diff options
Diffstat (limited to 'package/kernel/mac80211/patches/600-0003-rt2x00-rt2800-serialize-shared-memory-access.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/600-0003-rt2x00-rt2800-serialize-shared-memory-access.patch | 531 |
1 files changed, 0 insertions, 531 deletions
diff --git a/package/kernel/mac80211/patches/600-0003-rt2x00-rt2800-serialize-shared-memory-access.patch b/package/kernel/mac80211/patches/600-0003-rt2x00-rt2800-serialize-shared-memory-access.patch deleted file mode 100644 index a3b62bcc14..0000000000 --- a/package/kernel/mac80211/patches/600-0003-rt2x00-rt2800-serialize-shared-memory-access.patch +++ /dev/null @@ -1,531 +0,0 @@ -From 250a1b520cd7fdc0df4fc3fedea9066913f49ecf Mon Sep 17 00:00:00 2001 -From: Gabor Juhos <juhosg@openwrt.org> -Date: Sat, 17 Aug 2013 19:31:42 +0200 -Subject: [PATCH] rt2x00: rt2800: serialize shared memory access - -The shared memory of the rt2800 devices is accessible -through the register offset range between 0x4000 and -0x8000. The size of this range is 16KB only and on -devices which have more than 16KB of shared memory either -the low or the high part of the memory is accessible at a -time. - -Serialize all accesses to the shared memory by a mutex, -in order to avoid concurrent use of that. - -Signed-off-by: Gabor Juhos <juhosg@openwrt.org> ---- -Changes since v1: --- ---- - drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 55 +++++++++++++++++++++++++++++- - drivers/net/wireless/ralink/rt2x00/rt2800lib.h | 32 +++++++++++++++++ - drivers/net/wireless/ralink/rt2x00/rt2800mmio.c | 26 ++++++++++++++ - drivers/net/wireless/ralink/rt2x00/rt2800mmio.h | 4 +++ - drivers/net/wireless/ralink/rt2x00/rt2800pci.c | 14 ++++++++ - drivers/net/wireless/ralink/rt2x00/rt2800soc.c | 3 ++ - drivers/net/wireless/ralink/rt2x00/rt2800usb.c | 31 +++++++++++++++++ - 7 files changed, 164 insertions(+), 1 deletion(-) - ---- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c -@@ -451,11 +451,13 @@ void rt2800_mcu_request(struct rt2x00_de - rt2x00_set_field32(®, H2M_MAILBOX_CSR_CMD_TOKEN, token); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG0, arg0); - rt2x00_set_field32(®, H2M_MAILBOX_CSR_ARG1, arg1); -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_write_lock(rt2x00dev, H2M_MAILBOX_CSR, reg); - - reg = 0; - rt2x00_set_field32(®, HOST_CMD_CSR_HOST_COMMAND, command); - rt2800_register_write_lock(rt2x00dev, HOST_CMD_CSR, reg); -+ rt2800_shared_mem_unlock(rt2x00dev); - } - - mutex_unlock(&rt2x00dev->csr_mutex); -@@ -674,7 +676,9 @@ int rt2800_load_firmware(struct rt2x00_d - * Wait for device to stabilize. - */ - for (i = 0; i < REGISTER_BUSY_COUNT; i++) { -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_read(rt2x00dev, PBF_SYS_CTRL, ®); -+ rt2800_shared_mem_unlock(rt2x00dev); - if (rt2x00_get_field32(reg, PBF_SYS_CTRL_READY)) - break; - msleep(1); -@@ -694,10 +698,16 @@ int rt2800_load_firmware(struct rt2x00_d - /* - * Initialize firmware. - */ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0); - rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0); -+ rt2800_shared_mem_unlock(rt2x00dev); -+ - if (rt2x00_is_usb(rt2x00dev)) { -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_write(rt2x00dev, H2M_INT_SRC, 0); -+ rt2800_shared_mem_unlock(rt2x00dev); -+ - rt2800_mcu_request(rt2x00dev, MCU_BOOT_SIGNAL, 0, 0, 0); - } - msleep(1); -@@ -1035,8 +1045,10 @@ void rt2800_write_beacon(struct queue_en - - beacon_base = rt2800_hw_beacon_base(rt2x00dev, entry->entry_idx); - -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_multiwrite(rt2x00dev, beacon_base, entry->skb->data, - entry->skb->len + padding_len); -+ rt2800_shared_mem_unlock(rt2x00dev); - __set_bit(ENTRY_BCN_ENABLED, &entry->flags); - - /* -@@ -1066,6 +1078,8 @@ static inline void rt2800_clear_beacon_r - - beacon_base = rt2800_hw_beacon_base(rt2x00dev, index); - -+ rt2800_shared_mem_lock(rt2x00dev); -+ - /* - * For the Beacon base registers we only need to clear - * the whole TXWI which (when set to 0) will invalidate -@@ -1073,6 +1087,8 @@ static inline void rt2800_clear_beacon_r - */ - for (i = 0; i < txwi_desc_size; i += sizeof(__le32)) - rt2800_register_write(rt2x00dev, beacon_base + i, 0); -+ -+ rt2800_shared_mem_unlock(rt2x00dev); - } - - void rt2800_clear_beacon(struct queue_entry *entry) -@@ -1261,7 +1277,9 @@ static void rt2800_delete_wcid_attr(stru - { - u32 offset; - offset = MAC_WCID_ATTR_ENTRY(wcid); -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_write(rt2x00dev, offset, 0); -+ rt2800_shared_mem_unlock(rt2x00dev); - } - - static void rt2800_config_wcid_attr_bssidx(struct rt2x00_dev *rt2x00dev, -@@ -1274,11 +1292,13 @@ static void rt2800_config_wcid_attr_bssi - * The BSS Idx numbers is split in a main value of 3 bits, - * and a extended field for adding one additional bit to the value. - */ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_read(rt2x00dev, offset, ®); - rt2x00_set_field32(®, MAC_WCID_ATTRIBUTE_BSS_IDX, (bssidx & 0x7)); - rt2x00_set_field32(®, MAC_WCID_ATTRIBUTE_BSS_IDX_EXT, - (bssidx & 0x8) >> 3); - rt2800_register_write(rt2x00dev, offset, reg); -+ rt2800_shared_mem_unlock(rt2x00dev); - } - - static void rt2800_config_wcid_attr_cipher(struct rt2x00_dev *rt2x00dev, -@@ -1291,6 +1311,7 @@ static void rt2800_config_wcid_attr_ciph - - offset = MAC_WCID_ATTR_ENTRY(key->hw_key_idx); - -+ rt2800_shared_mem_lock(rt2x00dev); - if (crypto->cmd == SET_KEY) { - rt2800_register_read(rt2x00dev, offset, ®); - rt2x00_set_field32(®, MAC_WCID_ATTRIBUTE_KEYTAB, -@@ -1315,6 +1336,7 @@ static void rt2800_config_wcid_attr_ciph - rt2x00_set_field32(®, MAC_WCID_ATTRIBUTE_RX_WIUDF, 0); - rt2800_register_write(rt2x00dev, offset, reg); - } -+ rt2800_shared_mem_unlock(rt2x00dev); - - offset = MAC_IVEIV_ENTRY(key->hw_key_idx); - -@@ -1324,8 +1346,11 @@ static void rt2800_config_wcid_attr_ciph - (crypto->cipher == CIPHER_AES)) - iveiv_entry.iv[3] |= 0x20; - iveiv_entry.iv[3] |= key->keyidx << 6; -+ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_multiwrite(rt2x00dev, offset, - &iveiv_entry, sizeof(iveiv_entry)); -+ rt2800_shared_mem_unlock(rt2x00dev); - } - - int rt2800_config_shared_key(struct rt2x00_dev *rt2x00dev, -@@ -1348,8 +1373,11 @@ int rt2800_config_shared_key(struct rt2x - sizeof(key_entry.rx_mic)); - - offset = SHARED_KEY_ENTRY(key->hw_key_idx); -+ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_multiwrite(rt2x00dev, offset, - &key_entry, sizeof(key_entry)); -+ rt2800_shared_mem_unlock(rt2x00dev); - } - - /* -@@ -1364,10 +1392,12 @@ int rt2800_config_shared_key(struct rt2x - - offset = SHARED_KEY_MODE_ENTRY(key->hw_key_idx / 8); - -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_read(rt2x00dev, offset, ®); - rt2x00_set_field32(®, field, - (crypto->cmd == SET_KEY) * crypto->cipher); - rt2800_register_write(rt2x00dev, offset, reg); -+ rt2800_shared_mem_unlock(rt2x00dev); - - /* - * Update WCID information -@@ -1405,8 +1435,11 @@ int rt2800_config_pairwise_key(struct rt - sizeof(key_entry.rx_mic)); - - offset = PAIRWISE_KEY_ENTRY(key->hw_key_idx); -+ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_multiwrite(rt2x00dev, offset, - &key_entry, sizeof(key_entry)); -+ rt2800_shared_mem_unlock(rt2x00dev); - } - - /* -@@ -4885,14 +4918,19 @@ static int rt2800_init_registers(struct - /* - * ASIC will keep garbage value after boot, clear encryption keys. - */ -+ rt2800_shared_mem_lock(rt2x00dev); - for (i = 0; i < 4; i++) - rt2800_register_write(rt2x00dev, - SHARED_KEY_MODE_ENTRY(i), 0); -+ rt2800_shared_mem_unlock(rt2x00dev); - - for (i = 0; i < 256; i++) { - rt2800_config_wcid(rt2x00dev, NULL, i); - rt2800_delete_wcid_attr(rt2x00dev, i); -+ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_write(rt2x00dev, MAC_IVEIV_ENTRY(i), 0); -+ rt2800_shared_mem_unlock(rt2x00dev); - } - - /* -@@ -5018,8 +5056,10 @@ static int rt2800_wait_bbp_ready(struct - * BBP was enabled after firmware was loaded, - * but we need to reactivate it now. - */ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0); - rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0); -+ rt2800_shared_mem_unlock(rt2x00dev); - msleep(1); - - for (i = 0; i < REGISTER_BUSY_COUNT; i++) { -@@ -6715,11 +6755,19 @@ int rt2800_enable_radio(struct rt2x00_de - /* - * Send signal during boot time to initialize firmware. - */ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_write(rt2x00dev, H2M_BBP_AGENT, 0); - rt2800_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0); -- if (rt2x00_is_usb(rt2x00dev)) -+ rt2800_shared_mem_unlock(rt2x00dev); -+ -+ if (rt2x00_is_usb(rt2x00dev)) { -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_write(rt2x00dev, H2M_INT_SRC, 0); -+ rt2800_shared_mem_unlock(rt2x00dev); -+ } -+ - rt2800_mcu_request(rt2x00dev, MCU_BOOT_SIGNAL, 0, 0, 0); -+ - msleep(1); - - /* -@@ -7730,6 +7778,8 @@ int rt2800_probe_hw(struct rt2x00_dev *r - int retval; - u32 reg; - -+ rt2800_shared_mem_init_lock(rt2x00dev); -+ - retval = rt2800_probe_rt(rt2x00dev); - if (retval) - return retval; -@@ -7813,8 +7863,11 @@ void rt2800_get_key_seq(struct ieee80211 - return; - - offset = MAC_IVEIV_ENTRY(key->hw_key_idx); -+ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2800_register_multiread(rt2x00dev, offset, - &iveiv_entry, sizeof(iveiv_entry)); -+ rt2800_shared_mem_unlock(rt2x00dev); - - memcpy(&seq->tkip.iv16, &iveiv_entry.iv[0], 2); - memcpy(&seq->tkip.iv32, &iveiv_entry.iv[4], 4); ---- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h -@@ -38,6 +38,11 @@ struct rt2800_drv_data { - DECLARE_BITMAP(sta_ids, STA_IDS_SIZE); - - unsigned long rt2800_flags; -+ -+ union { -+ spinlock_t spin; -+ struct mutex mutex; -+ } shmem_lock; - }; - - struct rt2800_ops { -@@ -68,6 +73,10 @@ struct rt2800_ops { - const u8 *data, const size_t len); - int (*drv_init_registers)(struct rt2x00_dev *rt2x00dev); - __le32 *(*drv_get_txwi)(struct queue_entry *entry); -+ -+ void (*shmem_init_lock)(struct rt2x00_dev *rt2x00dev); -+ void (*shmem_lock)(struct rt2x00_dev *rt2x00dev); -+ void (*shmem_unlock)(struct rt2x00_dev *rt2x00dev); - }; - - static inline bool rt2800_has_high_shared_mem(struct rt2x00_dev *rt2x00dev) -@@ -77,6 +86,29 @@ static inline bool rt2800_has_high_share - return test_bit(RT2800_HAS_HIGH_SHARED_MEM, &drv_data->rt2800_flags); - } - -+static inline void rt2800_shared_mem_init_lock(struct rt2x00_dev *rt2x00dev) -+{ -+ const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv; -+ -+ rt2800ops->shmem_init_lock(rt2x00dev); -+} -+ -+static inline void rt2800_shared_mem_lock(struct rt2x00_dev *rt2x00dev) -+{ -+ const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv; -+ -+ if (rt2800_has_high_shared_mem(rt2x00dev)) -+ rt2800ops->shmem_lock(rt2x00dev); -+} -+ -+static inline void rt2800_shared_mem_unlock(struct rt2x00_dev *rt2x00dev) -+{ -+ const struct rt2800_ops *rt2800ops = rt2x00dev->ops->drv; -+ -+ if (rt2800_has_high_shared_mem(rt2x00dev)) -+ rt2800ops->shmem_unlock(rt2x00dev); -+} -+ - static inline void rt2800_register_read(struct rt2x00_dev *rt2x00dev, - const unsigned int offset, - u32 *value) ---- a/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c -@@ -820,8 +820,10 @@ int rt2800mmio_init_registers(struct rt2 - rt2x00_set_field32(®, WPDMA_RST_IDX_DRX_IDX0, 1); - rt2x00mmio_register_write(rt2x00dev, WPDMA_RST_IDX, reg); - -+ rt2800_shared_mem_lock(rt2x00dev); - rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e1f); - rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e00); -+ rt2800_shared_mem_unlock(rt2x00dev); - - if (rt2x00_is_pcie(rt2x00dev) && - (rt2x00_rt(rt2x00dev, RT3090) || -@@ -865,6 +867,30 @@ int rt2800mmio_enable_radio(struct rt2x0 - } - EXPORT_SYMBOL_GPL(rt2800mmio_enable_radio); - -+void rt2800mmio_shmem_init_lock(struct rt2x00_dev *rt2x00dev) -+{ -+ struct rt2800_drv_data *drv_data = rt2x00dev->drv_data; -+ -+ spin_lock_init(&drv_data->shmem_lock.spin); -+} -+EXPORT_SYMBOL_GPL(rt2800mmio_shmem_init_lock); -+ -+void rt2800mmio_shmem_lock(struct rt2x00_dev *rt2x00dev) -+{ -+ struct rt2800_drv_data *drv_data = rt2x00dev->drv_data; -+ -+ spin_lock_bh(&drv_data->shmem_lock.spin); -+} -+EXPORT_SYMBOL_GPL(rt2800mmio_shmem_lock); -+ -+void rt2800mmio_shmem_unlock(struct rt2x00_dev *rt2x00dev) -+{ -+ struct rt2800_drv_data *drv_data = rt2x00dev->drv_data; -+ -+ spin_unlock_bh(&drv_data->shmem_lock.spin); -+} -+EXPORT_SYMBOL_GPL(rt2800mmio_shmem_unlock); -+ - MODULE_AUTHOR(DRV_PROJECT); - MODULE_VERSION(DRV_VERSION); - MODULE_DESCRIPTION("rt2800 MMIO library"); ---- a/drivers/net/wireless/ralink/rt2x00/rt2800mmio.h -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800mmio.h -@@ -160,4 +160,8 @@ int rt2800mmio_init_registers(struct rt2 - /* Device state switch handlers. */ - int rt2800mmio_enable_radio(struct rt2x00_dev *rt2x00dev); - -+void rt2800mmio_shmem_init_lock(struct rt2x00_dev *rt2x00dev); -+void rt2800mmio_shmem_lock(struct rt2x00_dev *rt2x00dev); -+void rt2800mmio_shmem_unlock(struct rt2x00_dev *rt2x00dev); -+ - #endif /* RT2800MMIO_H */ ---- a/drivers/net/wireless/ralink/rt2x00/rt2800pci.c -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800pci.c -@@ -69,7 +69,9 @@ static void rt2800pci_mcu_status(struct - return; - - for (i = 0; i < 200; i++) { -+ rt2800_shared_mem_lock(rt2x00dev); - rt2x00mmio_register_read(rt2x00dev, H2M_MAILBOX_CID, ®); -+ rt2800_shared_mem_unlock(rt2x00dev); - - if ((rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD0) == token) || - (rt2x00_get_field32(reg, H2M_MAILBOX_CID_CMD1) == token) || -@@ -83,8 +85,10 @@ static void rt2800pci_mcu_status(struct - if (i == 200) - rt2x00_err(rt2x00dev, "MCU request failed, no response from hardware\n"); - -+ rt2800_shared_mem_lock(rt2x00dev); - rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0); - rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0); -+ rt2800_shared_mem_unlock(rt2x00dev); - } - - static void rt2800pci_eepromregister_read(struct eeprom_93cx6 *eeprom) -@@ -184,6 +188,8 @@ static int rt2800pci_write_firmware(stru - */ - reg = 0; - rt2x00_set_field32(®, PBF_SYS_CTRL_HOST_RAM_WRITE, 1); -+ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2x00mmio_register_write(rt2x00dev, PBF_SYS_CTRL, reg); - - /* -@@ -197,6 +203,7 @@ static int rt2800pci_write_firmware(stru - - rt2x00mmio_register_write(rt2x00dev, H2M_BBP_AGENT, 0); - rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0); -+ rt2800_shared_mem_unlock(rt2x00dev); - - return 0; - } -@@ -213,8 +220,10 @@ static int rt2800pci_enable_radio(struct - return retval; - - /* After resume MCU_BOOT_SIGNAL will trash these. */ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0); - rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0); -+ rt2800_shared_mem_unlock(rt2x00dev); - - rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_RADIO_OFF, 0xff, 0x02); - rt2800pci_mcu_status(rt2x00dev, TOKEN_RADIO_OFF); -@@ -233,10 +242,12 @@ static int rt2800pci_set_state(struct rt - 0, 0x02); - rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKEUP); - } else if (state == STATE_SLEEP) { -+ rt2800_shared_mem_lock(rt2x00dev); - rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_STATUS, - 0xffffffff); - rt2x00mmio_register_write(rt2x00dev, H2M_MAILBOX_CID, - 0xffffffff); -+ rt2800_shared_mem_unlock(rt2x00dev); - rt2800_mcu_request(rt2x00dev, MCU_SLEEP, TOKEN_SLEEP, - 0xff, 0x01); - } -@@ -337,6 +348,9 @@ static const struct rt2800_ops rt2800pci - .drv_write_firmware = rt2800pci_write_firmware, - .drv_init_registers = rt2800mmio_init_registers, - .drv_get_txwi = rt2800mmio_get_txwi, -+ .shmem_init_lock = rt2800mmio_shmem_init_lock, -+ .shmem_lock = rt2800mmio_shmem_lock, -+ .shmem_unlock = rt2800mmio_shmem_unlock, - }; - - static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = { ---- a/drivers/net/wireless/ralink/rt2x00/rt2800soc.c -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800soc.c -@@ -176,6 +176,9 @@ static const struct rt2800_ops rt2800soc - .drv_write_firmware = rt2800soc_write_firmware, - .drv_init_registers = rt2800mmio_init_registers, - .drv_get_txwi = rt2800mmio_get_txwi, -+ .shmem_init_lock = rt2800mmio_shmem_init_lock, -+ .shmem_lock = rt2800mmio_shmem_lock, -+ .shmem_unlock = rt2800mmio_shmem_unlock, - }; - - static const struct rt2x00lib_ops rt2800soc_rt2x00_ops = { ---- a/drivers/net/wireless/ralink/rt2x00/rt2800usb.c -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800usb.c -@@ -51,6 +51,27 @@ static bool rt2800usb_hwcrypt_disabled(s - return modparam_nohwcrypt; - } - -+static void rt2800usb_shmem_init_lock(struct rt2x00_dev *rt2x00dev) -+{ -+ struct rt2800_drv_data *drv_data = rt2x00dev->drv_data; -+ -+ mutex_init(&drv_data->shmem_lock.mutex); -+} -+ -+static void rt2800usb_shmem_lock(struct rt2x00_dev *rt2x00dev) -+{ -+ struct rt2800_drv_data *drv_data = rt2x00dev->drv_data; -+ -+ mutex_lock(&drv_data->shmem_lock.mutex); -+} -+ -+static void rt2800usb_shmem_unlock(struct rt2x00_dev *rt2x00dev) -+{ -+ struct rt2800_drv_data *drv_data = rt2x00dev->drv_data; -+ -+ mutex_unlock(&drv_data->shmem_lock.mutex); -+} -+ - /* - * Queue handlers. - */ -@@ -299,8 +320,10 @@ static int rt2800usb_write_firmware(stru - data + offset, length); - } - -+ rt2800_shared_mem_lock(rt2x00dev); - rt2x00usb_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0); - rt2x00usb_register_write(rt2x00dev, H2M_MAILBOX_STATUS, ~0); -+ rt2800_shared_mem_unlock(rt2x00dev); - - /* - * Send firmware request to device to load firmware, -@@ -315,7 +338,10 @@ static int rt2800usb_write_firmware(stru - } - - msleep(10); -+ -+ rt2800_shared_mem_lock(rt2x00dev); - rt2x00usb_register_write(rt2x00dev, H2M_MAILBOX_CSR, 0); -+ rt2800_shared_mem_unlock(rt2x00dev); - - return 0; - } -@@ -333,8 +359,10 @@ static int rt2800usb_init_registers(stru - if (rt2800_wait_csr_ready(rt2x00dev)) - return -EBUSY; - -+ rt2800_shared_mem_lock(rt2x00dev); - rt2x00usb_register_read(rt2x00dev, PBF_SYS_CTRL, ®); - rt2x00usb_register_write(rt2x00dev, PBF_SYS_CTRL, reg & ~0x00002000); -+ rt2800_shared_mem_unlock(rt2x00dev); - - reg = 0; - rt2x00_set_field32(®, MAC_SYS_CTRL_RESET_CSR, 1); -@@ -863,6 +891,9 @@ static const struct rt2800_ops rt2800usb - .drv_write_firmware = rt2800usb_write_firmware, - .drv_init_registers = rt2800usb_init_registers, - .drv_get_txwi = rt2800usb_get_txwi, -+ .shmem_init_lock = rt2800usb_shmem_init_lock, -+ .shmem_lock = rt2800usb_shmem_lock, -+ .shmem_unlock = rt2800usb_shmem_unlock, - }; - - static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = { |