On Wed, Sep 23, 2026 at 04:34:05AM +0200, Eduard Zateev wrote:
Building with W=1 reports format truncation warnings when prefixing the Greybus device id to widget and control names.
The destination buffers are NAME_SIZE bytes, while the copied topology names may already take most of that space. Split the operation into writing the prefix first and then copying the remaining name into the space left in the destination buffer.
This avoids the -Wformat-truncation warnings while preserving bounded string handling.
Signed-off-by: Eduard Zateev hackerowskiy@gmail.com
I hate the -Wformat-truncation warning. It doesn't really matter for the kernel. Dmesg output has always been really grotty and especially when you actually need it because of a crash then that's when it's the most jumbled. Truncating the last couple bytes is not going to make a crash noticably more difficult to solve.
The fix is to get rid of -Wformat-truncation for kernel builds.
This patch silences the warning but doesn't fix anything and makes the code less readable.
regards, dan carpenter