From 60b61a6f42f36e4fbfbc0139b7e86ce1494d2d9b Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 9 Sep 2015 15:38:10 -0700 Subject: [PATCH] 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 Cc: Goldwyn Rodrigues Cc: Oleg Nesterov Cc: Tejun Heo Cc: Rusty Russell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/kmod.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/kernel/kmod.c b/kernel/kmod.c index 2777f40a9c7b..1734ba61ff23 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -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. -- 2.20.1