linux-kernel - [PATCH] staging: rtl8723bs: Use vsnprintf extensions %pM and %pI4

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Date:   Mon, 12 Jun 2017 20:20:46 -0700
From:   Joe Perches <joe@...ches.com>
To:     linux-kernel@...r.kernel.org
Cc:     Hans de Goede <hdegoede@...hat.com>,
        Larry Finger <Larry.Finger@...inger.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org
Subject: [PATCH] staging: rtl8723bs: Use vsnprintf extensions %pM and %pI4

Convert the uses of MAC_FMT, MAC_ARG and IP_FMT, IP_ARG to the
kernel extensions.

This could eventually be improved with an in-place substitution.

This reduces object code size a bit too.

$ size drivers/staging/rtl8723bs/r8723bs.o*
   text	   data	    bss	    dec	    hex	filename
 672812	  27040	  24232	 724084	  b0c74	drivers/staging/rtl8723bs/r8723bs.o.allyesconfig.new
 676299	  27040	  24232	 727571	  b1a13	drivers/staging/rtl8723bs/r8723bs.o.allyesconfig.old
 430398	  27040	  21528	 478966	  74ef6	drivers/staging/rtl8723bs/r8723bs.o.defconfig.new
 431581	  27040	  21528	 480149	  75395	drivers/staging/rtl8723bs/r8723bs.o.defconfig.old

Signed-off-by: Joe Perches <joe@...ches.com>
---
 drivers/staging/rtl8723bs/include/ieee80211.h     | 8 ++++----
 drivers/staging/rtl8723bs/include/osdep_service.h | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/rtl8723bs/include/ieee80211.h b/drivers/staging/rtl8723bs/include/ieee80211.h
index 6dc6dc73d72f..73ce63770c3c 100644
--- a/drivers/staging/rtl8723bs/include/ieee80211.h
+++ b/drivers/staging/rtl8723bs/include/ieee80211.h
@@ -1003,10 +1003,10 @@ enum ieee80211_state {
 
 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
 #define DEFAULT_FTS 2346
-#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
-#define MAC_ARG(x) ((u8 *)(x))[0], ((u8 *)(x))[1], ((u8 *)(x))[2], ((u8 *)(x))[3], ((u8 *)(x))[4], ((u8 *)(x))[5]
-#define IP_FMT "%d.%d.%d.%d"
-#define IP_ARG(x) ((u8 *)(x))[0], ((u8 *)(x))[1], ((u8 *)(x))[2], ((u8 *)(x))[3]
+#define MAC_FMT "%pM"
+#define MAC_ARG(x) (x)
+#define IP_FMT "%pI4"
+#define IP_ARG(x) (x)
 
 extern __inline int is_multicast_mac_addr(const u8 *addr)
 {
diff --git a/drivers/staging/rtl8723bs/include/osdep_service.h b/drivers/staging/rtl8723bs/include/osdep_service.h
index fdeabc1daeca..ac9ffe0e3b84 100644
--- a/drivers/staging/rtl8723bs/include/osdep_service.h
+++ b/drivers/staging/rtl8723bs/include/osdep_service.h
@@ -169,10 +169,10 @@ __inline static u32 _RND8(u32 sz)
 }
 
 #ifndef MAC_FMT
-#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
+#define MAC_FMT "%pM"
 #endif
 #ifndef MAC_ARG
-#define MAC_ARG(x) ((u8 *)(x))[0], ((u8 *)(x))[1], ((u8 *)(x))[2], ((u8 *)(x))[3], ((u8 *)(x))[4], ((u8 *)(x))[5]
+#define MAC_ARG(x) (x)
 #endif
 
 
-- 
2.10.0.rc2.1.g053435c