freescale imx_rproc
> driver")
> Signed-off-by: Aleksandr Mishin <amishin at t-argos.ru>

Anyway LGTM:
Reviewed-by: Peng Fan <peng.fan at nxp.com>

Thanks,
Peng.