Data rates of MAX_UINT32 will schedule an unnecessary one jiffy
timeout on the call to msleep. Avoid this scenario by using 0 as the
unlimited data rate.
Signed-off-by: Jorge Ramirez-Ortiz <jorge@xxxxxxxxxxxx>
Reviewed-by: Sumit Garg <sumit.garg@xxxxxxxxxx>
---
drivers/char/hw_random/optee-rng.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/char/hw_random/optee-rng.c b/drivers/char/hw_random/optee-rng.c
index 49b2e02537dd..5bc4700c4dae 100644
--- a/drivers/char/hw_random/optee-rng.c
+++ b/drivers/char/hw_random/optee-rng.c
@@ -128,7 +128,7 @@ static int optee_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)
data += rng_size;
read += rng_size;
- if (wait) {
+ if (wait && pvt_data->data_rate) {
if (timeout-- == 0)
return read;
msleep((1000 * (max - read)) / pvt_data->data_rate);
--
2.17.1
