linux-kernel - [PATCH 1/2] staging: rtl8192u: Refactoring setKey function

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Message-Id: <20200413030129.861-1-c.cantanheide@gmail.com>
Date:   Mon, 13 Apr 2020 03:01:28 +0000
From:   Camylla Goncalves Cantanheide <c.cantanheide@...il.com>
To:     gregkh@...uxfoundation.org, navid.emamdoost@...il.com,
        sylphrenadin@...il.com, nishkadg.linux@...il.com,
        stephen@...nnan.io, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, lkcamp@...ts.libreplanetbr.org
Subject: [PATCH 1/2] staging: rtl8192u: Refactoring setKey function

Changes of the local variable value and
modification in the seletive repetition structure.

Signed-off-by: Camylla Goncalves Cantanheide <c.cantanheide@...il.com>
---
 drivers/staging/rtl8192u/r8192U_core.c | 52 ++++++++++++--------------
 1 file changed, 24 insertions(+), 28 deletions(-)

diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index 9b8d85a4855d..87c02aee3854 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -4880,7 +4880,7 @@ void EnableHWSecurityConfig8192(struct net_device *dev)
 void setKey(struct net_device *dev, u8 entryno, u8 keyindex, u16 keytype,
 	    u8 *macaddr, u8 defaultkey, u32 *keycontent)
 {
-	u32 target_command = 0;
+	u32 target_command = CAM_CONTENT_COUNT * entryno |  BIT(31) | BIT(16);
 	u32 target_content = 0;
 	u16 us_config = 0;
 	u8 i;
@@ -4890,39 +4890,35 @@ void setKey(struct net_device *dev, u8 entryno, u8 keyindex, u16 keytype,
 
 	RT_TRACE(COMP_SEC,
 		 "====>to %s, dev:%p, EntryNo:%d, KeyIndex:%d, KeyType:%d, MacAddr%pM\n",
-        	 __func__, dev, entryno, keyindex, keytype, macaddr);
+		 __func__, dev, entryno, keyindex, keytype, macaddr);
 
 	if (defaultkey)
 		us_config |= BIT(15) | (keytype << 2);
 	else
 		us_config |= BIT(15) | (keytype << 2) | keyindex;
 
-	for (i = 0; i < CAM_CONTENT_COUNT; i++) {
-		target_command  = i + CAM_CONTENT_COUNT * entryno;
-		target_command |= BIT(31) | BIT(16);
-
-		if (i == 0) { /* MAC|Config */
-			target_content = (u32)(*(macaddr + 0)) << 16 |
-					(u32)(*(macaddr + 1)) << 24 |
-					(u32)us_config;
-
-			write_nic_dword(dev, WCAMI, target_content);
-			write_nic_dword(dev, RWCAM, target_command);
-		} else if (i == 1) { /* MAC */
-			target_content = (u32)(*(macaddr + 2))	 |
-					(u32)(*(macaddr + 3)) <<  8 |
-					(u32)(*(macaddr + 4)) << 16 |
-					(u32)(*(macaddr + 5)) << 24;
-			write_nic_dword(dev, WCAMI, target_content);
-			write_nic_dword(dev, RWCAM, target_command);
-		} else {
-			/* Key Material */
-			if (keycontent) {
-				write_nic_dword(dev, WCAMI,
-						*(keycontent + i - 2));
-				write_nic_dword(dev, RWCAM, target_command);
-                	}
-		}
+	target_content = macaddr[0] << 16 |
+			 macaddr[0] << 24 |
+			(u32)us_config;
+
+	write_nic_dword(dev, WCAMI, target_content);
+	write_nic_dword(dev, RWCAM, target_command++);
+
+	/* MAC */
+	target_content = macaddr[2]	  |
+			 macaddr[3] <<  8 |
+			 macaddr[4] << 16 |
+			 macaddr[5] << 24;
+	write_nic_dword(dev, WCAMI, target_content);
+	write_nic_dword(dev, RWCAM, target_command++);
+
+	/* Key Material */
+	if (!keycontent)
+		return;
+
+	for (i = 2; i < CAM_CONTENT_COUNT; i++) {
+		write_nic_dword(dev, WCAMI, *keycontent++);
+		write_nic_dword(dev, RWCAM, target_command++);
 	}
 }
 
-- 
2.20.1