staging: ks7010: use CIRC_CNT_TO_END macro in cnt_smeqbody
authorSergio Paracuellos <sergio.paracuellos@gmail.com>
Fri, 4 May 2018 04:16:45 +0000 (06:16 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 7 May 2018 01:58:40 +0000 (18:58 -0700)
This commit changes custom implementation of CIRC_CNT_TO_END.
Just use the linux kernel header one to simplify code.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/ks7010/ks_hostif.c

index 359187e1009b4dfe2762a202f64d5189956ee186..7a511231225feaeb04887324d3e21f86a40ec261 100644 (file)
@@ -6,6 +6,7 @@
  *   Copyright (C) 2009 Renesas Technology Corp.
  */
 
+#include <linux/circ_buf.h>
 #include <linux/if_arp.h>
 #include <net/iw_handler.h>
 #include <uapi/linux/llc.h>
@@ -26,9 +27,8 @@ static inline void inc_smeqtail(struct ks_wlan_private *priv)
 
 static inline unsigned int cnt_smeqbody(struct ks_wlan_private *priv)
 {
-       unsigned int sme_cnt = priv->sme_i.qtail - priv->sme_i.qhead;
-
-       return (sme_cnt + SME_EVENT_BUFF_SIZE) % SME_EVENT_BUFF_SIZE;
+       return CIRC_CNT_TO_END(priv->sme_i.qhead, priv->sme_i.qtail,
+                              SME_EVENT_BUFF_SIZE);
 }
 
 static inline u8 get_byte(struct ks_wlan_private *priv)