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 <[email protected]>
CC: Herbert Xu <[email protected]>
CC: [email protected]
Signed-off-by: Li Zhijian <[email protected]>
---
This is a part of the work "Fix coccicheck device_attr_show warnings"[1]
Split them per subsystem so that the maintainer can review it easily
[1] https://lore.kernel.org/lkml/[email protected]/
---
drivers/char/hw_random/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index a3bbdd6e60fc..f5c71a617a99 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -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;
--
2.29.2
On Thu, Mar 14, 2024 at 04:45:59PM +0800, Li Zhijian wrote:
> 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 <[email protected]>
> CC: Herbert Xu <[email protected]>
> CC: [email protected]
> Signed-off-by: Li Zhijian <[email protected]>
> ---
> This is a part of the work "Fix coccicheck device_attr_show warnings"[1]
> Split them per subsystem so that the maintainer can review it easily
> [1] https://lore.kernel.org/lkml/[email protected]/
> ---
> drivers/char/hw_random/core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Patch applied. Thanks.
--
Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt