ata: Add and use ata_print_version_once

Use a single mechanism to show driver version.
Reduces text a tiny bit too.

Remove uses of static int printed_version
Add and use ata_print_version(const struct device *, const char *ver)
and ata_print_version_once.

$ size drivers/ata/built-in.*
   text	   data	    bss	    dec	    hex	filename
 544969	  73893	 116584	 735446	  b38d6	drivers/ata/built-in.allyesconfig.ata.o
 543870	  73893	 116592	 734355	  b34ad	drivers/ata/built-in.allyesconfig.print_once.o
 141328	  14689	   4220	 160237	  271ed	drivers/ata/built-in.defconfig.ata.o
 141212	  14689	   4220	 160121	  27179	drivers/ata/built-in.defconfig.print_once.o

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 4e72a6af70b5..efd6f9800762 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -74,6 +74,16 @@
 
 #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __func__, ## args)
 
+#define ata_print_version_once(dev, version)                    \
+({                                                              \
+        static bool __print_once;                               \
+                                                                \
+        if (!__print_once) {                                    \
+                __print_once = true;                            \
+                ata_print_version(dev, version);                \
+        }                                                       \
+})
+
 /* NEW: debug levels */
 #define HAVE_LIBATA_MSG 1
 
@@ -1287,6 +1297,8 @@ int ata_dev_printk(const struct ata_device *dev, const char *level,
 #define ata_dev_dbg(dev, fmt, ...)                              \
         ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
 
+void ata_print_version(const struct device *dev, const char *version);
+
 /*
  * ata_eh_info helpers
  */