-P requires and uses an argument but its long counterpart --symbol-prefix does not:
depmod: option '--symbol-prefix' doesn't allow an argument
---
tools/depmod.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/tools/depmod.c b/tools/depmod.c
index 682e662..f7d71f8 100644
--- a/tools/depmod.c
+++ b/tools/depmod.c
@@ -63,7 +63,7 @@ static const struct option cmdopts[] = {
{ "verbose", no_argument, 0, 'v' },
{ "show", no_argument, 0, 'n' },
{ "dry-run", no_argument, 0, 'n' },
- { "symbol-prefix", no_argument, 0, 'P' },
+ { "symbol-prefix", required_argument, 0, 'P' },
{ "warn", no_argument, 0, 'w' },
{ "map", no_argument, 0, 'm' }, /* deprecated */
{ "version", no_argument, 0, 'V' },
--
1.7.8.6