Update hisilicon drivers 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: I67984b6c48c08af61e95a4dbd18047e2c3151f9a
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>
diff --git a/plat/hisilicon/hikey960/drivers/pwrc/hisi_pwrc.c b/plat/hisilicon/hikey960/drivers/pwrc/hisi_pwrc.c
index bcf6865..91d8033 100644
--- a/plat/hisilicon/hikey960/drivers/pwrc/hisi_pwrc.c
+++ b/plat/hisilicon/hikey960/drivers/pwrc/hisi_pwrc.c
@@ -23,7 +23,7 @@
#define RES2_LOCK_BASE (SOC_PCTRL_RESOURCE2_LOCK_ADDR(PCTRL_BASE))
#define LOCK_BIT (0x1 << 28)
-#define LOCK_ID_MASK (0x7 << 29)
+#define LOCK_ID_MASK (0x7u << 29)
#define CPUIDLE_LOCK_ID(core) (0x6 - (core))
#define LOCK_UNLOCK_OFFSET 0x4
#define LOCK_STAT_OFFSET 0x8