kmod: correct documentation of return status of request_module
PATCH 1/1 kmod: correct documentation of return status of request_module
if request_module() successfully runs modprobe, but modprobe exits with a non-zero status, then the return value from request_module() will be that (positive) error status. So the return from request_module can be:
negative errno
zero for success
positive exit code.
Signed-off-by NeilBrown <[email protected]>
Cc Goldwyn Rodrigues <[email protected]>
kernel/kmod.c +5 -4
@@ -114,10 +114,11 @@ out:* @...: arguments as specified in the format string * * Load a module using the user mode module loader. The function returns -* zero on success or a negative errno code on failure. Note that a -* successful module load does not mean the module did not then unload -* and exit on an error of its own. Callers must check that the service -* they requested is now available not blindly invoke it. +* zero on success or a negative errno code or positive exit code from +* "modprobe" on failure. Note that a successful module load does not mean +* the module did not then unload and exit on an error of its own. Callers +* must check that the service they requested is now available not blindly +* invoke it. * * If module auto-loading support is disabled then this function * becomes a no-operation.