From: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Date: Thu, 17 May 2012 19:56:35 +0000 (-0400)
Subject: net/wireless: ipw2200: introduce ipw_read_eeprom function
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fdbfff73408f99799724f583cbc2a0ce3263c6a7;p=linux-beck.git

net/wireless: ipw2200: introduce ipw_read_eeprom function

We separate reading of device's eeprom content from writing it back
to the device's sram.

Signed-off-by: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/ipw2x00/ipw2200.c b/drivers/net/wireless/ipw2x00/ipw2200.c
index 0036737fe8e3..254b89223276 100644
--- a/drivers/net/wireless/ipw2x00/ipw2200.c
+++ b/drivers/net/wireless/ipw2x00/ipw2200.c
@@ -2701,6 +2701,20 @@ static void eeprom_parse_mac(struct ipw_priv *priv, u8 * mac)
 	memcpy(mac, &priv->eeprom[EEPROM_MAC_ADDRESS], 6);
 }
 
+static void ipw_read_eeprom(struct ipw_priv *priv)
+{
+	int i;
+	__le16 *eeprom = (__le16 *) priv->eeprom;
+
+	IPW_DEBUG_TRACE(">>\n");
+
+	/* read entire contents of eeprom into private buffer */
+	for (i = 0; i < 128; i++)
+		eeprom[i] = cpu_to_le16(eeprom_read_u16(priv, (u8) i));
+
+	IPW_DEBUG_TRACE("<<\n");
+}
+
 /*
  * Either the device driver (i.e. the host) or the firmware can
  * load eeprom data into the designated region in SRAM.  If neither
@@ -2712,14 +2726,9 @@ static void eeprom_parse_mac(struct ipw_priv *priv, u8 * mac)
 static void ipw_eeprom_init_sram(struct ipw_priv *priv)
 {
 	int i;
-	__le16 *eeprom = (__le16 *) priv->eeprom;
 
 	IPW_DEBUG_TRACE(">>\n");
 
-	/* read entire contents of eeprom into private buffer */
-	for (i = 0; i < 128; i++)
-		eeprom[i] = cpu_to_le16(eeprom_read_u16(priv, (u8) i));
-
 	/*
 	   If the data looks correct, then copy it to our private
 	   copy.  Otherwise let the firmware know to perform the operation
@@ -3643,8 +3652,10 @@ static int ipw_load(struct ipw_priv *priv)
 	/* ack fw init done interrupt */
 	ipw_write32(priv, IPW_INTA_RW, IPW_INTA_BIT_FW_INITIALIZATION_DONE);
 
-	/* read eeprom data and initialize the eeprom region of sram */
+	/* read eeprom data */
 	priv->eeprom_delay = 1;
+	ipw_read_eeprom(priv);
+	/* initialize the eeprom region of sram */
 	ipw_eeprom_init_sram(priv);
 
 	/* enable interrupts */