From df648c9fbebb4de50e7a6e76cc253c7cb0421f9b Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 8 Jul 2008 19:00:18 +0200 Subject: rework try_then_request_module to do less in non-modular kernels This reworks try_then_request_module to only invoke the "lookup" function "x" once when the kernel is not modular. Signed-off-by: Johannes Berg Signed-off-by: Rusty Russell --- include/linux/kmod.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/kmod.h b/include/linux/kmod.h index 5dc13848891..9bdb28d6660 100644 --- a/include/linux/kmod.h +++ b/include/linux/kmod.h @@ -29,11 +29,12 @@ /* modprobe exit status on success, -ve on error. Return value * usually useless though. */ extern int request_module(const char * name, ...) __attribute__ ((format (printf, 1, 2))); +#define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x))) #else static inline int request_module(const char * name, ...) { return -ENOSYS; } +#define try_then_request_module(x, mod...) (x) #endif -#define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x))) struct key; struct file; -- cgit v1.2.3