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hwrng: core - only set cur_rng_set_by_user if it is working 

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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Dominik Brodowski 2022-01-24 21:29:49 +01:00 committed by Herbert Xu
parent c05ac44944
commit f41aa47c8b
1 changed files with 2 additions and 1 deletions
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3
drivers/char/hw_random/core.c
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@ -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;
}
}