arm: rmobile: Fix off-by-one error in cpuinfo
In rmobile_cpuinfo_idx() there is an off-by-one error in accessing the
rmobile_cpuinfo array.
At the end of the loop, i is equal to the array size, i.e.
rmobile_cpuinfo[i] accesses one entry past the end of the array. The
last entry in the array is a fallback value so the loop should count to
ARRAY_SIZE(rmobile_cpuinfo) - 1 instead, this will leave i equal to the
index of the fallback value if no match is found.
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/arch/arm/mach-rmobile/cpu_info.c b/arch/arm/mach-rmobile/cpu_info.c
index 1d33e2a..7651e43 100644
--- a/arch/arm/mach-rmobile/cpu_info.c
+++ b/arch/arm/mach-rmobile/cpu_info.c
@@ -86,7 +86,7 @@
int i = 0;
u32 cpu_type = rmobile_get_cpu_type();
- for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++)
+ for (; i < ARRAY_SIZE(rmobile_cpuinfo) - 1; i++)
if (rmobile_cpuinfo[i].cpu_type == cpu_type)
break;