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| author |   Jiri Slaby <jirislaby@gmail.com> | 2008-12-10 14:07:21 +0100 |
|---|---|---|
| committer |   Jeff Garzik <jgarzik@redhat.com> | 2008-12-29 07:39:34 -0500 |
| commit | d61c72e52b98411d1cfef1fdb3f5a8bb070f8966 (patch) | |
| tree | a32263f85d0b518cac00cf0758e738eee52a7f73 | |
| parent | libata: blacklist NCQ on OCZ CORE 2 SSD (resend) (diff) | |
| download | linux-dev-d61c72e52b98411d1cfef1fdb3f5a8bb070f8966.tar.xz linux-dev-d61c72e52b98411d1cfef1fdb3f5a8bb070f8966.zip | |
DMI: add dmi_match
Add a wrapper for testing system_info which will handle also NULL
system infos.
This will be used by the ata PIIX driver.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alexandru Romanescu <a_romanescu@yahoo.co.uk>
Cc: Tejun Heo <tj@kernel.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| -rw-r--r-- | drivers/firmware/dmi_scan.c | 16 | ||||
| -rw-r--r-- | include/linux/dmi.h | 3 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index 4a597d8c2f70..78b989d202a3 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -582,3 +582,19 @@ int dmi_walk(void (*decode)(const struct dmi_header *)) return 0; } EXPORT_SYMBOL_GPL(dmi_walk); + +/** + * dmi_match - compare a string to the dmi field (if exists) + * + * Returns true if the requested field equals to the str (including NULL). + */ +bool dmi_match(enum dmi_field f, const char *str) +{ + const char *info = dmi_get_system_info(f); + + if (info == NULL || str == NULL) + return info == str; + + return !strcmp(info, str); +} +EXPORT_SYMBOL_GPL(dmi_match); diff --git a/include/linux/dmi.h b/include/linux/dmi.h index 2bfda178f274..34161907b2f8 100644 --- a/include/linux/dmi.h +++ b/include/linux/dmi.h @@ -47,6 +47,7 @@ extern int dmi_name_in_vendors(const char *str); extern int dmi_name_in_serial(const char *str); extern int dmi_available; extern int dmi_walk(void (*decode)(const struct dmi_header *)); +extern bool dmi_match(enum dmi_field f, const char *str); #else @@ -61,6 +62,8 @@ static inline int dmi_name_in_serial(const char *s) { return 0; } #define dmi_available 0 static inline int dmi_walk(void (*decode)(const struct dmi_header *)) { return -1; } +static inline bool dmi_match(enum dmi_field f, const char *str) + { return false; } #endif |