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authorNeilBrown <neilb@suse.com>2015-09-09 15:38:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-09-10 13:29:01 -0700
commit60b61a6f42f36e4fbfbc0139b7e86ce1494d2d9b (patch)
tree2f9db61076813c5cc36e66b1a046a1c90cd69b42 /kernel/kmod.c
parentb4cc0efea4f0bfa2477c56af406cfcf3d3e58680 (diff)
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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 <neilb@suse.com> Cc: Goldwyn Rodrigues <rgoldwyn@suse.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/kmod.c')
-rw-r--r--kernel/kmod.c9
1 files 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.