From: Stefan Wahren wahrenst@gmx.net
[ Upstream commit 643fe70e7bcdcc9e2d96952f7fc2bab56385cce5 ]
of_property_match_string returns an int; either an index from 0 or greater if successful or negative on failure. Even it's very unlikely that the DT CPU node contains multiple enable-methods these checks should be fixed.
This patch was inspired by the work of Nick Desaulniers.
Link: https://lore.kernel.org/lkml/20230516-sunxi-v1-1-ac4b9651a8c1@google.com/T/ Cc: Nick Desaulniers ndesaulniers@google.com Signed-off-by: Stefan Wahren wahrenst@gmx.net Link: https://lore.kernel.org/r/20231228193903.9078-2-wahrenst@gmx.net Reviewed-by: Chen-Yu Tsai wens@csie.org Signed-off-by: Arnd Bergmann arnd@arndb.de Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/mach-sunxi/mc_smp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-sunxi/mc_smp.c b/arch/arm/mach-sunxi/mc_smp.c index cb63921232a6f..a0e38050e7fad 100644 --- a/arch/arm/mach-sunxi/mc_smp.c +++ b/arch/arm/mach-sunxi/mc_smp.c @@ -803,14 +803,14 @@ static int __init sunxi_mc_smp_init(void) for (i = 0; i < ARRAY_SIZE(sunxi_mc_smp_data); i++) { ret = of_property_match_string(node, "enable-method", sunxi_mc_smp_data[i].enable_method); - if (!ret) + if (ret >= 0) break; }
is_a83t = sunxi_mc_smp_data[i].is_a83t;
of_node_put(node); - if (ret) + if (ret < 0) return -ENODEV;
if (!sunxi_mc_smp_cpu_table_init())