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authorJiri Slaby <jirislaby@gmail.com>2008-12-10 14:07:21 +0100
committerJeff Garzik <jgarzik@redhat.com>2008-12-29 07:39:34 -0500
commitd61c72e52b98411d1cfef1fdb3f5a8bb070f8966 (patch)
treea32263f85d0b518cac00cf0758e738eee52a7f73 /drivers/firmware/dmi_scan.c
parent5ccfca974f3ce3c33be72f1fcb2b42747714ec79 (diff)
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>
Diffstat (limited to 'drivers/firmware/dmi_scan.c')
-rw-r--r--drivers/firmware/dmi_scan.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 4a597d8c2f7..78b989d202a 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);