[PATCH v2] kcsan: Use min() to fix Coccinelle warning

From: Thorsten Blum
Date: Mon Jun 24 2024 - 13:59:15 EST


Fixes the following Coccinelle/coccicheck warning reported by
minmax.cocci:

WARNING opportunity for min()

Use const size_t instead of int for the result of min().

Compile-tested with CONFIG_KCSAN=y.

Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Signed-off-by: Thorsten Blum <thorsten.blum@xxxxxxxxxx>
---
Changes in v2:
- Add const and remove redundant parentheses as suggested by Marco Elver
---
kernel/kcsan/debugfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/kcsan/debugfs.c b/kernel/kcsan/debugfs.c
index 1d1d1b0e4248..53b21ae30e00 100644
--- a/kernel/kcsan/debugfs.c
+++ b/kernel/kcsan/debugfs.c
@@ -225,7 +225,7 @@ debugfs_write(struct file *file, const char __user *buf, size_t count, loff_t *o
{
char kbuf[KSYM_NAME_LEN];
char *arg;
- int read_len = count < (sizeof(kbuf) - 1) ? count : (sizeof(kbuf) - 1);
+ const size_t read_len = min(count, sizeof(kbuf) - 1);

if (copy_from_user(kbuf, buf, read_len))
return -EFAULT;
--
2.45.2