The inline isa_register_driver stub simply allows compilation on systems
with CONFIG_ISA disabled; the dummy isa_register_driver does not
register an isa_driver at all. The inline isa_register_driver should
return -ENODEV to indicate lack of support when attempting to register
an isa_driver on such a system with CONFIG_ISA disabled.
Cc: Matthew Wilcox <matt...@wil.cx>
Signed-off-by: William Breathitt Gray <vilhelm.g...@gmail.com>
---
include/linux/isa.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/isa.h b/include/linux/isa.h
index 5ab8528..f1f2adf 100644
--- a/include/linux/isa.h
+++ b/include/linux/isa.h
@@ -6,6 +6,7 @@
#define __LINUX_ISA_H
#include <linux/device.h>
+#include <linux/errno.h>
#include <linux/kernel.h>
struct isa_driver {
@@ -28,7 +29,7 @@ void isa_unregister_driver(struct isa_driver *);
#else
static inline int isa_register_driver(struct isa_driver *d, unsigned int i)
{
- return 0;
+ return -ENODEV;
}
static inline void isa_unregister_driver(struct isa_driver *d)
--
2.7.3
