[PATCH 5.15 565/620] be2net: fix sleeping while atomic bugs in be_ndo_bridge_getlink

5.15-stable review patch. If anyone has any objections, please let me know.

------------------

From: Nikolay Aleksandrov razor@blackwall.org

[ Upstream commit 1a82d19ca2d6835904ee71e2d40fd331098f94a0 ]

Partially revert commit b71724147e73 ("be2net: replace polling with sleeping in the FW completion path") w.r.t mcc mutex it introduces and the use of usleep_range. The be2net be_ndo_bridge_getlink() callback is called with rcu_read_lock, so this code has been broken for a long time. Both the mutex_lock and the usleep_range can cause the issue Ian Kumlien reported[1]. The call path is: be_ndo_bridge_getlink -> be_cmd_get_hsw_config -> be_mcc_notify_wait -> be_mcc_wait_compl -> usleep_range()

[1] https://lore.kernel.org/netdev/CAA85sZveppNgEVa_FD+qhOMtG_AavK9_mFiU+jWrMtXm...

Tested-by: Ian Kumlien ian.kumlien@gmail.com Fixes: b71724147e73 ("be2net: replace polling with sleeping in the FW completion path") Signed-off-by: Nikolay Aleksandrov razor@blackwall.org Link: https://patch.msgid.link/20250227164129.1201164-1-razor@blackwall.org Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/emulex/benet/be.h | 2 +- drivers/net/ethernet/emulex/benet/be_cmds.c | 197 ++++++++++---------- drivers/net/ethernet/emulex/benet/be_main.c | 2 +- 3 files changed, 100 insertions(+), 101 deletions(-)

diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index 8689d4a51fe54..6e44000bddf1e 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -563,7 +563,7 @@ struct be_adapter { struct be_dma_mem mbox_mem_alloced;

struct be_mcc_obj mcc_obj; - struct mutex mcc_lock; /* For serializing mcc cmds to BE card */ + spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */ spinlock_t mcc_cq_lock;

u16 cfg_num_rx_irqs; /* configured via set-channels */ diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c index b4f5e57d0285c..88f69c486ed09 100644 --- a/drivers/net/ethernet/emulex/benet/be_cmds.c +++ b/drivers/net/ethernet/emulex/benet/be_cmds.c @@ -573,7 +573,7 @@ int be_process_mcc(struct be_adapter *adapter) /* Wait till no more pending mcc requests are present */ static int be_mcc_wait_compl(struct be_adapter *adapter) { -#define mcc_timeout 12000 /* 12s timeout */ +#define mcc_timeout 120000 /* 12s timeout */ int i, status = 0; struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;

@@ -587,7 +587,7 @@ static int be_mcc_wait_compl(struct be_adapter *adapter)

if (atomic_read(&mcc_obj->q.used) == 0) break; - usleep_range(500, 1000); + udelay(100); } if (i == mcc_timeout) { dev_err(&adapter->pdev->dev, "FW not responding\n"); @@ -865,7 +865,7 @@ static bool use_mcc(struct be_adapter *adapter) static int be_cmd_lock(struct be_adapter *adapter) { if (use_mcc(adapter)) { - mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock); return 0; } else { return mutex_lock_interruptible(&adapter->mbox_lock); @@ -876,7 +876,7 @@ static int be_cmd_lock(struct be_adapter *adapter) static void be_cmd_unlock(struct be_adapter *adapter) { if (use_mcc(adapter)) - return mutex_unlock(&adapter->mcc_lock); + return spin_unlock_bh(&adapter->mcc_lock); else return mutex_unlock(&adapter->mbox_lock); } @@ -1046,7 +1046,7 @@ int be_cmd_mac_addr_query(struct be_adapter *adapter, u8 *mac_addr, struct be_cmd_req_mac_query *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1075,7 +1075,7 @@ int be_cmd_mac_addr_query(struct be_adapter *adapter, u8 *mac_addr, }

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1087,7 +1087,7 @@ int be_cmd_pmac_add(struct be_adapter *adapter, const u8 *mac_addr, struct be_cmd_req_pmac_add *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1112,7 +1112,7 @@ int be_cmd_pmac_add(struct be_adapter *adapter, const u8 *mac_addr, }

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock);

if (base_status(status) == MCC_STATUS_UNAUTHORIZED_REQUEST) status = -EPERM; @@ -1130,7 +1130,7 @@ int be_cmd_pmac_del(struct be_adapter *adapter, u32 if_id, int pmac_id, u32 dom) if (pmac_id == -1) return 0;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1150,7 +1150,7 @@ int be_cmd_pmac_del(struct be_adapter *adapter, u32 if_id, int pmac_id, u32 dom) status = be_mcc_notify_wait(adapter);

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1413,7 +1413,7 @@ int be_cmd_rxq_create(struct be_adapter *adapter, struct be_dma_mem *q_mem = &rxq->dma_mem; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1443,7 +1443,7 @@ int be_cmd_rxq_create(struct be_adapter *adapter, }

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1507,7 +1507,7 @@ int be_cmd_rxq_destroy(struct be_adapter *adapter, struct be_queue_info *q) struct be_cmd_req_q_destroy *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1524,7 +1524,7 @@ int be_cmd_rxq_destroy(struct be_adapter *adapter, struct be_queue_info *q) q->created = false;

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1592,7 +1592,7 @@ int be_cmd_get_stats(struct be_adapter *adapter, struct be_dma_mem *nonemb_cmd) struct be_cmd_req_hdr *hdr; int status = 0;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1620,7 +1620,7 @@ int be_cmd_get_stats(struct be_adapter *adapter, struct be_dma_mem *nonemb_cmd) adapter->stats_cmd_sent = true;

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1636,7 +1636,7 @@ int lancer_cmd_get_pport_stats(struct be_adapter *adapter, CMD_SUBSYSTEM_ETH)) return -EPERM;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1659,7 +1659,7 @@ int lancer_cmd_get_pport_stats(struct be_adapter *adapter, adapter->stats_cmd_sent = true;

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1696,7 +1696,7 @@ int be_cmd_link_status_query(struct be_adapter *adapter, u16 *link_speed, struct be_cmd_req_link_status *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

if (link_status) *link_status = LINK_DOWN; @@ -1735,7 +1735,7 @@ int be_cmd_link_status_query(struct be_adapter *adapter, u16 *link_speed, }

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1746,7 +1746,7 @@ int be_cmd_get_die_temperature(struct be_adapter *adapter) struct be_cmd_req_get_cntl_addnl_attribs *req; int status = 0;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1761,7 +1761,7 @@ int be_cmd_get_die_temperature(struct be_adapter *adapter)

status = be_mcc_notify(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1810,7 +1810,7 @@ int be_cmd_get_fat_dump(struct be_adapter *adapter, u32 buf_len, void *buf) if (!get_fat_cmd.va) return -ENOMEM;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

while (total_size) { buf_size = min(total_size, (u32)60*1024); @@ -1848,9 +1848,9 @@ int be_cmd_get_fat_dump(struct be_adapter *adapter, u32 buf_len, void *buf) log_offset += buf_size; } err: + spin_unlock_bh(&adapter->mcc_lock); dma_free_coherent(&adapter->pdev->dev, get_fat_cmd.size, get_fat_cmd.va, get_fat_cmd.dma); - mutex_unlock(&adapter->mcc_lock); return status; }

@@ -1861,7 +1861,7 @@ int be_cmd_get_fw_ver(struct be_adapter *adapter) struct be_cmd_req_get_fw_version *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1884,7 +1884,7 @@ int be_cmd_get_fw_ver(struct be_adapter *adapter) sizeof(adapter->fw_on_flash)); } err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1898,7 +1898,7 @@ static int __be_cmd_modify_eqd(struct be_adapter *adapter, struct be_cmd_req_modify_eq_delay *req; int status = 0, i;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1921,7 +1921,7 @@ static int __be_cmd_modify_eqd(struct be_adapter *adapter,

status = be_mcc_notify(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1948,7 +1948,7 @@ int be_cmd_vlan_config(struct be_adapter *adapter, u32 if_id, u16 *vtag_array, struct be_cmd_req_vlan_config *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -1970,7 +1970,7 @@ int be_cmd_vlan_config(struct be_adapter *adapter, u32 if_id, u16 *vtag_array,

status = be_mcc_notify_wait(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -1981,7 +1981,7 @@ static int __be_cmd_rx_filter(struct be_adapter *adapter, u32 flags, u32 value) struct be_cmd_req_rx_filter *req = mem->va; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -2014,7 +2014,7 @@ static int __be_cmd_rx_filter(struct be_adapter *adapter, u32 flags, u32 value)

status = be_mcc_notify_wait(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -2045,7 +2045,7 @@ int be_cmd_set_flow_control(struct be_adapter *adapter, u32 tx_fc, u32 rx_fc) CMD_SUBSYSTEM_COMMON)) return -EPERM;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -2065,7 +2065,7 @@ int be_cmd_set_flow_control(struct be_adapter *adapter, u32 tx_fc, u32 rx_fc) status = be_mcc_notify_wait(adapter);

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock);

if (base_status(status) == MCC_STATUS_FEATURE_NOT_SUPPORTED) return -EOPNOTSUPP; @@ -2084,7 +2084,7 @@ int be_cmd_get_flow_control(struct be_adapter *adapter, u32 *tx_fc, u32 *rx_fc) CMD_SUBSYSTEM_COMMON)) return -EPERM;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -2107,7 +2107,7 @@ int be_cmd_get_flow_control(struct be_adapter *adapter, u32 *tx_fc, u32 *rx_fc) }

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -2188,7 +2188,7 @@ int be_cmd_rss_config(struct be_adapter *adapter, u8 *rsstable, if (!(be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS)) return 0;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -2213,7 +2213,7 @@ int be_cmd_rss_config(struct be_adapter *adapter, u8 *rsstable,

status = be_mcc_notify_wait(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -2225,7 +2225,7 @@ int be_cmd_set_beacon_state(struct be_adapter *adapter, u8 port_num, struct be_cmd_req_enable_disable_beacon *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -2246,7 +2246,7 @@ int be_cmd_set_beacon_state(struct be_adapter *adapter, u8 port_num, status = be_mcc_notify_wait(adapter);

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -2257,7 +2257,7 @@ int be_cmd_get_beacon_state(struct be_adapter *adapter, u8 port_num, u32 *state) struct be_cmd_req_get_beacon_state *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -2281,7 +2281,7 @@ int be_cmd_get_beacon_state(struct be_adapter *adapter, u8 port_num, u32 *state) }

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -2305,7 +2305,7 @@ int be_cmd_read_port_transceiver_data(struct be_adapter *adapter, return -ENOMEM; }

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -2327,7 +2327,7 @@ int be_cmd_read_port_transceiver_data(struct be_adapter *adapter, memcpy(data, resp->page_data + off, len); } err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); dma_free_coherent(&adapter->pdev->dev, cmd.size, cmd.va, cmd.dma); return status; } @@ -2344,7 +2344,7 @@ static int lancer_cmd_write_object(struct be_adapter *adapter, void *ctxt = NULL; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock); adapter->flash_status = 0;

wrb = wrb_from_mccq(adapter); @@ -2386,7 +2386,7 @@ static int lancer_cmd_write_object(struct be_adapter *adapter, if (status) goto err_unlock;

- mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock);

if (!wait_for_completion_timeout(&adapter->et_cmd_compl, msecs_to_jiffies(60000))) @@ -2405,7 +2405,7 @@ static int lancer_cmd_write_object(struct be_adapter *adapter, return status;

err_unlock: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -2459,7 +2459,7 @@ static int lancer_cmd_delete_object(struct be_adapter *adapter, struct be_mcc_wrb *wrb; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -2477,7 +2477,7 @@ static int lancer_cmd_delete_object(struct be_adapter *adapter,

status = be_mcc_notify_wait(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -2490,7 +2490,7 @@ int lancer_cmd_read_object(struct be_adapter *adapter, struct be_dma_mem *cmd, struct lancer_cmd_resp_read_object *resp; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -2524,7 +2524,7 @@ int lancer_cmd_read_object(struct be_adapter *adapter, struct be_dma_mem *cmd, }

err_unlock: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -2536,7 +2536,7 @@ static int be_cmd_write_flashrom(struct be_adapter *adapter, struct be_cmd_write_flashrom *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock); adapter->flash_status = 0;

wrb = wrb_from_mccq(adapter); @@ -2561,7 +2561,7 @@ static int be_cmd_write_flashrom(struct be_adapter *adapter, if (status) goto err_unlock;

- mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock);

if (!wait_for_completion_timeout(&adapter->et_cmd_compl, msecs_to_jiffies(40000))) @@ -2572,7 +2572,7 @@ static int be_cmd_write_flashrom(struct be_adapter *adapter, return status;

err_unlock: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -2583,7 +2583,7 @@ static int be_cmd_get_flash_crc(struct be_adapter *adapter, u8 *flashed_crc, struct be_mcc_wrb *wrb; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -2610,7 +2610,7 @@ static int be_cmd_get_flash_crc(struct be_adapter *adapter, u8 *flashed_crc, memcpy(flashed_crc, req->crc, 4);

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3216,7 +3216,7 @@ int be_cmd_enable_magic_wol(struct be_adapter *adapter, u8 *mac, struct be_cmd_req_acpi_wol_magic_config *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3233,7 +3233,7 @@ int be_cmd_enable_magic_wol(struct be_adapter *adapter, u8 *mac, status = be_mcc_notify_wait(adapter);

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3248,7 +3248,7 @@ int be_cmd_set_loopback(struct be_adapter *adapter, u8 port_num, CMD_SUBSYSTEM_LOWLEVEL)) return -EPERM;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3271,7 +3271,7 @@ int be_cmd_set_loopback(struct be_adapter *adapter, u8 port_num, if (status) goto err_unlock;

- mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock);

if (!wait_for_completion_timeout(&adapter->et_cmd_compl, msecs_to_jiffies(SET_LB_MODE_TIMEOUT))) @@ -3280,7 +3280,7 @@ int be_cmd_set_loopback(struct be_adapter *adapter, u8 port_num, return status;

err_unlock: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3297,7 +3297,7 @@ int be_cmd_loopback_test(struct be_adapter *adapter, u32 port_num, CMD_SUBSYSTEM_LOWLEVEL)) return -EPERM;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3323,7 +3323,7 @@ int be_cmd_loopback_test(struct be_adapter *adapter, u32 port_num, if (status) goto err;

- mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock);

wait_for_completion(&adapter->et_cmd_compl); resp = embedded_payload(wrb); @@ -3331,7 +3331,7 @@ int be_cmd_loopback_test(struct be_adapter *adapter, u32 port_num,

return status; err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3347,7 +3347,7 @@ int be_cmd_ddr_dma_test(struct be_adapter *adapter, u64 pattern, CMD_SUBSYSTEM_LOWLEVEL)) return -EPERM;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3381,7 +3381,7 @@ int be_cmd_ddr_dma_test(struct be_adapter *adapter, u64 pattern, }

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3392,7 +3392,7 @@ int be_cmd_get_seeprom_data(struct be_adapter *adapter, struct be_cmd_req_seeprom_read *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3408,7 +3408,7 @@ int be_cmd_get_seeprom_data(struct be_adapter *adapter, status = be_mcc_notify_wait(adapter);

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3423,7 +3423,7 @@ int be_cmd_get_phy_info(struct be_adapter *adapter) CMD_SUBSYSTEM_COMMON)) return -EPERM;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3468,7 +3468,7 @@ int be_cmd_get_phy_info(struct be_adapter *adapter) } dma_free_coherent(&adapter->pdev->dev, cmd.size, cmd.va, cmd.dma); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3478,7 +3478,7 @@ static int be_cmd_set_qos(struct be_adapter *adapter, u32 bps, u32 domain) struct be_cmd_req_set_qos *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3498,7 +3498,7 @@ static int be_cmd_set_qos(struct be_adapter *adapter, u32 bps, u32 domain) status = be_mcc_notify_wait(adapter);

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3610,7 +3610,7 @@ int be_cmd_get_fn_privileges(struct be_adapter *adapter, u32 *privilege, struct be_cmd_req_get_fn_privileges *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3642,7 +3642,7 @@ int be_cmd_get_fn_privileges(struct be_adapter *adapter, u32 *privilege, }

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3654,7 +3654,7 @@ int be_cmd_set_fn_privileges(struct be_adapter *adapter, u32 privileges, struct be_cmd_req_set_fn_privileges *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3674,7 +3674,7 @@ int be_cmd_set_fn_privileges(struct be_adapter *adapter, u32 privileges,

status = be_mcc_notify_wait(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3706,7 +3706,7 @@ int be_cmd_get_mac_from_list(struct be_adapter *adapter, u8 *mac, return -ENOMEM; }

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3770,7 +3770,7 @@ int be_cmd_get_mac_from_list(struct be_adapter *adapter, u8 *mac, }

out: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); dma_free_coherent(&adapter->pdev->dev, get_mac_list_cmd.size, get_mac_list_cmd.va, get_mac_list_cmd.dma); return status; @@ -3830,7 +3830,7 @@ int be_cmd_set_mac_list(struct be_adapter *adapter, u8 *mac_array, if (!cmd.va) return -ENOMEM;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3852,7 +3852,7 @@ int be_cmd_set_mac_list(struct be_adapter *adapter, u8 *mac_array,

err: dma_free_coherent(&adapter->pdev->dev, cmd.size, cmd.va, cmd.dma); - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3888,7 +3888,7 @@ int be_cmd_set_hsw_config(struct be_adapter *adapter, u16 pvid, CMD_SUBSYSTEM_COMMON)) return -EPERM;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3929,7 +3929,7 @@ int be_cmd_set_hsw_config(struct be_adapter *adapter, u16 pvid, status = be_mcc_notify_wait(adapter);

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -3943,7 +3943,7 @@ int be_cmd_get_hsw_config(struct be_adapter *adapter, u16 *pvid, int status; u16 vid;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -3990,7 +3990,7 @@ int be_cmd_get_hsw_config(struct be_adapter *adapter, u16 *pvid, }

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -4189,7 +4189,7 @@ int be_cmd_set_ext_fat_capabilites(struct be_adapter *adapter, struct be_cmd_req_set_ext_fat_caps *req; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -4205,7 +4205,7 @@ int be_cmd_set_ext_fat_capabilites(struct be_adapter *adapter,

status = be_mcc_notify_wait(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -4683,7 +4683,7 @@ int be_cmd_manage_iface(struct be_adapter *adapter, u32 iface, u8 op) if (iface == 0xFFFFFFFF) return -1;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -4700,7 +4700,7 @@ int be_cmd_manage_iface(struct be_adapter *adapter, u32 iface, u8 op)

status = be_mcc_notify_wait(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -4734,7 +4734,7 @@ int be_cmd_get_if_id(struct be_adapter *adapter, struct be_vf_cfg *vf_cfg, struct be_cmd_resp_get_iface_list *resp; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -4755,7 +4755,7 @@ int be_cmd_get_if_id(struct be_adapter *adapter, struct be_vf_cfg *vf_cfg, }

err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -4849,7 +4849,7 @@ int be_cmd_enable_vf(struct be_adapter *adapter, u8 domain) if (BEx_chip(adapter)) return 0;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -4867,7 +4867,7 @@ int be_cmd_enable_vf(struct be_adapter *adapter, u8 domain) req->enable = 1; status = be_mcc_notify_wait(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -4940,7 +4940,7 @@ __be_cmd_set_logical_link_config(struct be_adapter *adapter, u32 link_config = 0; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -4968,7 +4968,7 @@ __be_cmd_set_logical_link_config(struct be_adapter *adapter,

status = be_mcc_notify_wait(adapter); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -4999,8 +4999,7 @@ int be_cmd_set_features(struct be_adapter *adapter) struct be_mcc_wrb *wrb; int status;

- if (mutex_lock_interruptible(&adapter->mcc_lock)) - return -1; + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -5038,7 +5037,7 @@ int be_cmd_set_features(struct be_adapter *adapter) dev_info(&adapter->pdev->dev, "Adapter does not support HW error recovery\n");

- mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; }

@@ -5052,7 +5051,7 @@ int be_roce_mcc_cmd(void *netdev_handle, void *wrb_payload, struct be_cmd_resp_hdr *resp; int status;

- mutex_lock(&adapter->mcc_lock); + spin_lock_bh(&adapter->mcc_lock);

wrb = wrb_from_mccq(adapter); if (!wrb) { @@ -5075,7 +5074,7 @@ int be_roce_mcc_cmd(void *netdev_handle, void *wrb_payload, memcpy(wrb_payload, resp, sizeof(*resp) + resp->response_length); be_dws_le_to_cpu(wrb_payload, sizeof(*resp) + resp->response_length); err: - mutex_unlock(&adapter->mcc_lock); + spin_unlock_bh(&adapter->mcc_lock); return status; } EXPORT_SYMBOL(be_roce_mcc_cmd); diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 13d5fe324d6c7..c61dc7d05bcb4 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -5673,8 +5673,8 @@ static int be_drv_init(struct be_adapter *adapter) }

mutex_init(&adapter->mbox_lock); - mutex_init(&adapter->mcc_lock); mutex_init(&adapter->rx_filter_lock); + spin_lock_init(&adapter->mcc_lock); spin_lock_init(&adapter->mcc_cq_lock); init_completion(&adapter->et_cmd_compl);