From 6aaacd861517f89797f2f4a54624a599847262f3 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 13 Jan 2013 19:54:58 +0100
Subject: ath9k_hw: fix RF bank initialization
ar900*_init_mode_regs needs to be called before RF banks are allocated,
otherwise the storage size of RF banks isn't known. This patch fixes
a memory overrun that can show up as a crash on unloading the module.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/ath/ath9k/ar9002_hw.c | 12 ++++++++----
drivers/net/wireless/ath/ath9k/ar9003_hw.c | 2 +-
drivers/net/wireless/ath/ath9k/hw.c | 7 -------
drivers/net/wireless/ath/ath9k/hw.h | 2 --
4 files changed, 9 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9002_hw.c b/drivers/net/wireless/ath/ath9k/ar9002_hw.c
index 54da026f058c..f053d978540e 100644
--- a/drivers/net/wireless/ath/ath9k/ar9002_hw.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_hw.c
@@ -23,13 +23,13 @@
/* General hardware code for the A5008/AR9001/AR9002 hadware families */
-static void ar9002_hw_init_mode_regs(struct ath_hw *ah)
+static int ar9002_hw_init_mode_regs(struct ath_hw *ah)
{
if (AR_SREV_9271(ah)) {
INIT_INI_ARRAY(&ah->iniModes, ar9271Modes_9271);
INIT_INI_ARRAY(&ah->iniCommon, ar9271Common_9271);
INIT_INI_ARRAY(&ah->iniModes_9271_ANI_reg, ar9271Modes_9271_ANI_reg);
- return;
+ return 0;
}
if (ah->config.pcie_clock_req)
@@ -104,7 +104,7 @@ static void ar9002_hw_init_mode_regs(struct ath_hw *ah)
data = devm_kzalloc(ah->dev, size, GFP_KERNEL);
if (!data)
- return;
+ return -ENOMEM;
memcpy(data, addac->ia_array, size);
addac->ia_array = data;
@@ -120,6 +120,7 @@ static void ar9002_hw_init_mode_regs(struct ath_hw *ah)
INIT_INI_ARRAY(&ah->iniCckfirJapan2484,
ar9287Common_japan_2484_cck_fir_coeff_9287_1_1);
}
+ return 0;
}
static void ar9280_20_hw_init_rxgain_ini(struct ath_hw *ah)
@@ -415,7 +416,10 @@ int ar9002_hw_attach_ops(struct ath_hw *ah)
struct ath_hw_ops *ops = ath9k_hw_ops(ah);
int ret;
- priv_ops->init_mode_regs = ar9002_hw_init_mode_regs;
+ ret = ar9002_hw_init_mode_regs(ah);
+ if (ret)
+ return ret;
+
priv_ops->init_mode_gain_regs = ar9002_hw_init_mode_gain_regs;
ops->config_pci_powersave = ar9002_hw_configpcipowersave;
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_hw.c b/drivers/net/wireless/ath/ath9k/ar9003_hw.c
index de8a56c92e1a..6fcd6e989c55 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_hw.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_hw.c
@@ -704,7 +704,7 @@ void ar9003_hw_attach_ops(struct ath_hw *ah)
struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
struct ath_hw_ops *ops = ath9k_hw_ops(ah);
- priv_ops->init_mode_regs = ar9003_hw_init_mode_regs;
+ ar9003_hw_init_mode_regs(ah);
priv_ops->init_mode_gain_regs = ar9003_hw_init_mode_gain_regs;
ops->config_pci_powersave = ar9003_hw_configpcipowersave;
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index caf0626eeaa5..a7448d1f5460 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -54,11 +54,6 @@ static void ath9k_hw_init_cal_settings(struct ath_hw *ah)
ath9k_hw_private_ops(ah)->init_cal_settings(ah);
}
-static void ath9k_hw_init_mode_regs(struct ath_hw *ah)
-{
- ath9k_hw_private_ops(ah)->init_mode_regs(ah);
-}
-
static u32 ath9k_hw_compute_pll_control(struct ath_hw *ah,
struct ath9k_channel *chan)
{
@@ -670,8 +665,6 @@ static int __ath9k_hw_init(struct ath_hw *ah)
if (!AR_SREV_9300_20_OR_LATER(ah))
ah->ani_function &= ~ATH9K_ANI_MRC_CCK;
- ath9k_hw_init_mode_regs(ah);
-
if (!ah->is_pciexpress)
ath9k_hw_disablepcie(ah);
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index d32ebf7a2414..195613ff72ee 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -600,7 +600,6 @@ struct ath_hw_radar_conf {
* @init_cal_settings: setup types of calibrations supported
* @init_cal: starts actual calibration
*
- * @init_mode_regs: Initializes mode registers
* @init_mode_gain_regs: Initialize TX/RX gain registers
*
* @rf_set_freq: change frequency
@@ -619,7 +618,6 @@ struct ath_hw_private_ops {
void (*init_cal_settings)(struct ath_hw *ah);
bool (*init_cal)(struct ath_hw *ah, struct ath9k_channel *chan);
- void (*init_mode_regs)(struct ath_hw *ah);
void (*init_mode_gain_regs)(struct ath_hw *ah);
void (*setup_calibration)(struct ath_hw *ah,
struct ath9k_cal_list *currCal);
--
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