[PATCH 1/2] clocksource: Convert sprintf/snprintf to sysfs_emit

From: Li Zhijian
Date: Thu Mar 14 2024 - 06:04:34 EST


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: John Stultz <jstultz@xxxxxxxxxx>
CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CC: Stephen Boyd <sboyd@xxxxxxxxxx>
Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxx>
---
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/20240116041129.3937800-1-lizhijian@xxxxxxxxxxx/
---
kernel/time/clocksource.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index e5b260aa0e02..02abca6259b3 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -1336,7 +1336,7 @@ static ssize_t current_clocksource_show(struct device *dev,
ssize_t count = 0;

mutex_lock(&clocksource_mutex);
- count = snprintf(buf, PAGE_SIZE, "%s\n", curr_clocksource->name);
+ count = sysfs_emit(buf, "%s\n", curr_clocksource->name);
mutex_unlock(&clocksource_mutex);

return count;
--
2.29.2