[PATCH 0/2] ARM: imx: fix device_node refcount leaks in src.c

[Weigang He <geoffreyhe2@gmail.com>]

arch/arm/mach-imx/src.c leaks the device_node references taken by
of_find_compatible_node() in two __init functions: imx_src_init() leaks
the "fsl,imx51-src" node, and imx7_src_init() leaks the "fsl,imx7d-src"
and "fsl,imx7d-gpc" nodes (the first one twice, because np is reused for
the second lookup without a put). of_iomap() does not take ownership of
the node, so these are one-shot device_node refcount leaks per boot.

The two functions were introduced by different commits, so they are
split into one patch each. Each drops the reference right after
of_iomap() consumes the node.

Found by static analysis tool CodeQL. The series is build-tested only
(arm, imx_v6_v7_defconfig); I have no i.MX hardware, so runtime testing
would be appreciated.

Weigang He (2):
  ARM: imx: fix device_node refcount leak in imx_src_init()
  ARM: imx: fix device_node refcount leaks in imx7_src_init()

 arch/arm/mach-imx/src.c | 3 +++
 1 file changed, 3 insertions(+)


base-commit: 0f61b1860cc3f52aef9036d7235ed1f017632193
-- 
2.43.0