mac80211: rt2x00: improve eeprom_file property handling

Call the rt2x00lib_get_eeprom_file_name only once and from the function
where the EEPROM filename is required.

Error only out if an EEPROM file is mandatory. Use the
REQUIRE_EEPROM_FILE bit to determine if it is mandatory.

Do not set the REQUIRE_EEPROM_FILE bit while requesting an EEPROM file.
It should be (and is) set before requesting an EEPROM file.

Do not redirect users to upstream while using a function of a custom
patch.

Signed-off-by: Mathias Kresin <dev@kresin.me>

package/kernel/mac80211/patches/603-rt2x00-introduce-rt2x00eeprom.patch

@@ -152,7 +152,7 @@
  
 --- /dev/null
 +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c
-@@ -0,0 +1,111 @@
+@@ -0,0 +1,105 @@
 +/*
 +	Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
 +	Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
@@ -203,13 +203,14 @@
 +	int retval;
 +
 +	ee_name = rt2x00lib_get_eeprom_file_name(rt2x00dev);
-+	if (!ee_name) {
-+		rt2x00_err(rt2x00dev,
-+			   "Invalid EEPROM filename.\n"
-+			   "Please file bug report to %s.\n", DRV_PROJECT);
++	if (!ee_name && test_bit(REQUIRE_EEPROM_FILE, &rt2x00dev->cap_flags)) {
++		rt2x00_err(rt2x00dev, "Required EEPROM name is missing.");
 +		return -EINVAL;
 +	}
 +
++	if (!ee_name)
++		return 0;
++
 +	rt2x00_info(rt2x00dev, "Loading EEPROM data from '%s'.\n", ee_name);
 +
 +	retval = request_firmware(&ee, ee_name, rt2x00dev->dev);
@@ -245,16 +246,9 @@
 +{
 +	int retval;
 +
-+	if (!rt2x00lib_get_eeprom_file_name(rt2x00dev))
-+		return 0;
-+
-+	set_bit(REQUIRE_EEPROM_FILE, &rt2x00dev->cap_flags);
-+
-+	if (!rt2x00dev->eeprom_file) {
-+		retval = rt2x00lib_request_eeprom_file(rt2x00dev);
-+		if (retval)
-+			return retval;
-+	}
++	retval = rt2x00lib_request_eeprom_file(rt2x00dev);
++	if (retval)
++		return retval;
 +
 +	return 0;
 +}

package/kernel/mac80211/patches/605-rt2x00-load-eeprom-on-SoC-from-a-mtd-device-defines-.patch

@@ -97,5 +97,5 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +		return 0;
 +
  	ee_name = rt2x00lib_get_eeprom_file_name(rt2x00dev);
- 	if (!ee_name) {
- 		rt2x00_err(rt2x00dev,
+ 	if (!ee_name && test_bit(REQUIRE_EEPROM_FILE, &rt2x00dev->cap_flags)) {
+ 		rt2x00_err(rt2x00dev, "Required EEPROM name is missing.");