ipmi: Add missing annotation for ipmi_ssif_lock_cond() and ipmi_ssif_unlock_cond()

Sparse reports a warning at ipmi_ssif_unlock_cond()
	and ipmi_ssif_lock_cond()

warning: context imbalance in ipmi_ssif_lock_cond()
	- wrong count at exit
 warning: context imbalance in ipmi_ssif_unlock_cond()
	- unexpected unlock

The root cause is the missing annotation at ipmi_ssif_unlock_cond()
	and ipmi_ssif_lock_cond()

Add the missing __acquires(&ata_scsi_rbuf_lock)
Add the missing __releases(&ata_scsi_rbuf_lock)

Signed-off-by: Jules Irenge <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Corey Minyard <[email protected]>

Author: irenge

drivers/char/ipmi/ipmi_ssif.c

@@ -313,13 +313,15 @@ static int start_send(struct ssif_info *ssif_info,
 
 static unsigned long *ipmi_ssif_lock_cond(struct ssif_info *ssif_info,
 					  unsigned long *flags)
+	__acquires(&ssif_info->lock)
 {
 	spin_lock_irqsave(&ssif_info->lock, *flags);
 	return flags;
 }
 
 static void ipmi_ssif_unlock_cond(struct ssif_info *ssif_info,
 				  unsigned long *flags)
+	__releases(&ssif_info->lock)
 {
 	spin_unlock_irqrestore(&ssif_info->lock, *flags);
 }