diff mbox series

[4/6] hw_random: only set cur_rng_set_by_user if it is working

Message ID 20220124202951.28579-4-linux@dominikbrodowski.net
State Accepted
Commit f41aa47c8bb40bcbad51fc368fe15f96406897cb
Headers show
Series [1/6] hw_random: explicit ordering of initcalls | expand

Commit Message

Dominik Brodowski Jan. 24, 2022, 8:29 p.m. UTC 
In case the user-specified rng device is not working, it is not used;
therefore cur_rng_set_by_user must not be set to 1.

Cc: Matt Mackall <mpm@selenic.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
---
 drivers/char/hw_random/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 89891ac87af0..9405fcdace38 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -335,8 +335,9 @@  static ssize_t rng_current_store(struct device *dev,
 	} else {
 		list_for_each_entry(rng, &rng_list, list) {
 			if (sysfs_streq(rng->name, buf)) {
-				cur_rng_set_by_user = 1;
 				err = set_current_rng(rng);
+				if (!err)
+					cur_rng_set_by_user = 1;
 				break;
 			}
 		}