ipmi: Export ipmb_checksum()

It will be needed by the upcoming ipmb direct addressing.

Signed-off-by: Corey Minyard <minyard@acm.org>
Tested-by: Andrew Manley <andrew.manley@sealingtech.com>
Reviewed-by: Andrew Manley <andrew.manley@sealingtech.com>

diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 13988f88f1b05a14d3f40bf4188a9d771b37130a..ad1a8fc379b9bd4bc47d9cc83627453e9e48f3d7 100644 (file)
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -1710,7 +1710,7 @@ int ipmi_unregister_for_cmd(struct ipmi_user *user,
 }
 EXPORT_SYMBOL(ipmi_unregister_for_cmd);
 
-static unsigned char
+unsigned char
 ipmb_checksum(unsigned char *data, int size)
 {
        unsigned char csum = 0;
@@ -1720,6 +1720,7 @@ ipmb_checksum(unsigned char *data, int size)
 
        return -csum;
 }
+EXPORT_SYMBOL(ipmb_checksum);
 
 static inline void format_ipmb_msg(struct ipmi_smi_msg   *smi_msg,
                                   struct kernel_ipmi_msg *msg,

diff --git a/include/linux/ipmi.h b/include/linux/ipmi.h
index 52850a02a3d0c979108a8c2924d66bcb63261d05..163831a087ef1c8a1c411dc037e10a532217cdb9 100644 (file)
--- a/include/linux/ipmi.h
+++ b/include/linux/ipmi.h
@@ -335,4 +335,7 @@ extern int ipmi_get_smi_info(int if_num, struct ipmi_smi_info *data);
 
 #define GET_DEVICE_ID_MAX_RETRY                5
 
+/* Helper function for computing the IPMB checksum of some data. */
+unsigned char ipmb_checksum(unsigned char *data, int size);
+
 #endif /* __LINUX_IPMI_H */