linux-kernel - [PATCH 2/2] staging: slicoss: replace UPDATE_STATS

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Date:   Wed, 23 Nov 2016 19:10:29 +0100
From:   Sergio Paracuellos <sergio.paracuellos@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        liodot@...il.com, charrer@...critech.com
Subject: [PATCH 2/2] staging: slicoss: replace UPDATE_STATS_GB macro into an inline function

This patch replaces UPDATE_STATS_GB macro in slic.h header file
into an inline function. This provides type safety and readability.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
---
 drivers/staging/slicoss/slic.h    |  6 ++---
 drivers/staging/slicoss/slicoss.c | 56 ++++++++++++++++++++-------------------
 2 files changed, 32 insertions(+), 30 deletions(-)

diff --git a/drivers/staging/slicoss/slic.h b/drivers/staging/slicoss/slic.h
index 2c05868..b19ddc9 100644
--- a/drivers/staging/slicoss/slic.h
+++ b/drivers/staging/slicoss/slic.h
@@ -548,9 +548,9 @@ static inline void slic_flush_write(struct adapter *adapter)
 	ioread32(adapter->regs + SLIC_REG_HOSTID);
 }
 
-#define UPDATE_STATS_GB(largestat, newstat, oldstat)                     \
-{                                                                        \
-	(largestat) += ((newstat) - (oldstat));                          \
+static inline u64 update_stats_gb(const u64 newstat, const u64 oldstat)
+{
+	return (newstat - oldstat);
 }
 
 #if BITS_PER_LONG == 64
diff --git a/drivers/staging/slicoss/slicoss.c b/drivers/staging/slicoss/slicoss.c
index b6ec0a1..6d2f9cc 100644
--- a/drivers/staging/slicoss/slicoss.c
+++ b/drivers/staging/slicoss/slicoss.c
@@ -1014,45 +1014,47 @@ static void slic_upr_request_complete(struct adapter *adapter, u32 isr)
 			break;
 		}
 
-		UPDATE_STATS_GB(stst->tcp.xmit_tcp_segs, stats->xmit_tcp_segs,
-				old->xmit_tcp_segs);
+		stst->tcp.xmit_tcp_segs = update_stats_gb(stats->xmit_tcp_segs,
+							  old->xmit_tcp_segs);
 
-		UPDATE_STATS_GB(stst->tcp.xmit_tcp_bytes, stats->xmit_tcp_bytes,
-				old->xmit_tcp_bytes);
+		stst->tcp.xmit_tcp_bytes =
+			update_stats_gb(stats->xmit_tcp_bytes,
+					old->xmit_tcp_bytes);
 
-		UPDATE_STATS_GB(stst->tcp.rcv_tcp_segs, stats->rcv_tcp_segs,
-				old->rcv_tcp_segs);
+		stst->tcp.rcv_tcp_segs = update_stats_gb(stats->rcv_tcp_segs,
+							 old->rcv_tcp_segs);
 
-		UPDATE_STATS_GB(stst->tcp.rcv_tcp_bytes, stats->rcv_tcp_bytes,
-				old->rcv_tcp_bytes);
+		stst->tcp.rcv_tcp_bytes = update_stats_gb(stats->rcv_tcp_bytes,
+							  old->rcv_tcp_bytes);
 
-		UPDATE_STATS_GB(stst->iface.xmt_bytes, stats->xmit_bytes,
-				old->xmit_bytes);
+		stst->iface.xmt_bytes = update_stats_gb(stats->xmit_bytes,
+							old->xmit_bytes);
 
-		UPDATE_STATS_GB(stst->iface.xmt_ucast, stats->xmit_unicasts,
-				old->xmit_unicasts);
+		stst->iface.xmt_ucast = update_stats_gb(stats->xmit_unicasts,
+							old->xmit_unicasts);
 
-		UPDATE_STATS_GB(stst->iface.rcv_bytes, stats->rcv_bytes,
-				old->rcv_bytes);
+		stst->iface.rcv_bytes = update_stats_gb(stats->rcv_bytes,
+							old->rcv_bytes);
 
-		UPDATE_STATS_GB(stst->iface.rcv_ucast, stats->rcv_unicasts,
-				old->rcv_unicasts);
+		stst->iface.rcv_ucast = update_stats_gb(stats->rcv_unicasts,
+							old->rcv_unicasts);
 
-		UPDATE_STATS_GB(stst->iface.xmt_errors, stats->xmit_collisions,
-				old->xmit_collisions);
+		stst->iface.xmt_errors = update_stats_gb(stats->xmit_collisions,
+							 old->xmit_collisions);
 
-		UPDATE_STATS_GB(stst->iface.xmt_errors,
-				stats->xmit_excess_collisions,
-				old->xmit_excess_collisions);
+		stst->iface.xmt_errors =
+			update_stats_gb(stats->xmit_excess_collisions,
+					old->xmit_excess_collisions);
 
-		UPDATE_STATS_GB(stst->iface.xmt_errors, stats->xmit_other_error,
-				old->xmit_other_error);
+		stst->iface.xmt_errors =
+			update_stats_gb(stats->xmit_other_error,
+					old->xmit_other_error);
 
-		UPDATE_STATS_GB(stst->iface.rcv_errors, stats->rcv_other_error,
-				old->rcv_other_error);
+		stst->iface.rcv_errors = update_stats_gb(stats->rcv_other_error,
+							  old->rcv_other_error);
 
-		UPDATE_STATS_GB(stst->iface.rcv_discards, stats->rcv_drops,
-				old->rcv_drops);
+		stst->iface.rcv_discards = update_stats_gb(stats->rcv_drops,
+							   old->rcv_drops);
 
 		if (stats->rcv_drops > old->rcv_drops)
 			adapter->rcv_drops += (stats->rcv_drops -
-- 
1.9.1