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authorJeff Garzik <jeff@garzik.org>2007-10-03 15:15:40 -0400
committerJeff Garzik <jeff@garzik.org>2007-10-09 20:22:20 -0400
commit1855256c497ecfefc730df6032243f26855ce52c (patch)
treeb73947f1a5e1b798e1dec068ac1cda25ae910bf6 /include/linux
parentbbf25010f1a6b761914430f5fca081ec8c7accd1 (diff)
drivers/firmware: const-ify DMI API and internals
Three main sets of changes: 1) dmi_get_system_info() return value should have been marked const, since callers should not be changing that data. 2) const-ify DMI internals, since DMI firmware tables should, whenever possible, be marked const to ensure we never ever write to that data area. 3) const-ify DMI API, to enable marking tables const where possible in low-level drivers. And if we're really lucky, this might enable some additional optimizations on the part of the compiler. The bulk of the changes are #2 and #3, which are interrelated. #1 could have been a separate patch, but it was so small compared to the others, it was easier to roll it into this changeset. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/dmi.h22
1 files changed, 11 insertions, 11 deletions
diff --git a/include/linux/dmi.h b/include/linux/dmi.h
index b8ac7b01c45e..00fc7a9c35ec 100644
--- a/include/linux/dmi.h
+++ b/include/linux/dmi.h
@@ -54,7 +54,7 @@ struct dmi_strmatch {
54}; 54};
55 55
56struct dmi_system_id { 56struct dmi_system_id {
57 int (*callback)(struct dmi_system_id *); 57 int (*callback)(const struct dmi_system_id *);
58 const char *ident; 58 const char *ident;
59 struct dmi_strmatch matches[4]; 59 struct dmi_strmatch matches[4];
60 void *driver_data; 60 void *driver_data;
@@ -71,22 +71,22 @@ struct dmi_device {
71 71
72#ifdef CONFIG_DMI 72#ifdef CONFIG_DMI
73 73
74extern int dmi_check_system(struct dmi_system_id *list); 74extern int dmi_check_system(const struct dmi_system_id *list);
75extern char * dmi_get_system_info(int field); 75extern const char * dmi_get_system_info(int field);
76extern struct dmi_device * dmi_find_device(int type, const char *name, 76extern const struct dmi_device * dmi_find_device(int type, const char *name,
77 struct dmi_device *from); 77 const struct dmi_device *from);
78extern void dmi_scan_machine(void); 78extern void dmi_scan_machine(void);
79extern int dmi_get_year(int field); 79extern int dmi_get_year(int field);
80extern int dmi_name_in_vendors(char *str); 80extern int dmi_name_in_vendors(const char *str);
81 81
82#else 82#else
83 83
84static inline int dmi_check_system(struct dmi_system_id *list) { return 0; } 84static inline int dmi_check_system(const struct dmi_system_id *list) { return 0; }
85static inline char * dmi_get_system_info(int field) { return NULL; } 85static inline const char * dmi_get_system_info(int field) { return NULL; }
86static inline struct dmi_device * dmi_find_device(int type, const char *name, 86static inline const struct dmi_device * dmi_find_device(int type, const char *name,
87 struct dmi_device *from) { return NULL; } 87 const struct dmi_device *from) { return NULL; }
88static inline int dmi_get_year(int year) { return 0; } 88static inline int dmi_get_year(int year) { return 0; }
89static inline int dmi_name_in_vendors(char *s) { return 0; } 89static inline int dmi_name_in_vendors(const char *s) { return 0; }
90 90
91#endif 91#endif
92 92