ARM: EXYNOS: Fix dereference of ERR_PTR returned by of_genpd_get_from_provider
authorKrzysztof Kozlowski <k.kozlowski@samsung.com>
Wed, 13 May 2015 08:45:52 +0000 (17:45 +0900)
committerKukjin Kim <kgene@kernel.org>
Wed, 13 May 2015 08:45:52 +0000 (17:45 +0900)
commit0b7dc0ff95237a53287e52f1aab7408ebf1c4085
treeb7a508e517282ed0f1e066eb829c1ed883c9a8d7
parente5cbec617f1791256197ebaca8b04c0eb96fc574
ARM: EXYNOS: Fix dereference of ERR_PTR returned by of_genpd_get_from_provider

ERR_PTR was dereferenced during sub domain parsing, if parent domain
could not be obtained (because of invalid phandle or deferred
registration of parent domain).

The Exynos power domain code checked whether
of_genpd_get_from_provider() returned NULL and in that case it skipped
that power domain node. However this function returns ERR_PTR or valid
pointer, not NULL.

Fixes: 0f7807518fe1 ("ARM: EXYNOS: add support for sub-power domains")
Cc: <stable@vger.kernel.org> [4.0+]
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
arch/arm/mach-exynos/pm_domains.c