Current implementation works fine if "usec * get_tbclk()" fits in 32
bits. Otherwise result will be cut down to 32-bit.
Fix is obvious - first extend data type of either operand.
Signed-off-by: Alexey Brodkin <abrod...@synopsys.com>
Cc: Rob Herring <rob.herr...@calxeda.com>
Cc: Mischa Jonker <mjon...@synopsys.com>
---
lib/time.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/time.c b/lib/time.c
index 09bb05a..80003c3 100644
--- a/lib/time.c
+++ b/lib/time.c
@@ -71,7 +71,7 @@ unsigned long __weak notrace timer_get_us(void)
}
static unsigned long long usec_to_tick(unsigned long usec)
{
- uint64_t tick = usec * get_tbclk();
+ uint64_t tick = (uint64_t)usec * get_tbclk();
usec *= get_tbclk();
do_div(tick, 1000000);
return tick;
--
1.8.4.2
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