ddebug_proc_write() warns if the written buffer is >4096 bytes.
Might as well tell user how much was attempted, in case its not obvious.
Signed-off-by: Jim Cromie <jim.cro...@gmail.com>
---
lib/dynamic_debug.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 86d4065..0983f60 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -643,7 +643,8 @@ static ssize_t ddebug_proc_write(struct file *file, const
char __user *ubuf,
if (len == 0)
return 0;
if (len > USER_BUF_PAGE - 1) {
- pr_warn("expected <%d bytes into control\n", USER_BUF_PAGE);
+ pr_warn("expected <%d bytes into control, you wrote %d\n",
+ USER_BUF_PAGE, len);
return -E2BIG;
}
tmpbuf = kmalloc(len + 1, GFP_KERNEL);
--
1.7.10.1.487.ga3935e6
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