Change the 'ret' variable from u32 to int to store negative error codes directly or returned by other functions. Storing the negative error codes in unsigned type, doesn't cause an issue at runtime but it's ugly as pants. Additionally, assigning negative error codes to unsigned type may trigger a GCC warning when the -Wsign-conversion flag is enabled. No effect on runtime. Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Message-ID: <20250828075406.386208-2-rongqianfeng@vivo.com> Signed-off-by: Mark Brown <broonie@kernel.org>