From 15eed6b853b7e06f08632ef3cbe6cc42ac3eb858 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Thu, 27 Dec 2018 15:05:26 +0100
Subject: [PATCH 01/16] rt2x00: define RF5592 in init_eeprom routine
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To: linux-wireless@vger.kernel.org,
    Stanislaw Gruszka <stf_xl@wp.pl>,
    Helmut Schaa <helmut.schaa@googlemail.com>
Cc: Kalle Valo <kvalo@kernel.org>,
    David S. Miller <davem@davemloft.net>,
    Eric Dumazet <edumazet@google.com>,
    Jakub Kicinski <kuba@kernel.org>,
    Paolo Abeni <pabeni@redhat.com>,
    Johannes Berg <johannes.berg@intel.com>

From: Tomislav Požega <pozega.tomislav@gmail.com>

This patch fixes following crash on Linksys EA2750 during 5GHz wifi
init:

[    7.955153] rt2800pci 0000:01:00.0: card - bus=0x1, slot = 0x0 irq=4
[    7.962259] rt2800pci 0000:01:00.0: loaded eeprom from mtd device "Factory"
[    7.969435] ieee80211 phy0: rt2x00_set_rt: Info - RT chipset 5592, rev 0222 detected
[    7.977348] ieee80211 phy0: rt2800_init_eeprom: Error - Invalid RF chipset 0x0000 detected
[    7.985793] ieee80211 phy0: rt2x00lib_probe_dev: Error - Failed to allocate device
[    7.993569] CPU 0 Unable to handle kernel paging request at virtual address 00000024, epc == 800c8f54, ra == 80249ff8
[    8.004408] Oops[#1]:

Signed-off-by: Tomislav Požega <pozega.tomislav@gmail.com>
---
 drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -9435,6 +9435,8 @@ static int rt2800_init_eeprom(struct rt2
 		rf = RF3853;
 	else if (rt2x00_rt(rt2x00dev, RT5350))
 		rf = RF5350;
+	else if (rt2x00_rt(rt2x00dev, RT5592))
+		rf = RF5592;
 	else
 		rf = rt2x00_get_field16(eeprom, EEPROM_NIC_CONF0_RF_TYPE);