This prepares the driver for changing all the 'read' register accessors
to return the value instead of passing it by reference. Since a lot
of them are used in callbacks, this takes care of the callbacks first,
adding a couple of helpers that will be removed again one at a time.

Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
 drivers/net/wireless/ralink/rt2x00/rt2400pci.c   | 18 +++++++++++----
 drivers/net/wireless/ralink/rt2x00/rt2500pci.c   | 18 +++++++++++----
 drivers/net/wireless/ralink/rt2x00/rt2500usb.c   | 24 ++++++++++++++------
 drivers/net/wireless/ralink/rt2x00/rt2800lib.c   | 28 +++++++++++++++++++-----
 drivers/net/wireless/ralink/rt2x00/rt2800lib.h   | 20 ++++++++++++-----
 drivers/net/wireless/ralink/rt2x00/rt2800pci.c   |  4 ++--
 drivers/net/wireless/ralink/rt2x00/rt2800soc.c   |  4 ++--
 drivers/net/wireless/ralink/rt2x00/rt2800usb.c   |  4 ++--
 drivers/net/wireless/ralink/rt2x00/rt2x00.h      | 13 +++++++++++
 drivers/net/wireless/ralink/rt2x00/rt2x00debug.c |  2 +-
 drivers/net/wireless/ralink/rt2x00/rt2x00debug.h |  4 ++--
 drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h  |  6 +++++
 drivers/net/wireless/ralink/rt2x00/rt2x00usb.h   | 22 ++++++++++++++++++-
 drivers/net/wireless/ralink/rt2x00/rt61pci.c     | 17 ++++++++++----
 drivers/net/wireless/ralink/rt2x00/rt73usb.c     | 17 ++++++++++----
 15 files changed, 157 insertions(+), 44 deletions(-)

diff --git a/drivers/net/wireless/ralink/rt2x00/rt2400pci.c 
b/drivers/net/wireless/ralink/rt2x00/rt2400pci.c
index 19874439ac40..3ba9a1674e1d 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2400pci.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2400pci.c
@@ -164,10 +164,20 @@ static void rt2400pci_eepromregister_write(struct 
eeprom_93cx6 *eeprom)
 }
 
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
+static u8 _rt2400pci_bbp_read(struct rt2x00_dev *rt2x00dev,
+                             const unsigned int word)
+{
+       u8 value;
+
+       rt2400pci_bbp_read(rt2x00dev, word, &value);
+
+       return value;
+}
+
 static const struct rt2x00debug rt2400pci_rt2x00debug = {
        .owner  = THIS_MODULE,
        .csr    = {
-               .read           = rt2x00mmio_register_read,
+               .read           = _rt2x00mmio_register_read,
                .write          = rt2x00mmio_register_write,
                .flags          = RT2X00DEBUGFS_OFFSET,
                .word_base      = CSR_REG_BASE,
@@ -175,21 +185,21 @@ static const struct rt2x00debug rt2400pci_rt2x00debug = {
                .word_count     = CSR_REG_SIZE / sizeof(u32),
        },
        .eeprom = {
-               .read           = rt2x00_eeprom_read,
+               .read           = _rt2x00_eeprom_read,
                .write          = rt2x00_eeprom_write,
                .word_base      = EEPROM_BASE,
                .word_size      = sizeof(u16),
                .word_count     = EEPROM_SIZE / sizeof(u16),
        },
        .bbp    = {
-               .read           = rt2400pci_bbp_read,
+               .read           = _rt2400pci_bbp_read,
                .write          = rt2400pci_bbp_write,
                .word_base      = BBP_BASE,
                .word_size      = sizeof(u8),
                .word_count     = BBP_SIZE / sizeof(u8),
        },
        .rf     = {
-               .read           = rt2x00_rf_read,
+               .read           = _rt2x00_rf_read,
                .write          = rt2400pci_rf_write,
                .word_base      = RF_BASE,
                .word_size      = sizeof(u32),
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2500pci.c 
b/drivers/net/wireless/ralink/rt2x00/rt2500pci.c
index 791434de8052..d9b061b73e83 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2500pci.c
@@ -164,10 +164,20 @@ static void rt2500pci_eepromregister_write(struct 
eeprom_93cx6 *eeprom)
 }
 
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
+static u8 _rt2500pci_bbp_read(struct rt2x00_dev *rt2x00dev,
+                             const unsigned int word)
+{
+       u8 value;
+
+       rt2500pci_bbp_read(rt2x00dev, word, &value);
+
+       return value;
+}
+
 static const struct rt2x00debug rt2500pci_rt2x00debug = {
        .owner  = THIS_MODULE,
        .csr    = {
-               .read           = rt2x00mmio_register_read,
+               .read           = _rt2x00mmio_register_read,
                .write          = rt2x00mmio_register_write,
                .flags          = RT2X00DEBUGFS_OFFSET,
                .word_base      = CSR_REG_BASE,
@@ -175,21 +185,21 @@ static const struct rt2x00debug rt2500pci_rt2x00debug = {
                .word_count     = CSR_REG_SIZE / sizeof(u32),
        },
        .eeprom = {
-               .read           = rt2x00_eeprom_read,
+               .read           = _rt2x00_eeprom_read,
                .write          = rt2x00_eeprom_write,
                .word_base      = EEPROM_BASE,
                .word_size      = sizeof(u16),
                .word_count     = EEPROM_SIZE / sizeof(u16),
        },
        .bbp    = {
-               .read           = rt2500pci_bbp_read,
+               .read           = _rt2500pci_bbp_read,
                .write          = rt2500pci_bbp_write,
                .word_base      = BBP_BASE,
                .word_size      = sizeof(u8),
                .word_count     = BBP_SIZE / sizeof(u8),
        },
        .rf     = {
-               .read           = rt2x00_rf_read,
+               .read           = _rt2x00_rf_read,
                .write          = rt2500pci_rf_write,
                .word_base      = RF_BASE,
                .word_size      = sizeof(u32),
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2500usb.c 
b/drivers/net/wireless/ralink/rt2x00/rt2500usb.c
index 0d2670a56c4c..5bd160f732de 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2500usb.c
@@ -216,14 +216,14 @@ static void rt2500usb_rf_write(struct rt2x00_dev 
*rt2x00dev,
 }
 
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
-static void _rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
-                                    const unsigned int offset,
-                                    u32 *value)
+static u32 _rt2500usb_register_read(struct rt2x00_dev *rt2x00dev,
+                                    const unsigned int offset)
 {
        u16 tmp;
 
        rt2500usb_register_read(rt2x00dev, offset, &tmp);
-       *value = tmp;
+
+       return tmp;
 }
 
 static void _rt2500usb_register_write(struct rt2x00_dev *rt2x00dev,
@@ -233,6 +233,16 @@ static void _rt2500usb_register_write(struct rt2x00_dev 
*rt2x00dev,
        rt2500usb_register_write(rt2x00dev, offset, value);
 }
 
+static u8 _rt2500usb_bbp_read(struct rt2x00_dev *rt2x00dev,
+                             const unsigned int word)
+{
+       u8 value;
+
+       rt2500usb_bbp_read(rt2x00dev, word, &value);
+
+       return value;
+}
+
 static const struct rt2x00debug rt2500usb_rt2x00debug = {
        .owner  = THIS_MODULE,
        .csr    = {
@@ -244,21 +254,21 @@ static const struct rt2x00debug rt2500usb_rt2x00debug = {
                .word_count     = CSR_REG_SIZE / sizeof(u16),
        },
        .eeprom = {
-               .read           = rt2x00_eeprom_read,
+               .read           = _rt2x00_eeprom_read,
                .write          = rt2x00_eeprom_write,
                .word_base      = EEPROM_BASE,
                .word_size      = sizeof(u16),
                .word_count     = EEPROM_SIZE / sizeof(u16),
        },
        .bbp    = {
-               .read           = rt2500usb_bbp_read,
+               .read           = _rt2500usb_bbp_read,
                .write          = rt2500usb_bbp_write,
                .word_base      = BBP_BASE,
                .word_size      = sizeof(u8),
                .word_count     = BBP_SIZE / sizeof(u8),
        },
        .rf     = {
-               .read           = rt2x00_rf_read,
+               .read           = _rt2x00_rf_read,
                .write          = rt2500usb_rf_write,
                .word_base      = RF_BASE,
                .word_size      = sizeof(u32),
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c 
b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index d11c7b210e81..87cfc135e564 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -1225,10 +1225,28 @@ void rt2800_clear_beacon(struct queue_entry *entry)
 EXPORT_SYMBOL_GPL(rt2800_clear_beacon);
 
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
+static u8 _rt2800_bbp_read(struct rt2x00_dev *rt2x00dev, const unsigned int 
word)
+{
+       u8 value;
+
+       rt2800_bbp_read(rt2x00dev, word, &value);
+
+       return value;
+}
+
+static u8 _rt2800_rfcsr_read(struct rt2x00_dev *rt2x00dev, const unsigned int 
word)
+{
+       u8 value;
+
+       rt2800_rfcsr_read(rt2x00dev, word, &value);
+
+       return value;
+}
+
 const struct rt2x00debug rt2800_rt2x00debug = {
        .owner  = THIS_MODULE,
        .csr    = {
-               .read           = rt2800_register_read,
+               .read           = _rt2800_register_read,
                .write          = rt2800_register_write,
                .flags          = RT2X00DEBUGFS_OFFSET,
                .word_base      = CSR_REG_BASE,
@@ -1239,28 +1257,28 @@ const struct rt2x00debug rt2800_rt2x00debug = {
                /* NOTE: The local EEPROM access functions can't
                 * be used here, use the generic versions instead.
                 */
-               .read           = rt2x00_eeprom_read,
+               .read           = _rt2x00_eeprom_read,
                .write          = rt2x00_eeprom_write,
                .word_base      = EEPROM_BASE,
                .word_size      = sizeof(u16),
                .word_count     = EEPROM_SIZE / sizeof(u16),
        },
        .bbp    = {
-               .read           = rt2800_bbp_read,
+               .read           = _rt2800_bbp_read,
                .write          = rt2800_bbp_write,
                .word_base      = BBP_BASE,
                .word_size      = sizeof(u8),
                .word_count     = BBP_SIZE / sizeof(u8),
        },
        .rf     = {
-               .read           = rt2x00_rf_read,
+               .read           = _rt2x00_rf_read,
                .write          = rt2800_rf_write,
                .word_base      = RF_BASE,
                .word_size      = sizeof(u32),
                .word_count     = RF_SIZE / sizeof(u32),
        },
        .rfcsr  = {
-               .read           = rt2800_rfcsr_read,
+               .read           = _rt2800_rfcsr_read,
                .write          = rt2800_rfcsr_write,
                .word_base      = RFCSR_BASE,
                .word_size      = sizeof(u8),
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h 
b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
index f357531d9488..6bed0d5e930e 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
@@ -49,10 +49,10 @@ struct rt2800_drv_data {
 };
 
 struct rt2800_ops {
-       void (*register_read)(struct rt2x00_dev *rt2x00dev,
-                             const unsigned int offset, u32 *value);
-       void (*register_read_lock)(struct rt2x00_dev *rt2x00dev,
-                                  const unsigned int offset, u32 *value);
+       u32 (*register_read)(struct rt2x00_dev *rt2x00dev,
+                             const unsigned int offset);
+       u32 (*register_read_lock)(struct rt2x00_dev *rt2x00dev,
+                                  const unsigned int offset);
        void (*register_write)(struct rt2x00_dev *rt2x00dev,
                               const unsigned int offset, u32 value);
        void (*register_write_lock)(struct rt2x00_dev *rt2x00dev,
@@ -84,7 +84,7 @@ static inline void rt2800_register_read(struct rt2x00_dev 
*rt2x00dev,
 {
        const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
-       rt2800ops->register_read(rt2x00dev, offset, value);
+       *value = rt2800ops->register_read(rt2x00dev, offset);
 }
 
 static inline void rt2800_register_read_lock(struct rt2x00_dev *rt2x00dev,
@@ -93,7 +93,15 @@ static inline void rt2800_register_read_lock(struct 
rt2x00_dev *rt2x00dev,
 {
        const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
 
-       rt2800ops->register_read_lock(rt2x00dev, offset, value);
+       *value = rt2800ops->register_read_lock(rt2x00dev, offset);
+}
+
+static inline u32 _rt2800_register_read(struct rt2x00_dev *rt2x00dev,
+                                       const unsigned int offset)
+{
+       const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv;
+
+       return rt2800ops->register_read(rt2x00dev, offset);
 }
 
 static inline void rt2800_register_write(struct rt2x00_dev *rt2x00dev,
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800pci.c 
b/drivers/net/wireless/ralink/rt2x00/rt2800pci.c
index 0af22573a2eb..98f16312e3f1 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800pci.c
@@ -325,8 +325,8 @@ static const struct ieee80211_ops rt2800pci_mac80211_ops = {
 };
 
 static const struct rt2800_ops rt2800pci_rt2800_ops = {
-       .register_read          = rt2x00mmio_register_read,
-       .register_read_lock     = rt2x00mmio_register_read, /* same for PCI */
+       .register_read          = _rt2x00mmio_register_read,
+       .register_read_lock     = _rt2x00mmio_register_read, /* same for PCI */
        .register_write         = rt2x00mmio_register_write,
        .register_write_lock    = rt2x00mmio_register_write, /* same for PCI */
        .register_multiread     = rt2x00mmio_register_multiread,
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800soc.c 
b/drivers/net/wireless/ralink/rt2x00/rt2800soc.c
index a985a5a7945e..c1eda3798b9b 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800soc.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800soc.c
@@ -164,8 +164,8 @@ static const struct ieee80211_ops rt2800soc_mac80211_ops = {
 };
 
 static const struct rt2800_ops rt2800soc_rt2800_ops = {
-       .register_read          = rt2x00mmio_register_read,
-       .register_read_lock     = rt2x00mmio_register_read, /* same for SoCs */
+       .register_read          = _rt2x00mmio_register_read,
+       .register_read_lock     = _rt2x00mmio_register_read, /* same for SoCs */
        .register_write         = rt2x00mmio_register_write,
        .register_write_lock    = rt2x00mmio_register_write, /* same for SoCs */
        .register_multiread     = rt2x00mmio_register_multiread,
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800usb.c 
b/drivers/net/wireless/ralink/rt2x00/rt2800usb.c
index f11e3f532a84..7fd7e6114c0c 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800usb.c
@@ -802,8 +802,8 @@ static const struct ieee80211_ops rt2800usb_mac80211_ops = {
 };
 
 static const struct rt2800_ops rt2800usb_rt2800_ops = {
-       .register_read          = rt2x00usb_register_read,
-       .register_read_lock     = rt2x00usb_register_read_lock,
+       .register_read          = _rt2x00usb_register_read,
+       .register_read_lock     = _rt2x00usb_register_read_lock,
        .register_write         = rt2x00usb_register_write,
        .register_write_lock    = rt2x00usb_register_write_lock,
        .register_multiread     = rt2x00usb_register_multiread,
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h 
b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
index 1bc353eafe37..f2ae33bf2ef2 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
@@ -1056,6 +1056,13 @@ static inline void rt2x00_rf_read(struct rt2x00_dev 
*rt2x00dev,
        *data = rt2x00dev->rf[word - 1];
 }
 
+static inline u32 _rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
+                                 const unsigned int word)
+{
+       BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
+       return rt2x00dev->rf[word - 1];
+}
+
 static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
                                   const unsigned int word, u32 data)
 {
@@ -1078,6 +1085,12 @@ static inline void rt2x00_eeprom_read(struct rt2x00_dev 
*rt2x00dev,
        *data = le16_to_cpu(rt2x00dev->eeprom[word]);
 }
 
+static inline u16 _rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev,
+                                     const unsigned int word)
+{
+       return le16_to_cpu(rt2x00dev->eeprom[word]);
+}
+
 static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev,
                                       const unsigned int word, u16 data)
 {
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c 
b/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c
index 964aefdc11f0..4a1bca1b1e26 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c
@@ -460,7 +460,7 @@ static ssize_t rt2x00debug_read_##__name(struct file *file, 
\
        if (debug->__name.flags & RT2X00DEBUGFS_OFFSET)         \
                index *= debug->__name.word_size;               \
                                                                \
-       debug->__name.read(intf->rt2x00dev, index, &value);     \
+       value = debug->__name.read(intf->rt2x00dev, index);     \
                                                                \
        size = sprintf(line, __format, value);                  \
                                                                \
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00debug.h 
b/drivers/net/wireless/ralink/rt2x00/rt2x00debug.h
index e65712c235bd..a357a0727a0b 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00debug.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00debug.h
@@ -38,8 +38,8 @@ enum rt2x00debugfs_entry_flags {
 
 #define RT2X00DEBUGFS_REGISTER_ENTRY(__name, __type)           \
 struct reg##__name {                                           \
-       void (*read)(struct rt2x00_dev *rt2x00dev,              \
-                    const unsigned int word, __type *data);    \
+       __type (*read)(struct rt2x00_dev *rt2x00dev,            \
+                    const unsigned int word);                  \
        void (*write)(struct rt2x00_dev *rt2x00dev,             \
                      const unsigned int word, __type data);    \
                                                                \
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h 
b/drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h
index 701c3127efb9..6d7a27ee6444 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00mmio.h
@@ -36,6 +36,12 @@ static inline void rt2x00mmio_register_read(struct 
rt2x00_dev *rt2x00dev,
        *value = readl(rt2x00dev->csr.base + offset);
 }
 
+static inline u32 _rt2x00mmio_register_read(struct rt2x00_dev *rt2x00dev,
+                                          const unsigned int offset)
+{
+       return readl(rt2x00dev->csr.base + offset);
+}
+
 static inline void rt2x00mmio_register_multiread(struct rt2x00_dev *rt2x00dev,
                                                 const unsigned int offset,
                                                 void *value, const u32 length)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.h 
b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.h
index 569363da00a2..4cad1beec791 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.h
@@ -206,6 +206,16 @@ static inline void rt2x00usb_register_read(struct 
rt2x00_dev *rt2x00dev,
        *value = le32_to_cpu(reg);
 }
 
+static inline u32 _rt2x00usb_register_read(struct rt2x00_dev *rt2x00dev,
+                                          const unsigned int offset)
+{
+       __le32 reg = 0;
+       rt2x00usb_vendor_request_buff(rt2x00dev, USB_MULTI_READ,
+                                     USB_VENDOR_REQUEST_IN, offset,
+                                     &reg, sizeof(reg));
+       return le32_to_cpu(reg);
+}
+
 /**
  * rt2x00usb_register_read_lock - Read 32bit register word
  * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
@@ -216,7 +226,7 @@ static inline void rt2x00usb_register_read(struct 
rt2x00_dev *rt2x00dev,
  * through rt2x00usb_vendor_req_buff_lock().
  */
 static inline void rt2x00usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
-                                               const unsigned int offset,
+                                               const unsigned int offset,
                                                u32 *value)
 {
        __le32 reg = 0;
@@ -226,6 +236,16 @@ static inline void rt2x00usb_register_read_lock(struct 
rt2x00_dev *rt2x00dev,
        *value = le32_to_cpu(reg);
 }
 
+static inline u32 _rt2x00usb_register_read_lock(struct rt2x00_dev *rt2x00dev,
+                                               const unsigned int offset)
+{
+       __le32 reg = 0;
+       rt2x00usb_vendor_req_buff_lock(rt2x00dev, USB_MULTI_READ,
+                                      USB_VENDOR_REQUEST_IN, offset,
+                                      &reg, sizeof(reg), REGISTER_TIMEOUT);
+       return le32_to_cpu(reg);
+}
+
 /**
  * rt2x00usb_register_multiread - Read 32bit register words
  * @rt2x00dev: Device pointer, see &struct rt2x00_dev.
diff --git a/drivers/net/wireless/ralink/rt2x00/rt61pci.c 
b/drivers/net/wireless/ralink/rt2x00/rt61pci.c
index 973d418b8113..efe8a766b251 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt61pci.c
@@ -202,10 +202,19 @@ static void rt61pci_eepromregister_write(struct 
eeprom_93cx6 *eeprom)
 }
 
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
+static u8 _rt61pci_bbp_read(struct rt2x00_dev *rt2x00dev, const unsigned int 
word)
+{
+       u8 value;
+
+       rt61pci_bbp_read(rt2x00dev, word, &value);
+
+       return value;
+}
+
 static const struct rt2x00debug rt61pci_rt2x00debug = {
        .owner  = THIS_MODULE,
        .csr    = {
-               .read           = rt2x00mmio_register_read,
+               .read           = _rt2x00mmio_register_read,
                .write          = rt2x00mmio_register_write,
                .flags          = RT2X00DEBUGFS_OFFSET,
                .word_base      = CSR_REG_BASE,
@@ -213,21 +222,21 @@ static const struct rt2x00debug rt61pci_rt2x00debug = {
                .word_count     = CSR_REG_SIZE / sizeof(u32),
        },
        .eeprom = {
-               .read           = rt2x00_eeprom_read,
+               .read           = _rt2x00_eeprom_read,
                .write          = rt2x00_eeprom_write,
                .word_base      = EEPROM_BASE,
                .word_size      = sizeof(u16),
                .word_count     = EEPROM_SIZE / sizeof(u16),
        },
        .bbp    = {
-               .read           = rt61pci_bbp_read,
+               .read           = _rt61pci_bbp_read,
                .write          = rt61pci_bbp_write,
                .word_base      = BBP_BASE,
                .word_size      = sizeof(u8),
                .word_count     = BBP_SIZE / sizeof(u8),
        },
        .rf     = {
-               .read           = rt2x00_rf_read,
+               .read           = _rt2x00_rf_read,
                .write          = rt61pci_rf_write,
                .word_base      = RF_BASE,
                .word_size      = sizeof(u32),
diff --git a/drivers/net/wireless/ralink/rt2x00/rt73usb.c 
b/drivers/net/wireless/ralink/rt2x00/rt73usb.c
index bb8d307a789f..5db174922120 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt73usb.c
@@ -147,10 +147,19 @@ static void rt73usb_rf_write(struct rt2x00_dev *rt2x00dev,
 }
 
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
+static u8 _rt73usb_bbp_read(struct rt2x00_dev *rt2x00dev, const unsigned int 
word)
+{
+       u8 value;
+
+       rt73usb_bbp_read(rt2x00dev, word, &value);
+
+       return value;
+}
+
 static const struct rt2x00debug rt73usb_rt2x00debug = {
        .owner  = THIS_MODULE,
        .csr    = {
-               .read           = rt2x00usb_register_read,
+               .read           = _rt2x00usb_register_read,
                .write          = rt2x00usb_register_write,
                .flags          = RT2X00DEBUGFS_OFFSET,
                .word_base      = CSR_REG_BASE,
@@ -158,21 +167,21 @@ static const struct rt2x00debug rt73usb_rt2x00debug = {
                .word_count     = CSR_REG_SIZE / sizeof(u32),
        },
        .eeprom = {
-               .read           = rt2x00_eeprom_read,
+               .read           = _rt2x00_eeprom_read,
                .write          = rt2x00_eeprom_write,
                .word_base      = EEPROM_BASE,
                .word_size      = sizeof(u16),
                .word_count     = EEPROM_SIZE / sizeof(u16),
        },
        .bbp    = {
-               .read           = rt73usb_bbp_read,
+               .read           = _rt73usb_bbp_read,
                .write          = rt73usb_bbp_write,
                .word_base      = BBP_BASE,
                .word_size      = sizeof(u8),
                .word_count     = BBP_SIZE / sizeof(u8),
        },
        .rf     = {
-               .read           = rt2x00_rf_read,
+               .read           = _rt2x00_rf_read,
                .write          = rt73usb_rf_write,
                .word_base      = RF_BASE,
                .word_size      = sizeof(u32),
-- 
2.9.0

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