Update renesas platform to not rely on undefined overflow behaviour
This consists of ensuring that the left operand of each shift is
unsigned when the operation might overflow into the sign bit.
Change-Id: I51278beacbe6da79853c3f0f0f94cd806fc9652c
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
diff --git a/drivers/renesas/rcar/pwrc/pwrc.c b/drivers/renesas/rcar/pwrc/pwrc.c
index d97e593..f4c9d3a 100644
--- a/drivers/renesas/rcar/pwrc/pwrc.c
+++ b/drivers/renesas/rcar/pwrc/pwrc.c
@@ -763,10 +763,10 @@
reg = mmio_read_32(RCAR_PRR);
- if (reg & (1 << (STATE_CA53_CPU + RCAR_CA53CPU_NUM_MAX)))
+ if (reg & (1U << (STATE_CA53_CPU + RCAR_CA53CPU_NUM_MAX)))
return RCAR_CLUSTER_CA57;
- if (reg & (1 << (STATE_CA57_CPU + RCAR_CA57CPU_NUM_MAX)))
+ if (reg & (1U << (STATE_CA57_CPU + RCAR_CA57CPU_NUM_MAX)))
return RCAR_CLUSTER_CA53;
return RCAR_CLUSTER_A53A57;
@@ -810,7 +810,7 @@
count_ca57:
if (IS_A53A57(c) || IS_CA57(c)) {
- if (reg & (1 << (STATE_CA57_CPU + RCAR_CA57CPU_NUM_MAX)))
+ if (reg & (1U << (STATE_CA57_CPU + RCAR_CA57CPU_NUM_MAX)))
goto done;
for (i = 0; i < RCAR_CA57CPU_NUM_MAX; i++) {