From: Kaushlendra Kumar Date: Thu, 28 Aug 2025 06:30:00 +0000 (+0530) Subject: tools/cpupower: fix error return value in cpupower_write_sysfs() X-Git-Tag: v6.17.8~662 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f41eb9b317a382e440aa26ae6e578a0bd2700fb;p=thirdparty%2Fkernel%2Fstable.git tools/cpupower: fix error return value in cpupower_write_sysfs() [ Upstream commit 57b100d4cf14276e0340eecb561005c07c129eb8 ] The cpupower_write_sysfs() function currently returns -1 on write failure, but the function signature indicates it should return an unsigned int. Returning -1 from an unsigned function results in a large positive value rather than indicating an error condition. Fix this by returning 0 on failure, which is more appropriate for an unsigned return type and maintains consistency with typical success/failure semantics where 0 indicates failure and non-zero indicates success (bytes written). Link: https://lore.kernel.org/r/20250828063000.803229-1-kaushlendra.kumar@intel.com Signed-off-by: Kaushlendra Kumar Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin --- diff --git a/tools/power/cpupower/lib/cpupower.c b/tools/power/cpupower/lib/cpupower.c index ce8dfb8e46abd..d7f7ec6f151c2 100644 --- a/tools/power/cpupower/lib/cpupower.c +++ b/tools/power/cpupower/lib/cpupower.c @@ -56,7 +56,7 @@ unsigned int cpupower_write_sysfs(const char *path, char *buf, size_t buflen) if (numwritten < 1) { perror(path); close(fd); - return -1; + return 0; } close(fd);