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hwrng: core - Convert sprintf/snprintf to sysfs_emit

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Per filesystems/sysfs.rst, show() should only use sysfs_emit()
or sysfs_emit_at() when formatting the value to be returned to user space.

coccinelle complains that there are still a couple of functions that use
snprintf(). Convert them to sysfs_emit().

sprintf() will be converted as weel if they have.

Generally, this patch is generated by
make coccicheck M=<path/to/file> MODE=patch \
COCCI=scripts/coccinelle/api/device_attr_show.cocci

No functional change intended

CC: Olivia Mackall <olivia@selenic.com>
CC: Herbert Xu <herbert@gondor.apana.org.au>
CC: linux-crypto@vger.kernel.org
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Li Zhijian 2024-03-14 16:45:59 +08:00 committed by Herbert Xu
parent 355577ef84
commit 90d012fbbf
1 changed files with 1 additions and 1 deletions
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2
drivers/char/hw_random/core.c
View file

@ -382,7 +382,7 @@ static ssize_t rng_current_show(struct device *dev,
if (IS_ERR(rng))
return PTR_ERR(rng);
ret = snprintf(buf, PAGE_SIZE, "%s\n", rng ? rng->name : "none");
ret = sysfs_emit(buf, "%s\n", rng ? rng->name : "none");
put_rng(rng);
return ret;