[PATCH 4/5] hw_random: don't double-check old_rng.

Rusty Russell
2014-09-18T02:53:16Z

Interesting anti-pattern.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
drivers/char/hw_random/core.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index b4a21e9521cf..6a34feca6b43 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -472,14 +472,13 @@ int hwrng_register(struct hwrng *rng)
}

old_rng = current_rng;
+ err = 0;
if (!old_rng) {
err = hwrng_init(rng);
if (err)
goto out_unlock;
set_current_rng(rng);
- }
- err = 0;
- if (!old_rng) {
+
err = register_miscdev();
if (err) {
drop_current_rng();
--
1.9.1