[PATCH 6.12 179/269] be2net: fix sleeping while atomic bugs in be_ndo_bridge_getlink

6.12-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 e48b861e4ce15..270ff9aab3352 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -562,7 +562,7 @@ 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 61adcebeef010..51b8377edd1d0 100644 --- a/drivers/net/ethernet/emulex/benet/be_cmds.c +++ b/drivers/net/ethernet/emulex/benet/be_cmds.c @@ -575,7 +575,7 @@ 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;

@@ -589,7 +589,7 @@ 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"); @@ -866,7 +866,7 @@ 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); @@ -877,7 +877,7 @@ 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); } @@ -1047,7 +1047,7 @@ 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) { @@ -1076,7 +1076,7 @@ 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; }

@@ -1088,7 +1088,7 @@ 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) { @@ -1113,7 +1113,7 @@ 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; @@ -1131,7 +1131,7 @@ 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) { @@ -1151,7 +1151,7 @@ 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; }

@@ -1414,7 +1414,7 @@ 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) { @@ -1444,7 +1444,7 @@ int be_cmd_rxq_create(struct be_adapter *adapter, }

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

@@ -1508,7 +1508,7 @@ 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) { @@ -1525,7 +1525,7 @@ 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; }

@@ -1593,7 +1593,7 @@ 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) { @@ -1621,7 +1621,7 @@ 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; }

@@ -1637,7 +1637,7 @@ 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) { @@ -1660,7 +1660,7 @@ 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; }

@@ -1697,7 +1697,7 @@ 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; @@ -1736,7 +1736,7 @@ 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; }

@@ -1747,7 +1747,7 @@ 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) { @@ -1762,7 +1762,7 @@ 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; }

@@ -1811,7 +1811,7 @@ 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); @@ -1849,9 +1849,9 @@ 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; }

@@ -1862,7 +1862,7 @@ 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) { @@ -1885,7 +1885,7 @@ 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; }

@@ -1899,7 +1899,7 @@ 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) { @@ -1922,7 +1922,7 @@ 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; }

@@ -1949,7 +1949,7 @@ 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) { @@ -1971,7 +1971,7 @@ 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; }

@@ -1982,7 +1982,7 @@ 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) { @@ -2015,7 +2015,7 @@ 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; }

@@ -2046,7 +2046,7 @@ 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) { @@ -2066,7 +2066,7 @@ 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; @@ -2085,7 +2085,7 @@ 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) { @@ -2108,7 +2108,7 @@ 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; }

@@ -2189,7 +2189,7 @@ 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) { @@ -2214,7 +2214,7 @@ 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; }

@@ -2226,7 +2226,7 @@ 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) { @@ -2247,7 +2247,7 @@ 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; }

@@ -2258,7 +2258,7 @@ 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) { @@ -2282,7 +2282,7 @@ 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; }

@@ -2306,7 +2306,7 @@ 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) { @@ -2328,7 +2328,7 @@ 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; } @@ -2345,7 +2345,7 @@ 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); @@ -2387,7 +2387,7 @@ 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))) @@ -2406,7 +2406,7 @@ 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; }

@@ -2460,7 +2460,7 @@ 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) { @@ -2478,7 +2478,7 @@ 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; }

@@ -2491,7 +2491,7 @@ 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) { @@ -2525,7 +2525,7 @@ 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; }

@@ -2537,7 +2537,7 @@ 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); @@ -2562,7 +2562,7 @@ 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))) @@ -2573,7 +2573,7 @@ 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; }

@@ -2584,7 +2584,7 @@ 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) { @@ -2611,7 +2611,7 @@ 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; }

@@ -3217,7 +3217,7 @@ 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) { @@ -3234,7 +3234,7 @@ 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; }

@@ -3249,7 +3249,7 @@ 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) { @@ -3272,7 +3272,7 @@ 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))) @@ -3281,7 +3281,7 @@ 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; }

@@ -3298,7 +3298,7 @@ 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) { @@ -3324,7 +3324,7 @@ 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); @@ -3332,7 +3332,7 @@ 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; }

@@ -3348,7 +3348,7 @@ 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) { @@ -3382,7 +3382,7 @@ 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; }

@@ -3393,7 +3393,7 @@ 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) { @@ -3409,7 +3409,7 @@ 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; }

@@ -3424,7 +3424,7 @@ 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) { @@ -3469,7 +3469,7 @@ 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; }

@@ -3479,7 +3479,7 @@ 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) { @@ -3499,7 +3499,7 @@ 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; }

@@ -3611,7 +3611,7 @@ 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) { @@ -3643,7 +3643,7 @@ 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; }

@@ -3655,7 +3655,7 @@ 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) { @@ -3675,7 +3675,7 @@ 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; }

@@ -3707,7 +3707,7 @@ 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) { @@ -3771,7 +3771,7 @@ 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; @@ -3831,7 +3831,7 @@ 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) { @@ -3853,7 +3853,7 @@ 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; }

@@ -3889,7 +3889,7 @@ 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) { @@ -3930,7 +3930,7 @@ 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; }

@@ -3944,7 +3944,7 @@ 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) { @@ -3991,7 +3991,7 @@ 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; }

@@ -4190,7 +4190,7 @@ 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) { @@ -4206,7 +4206,7 @@ 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; }

@@ -4684,7 +4684,7 @@ 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) { @@ -4701,7 +4701,7 @@ 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; }

@@ -4735,7 +4735,7 @@ 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) { @@ -4756,7 +4756,7 @@ 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; }

@@ -4850,7 +4850,7 @@ 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) { @@ -4868,7 +4868,7 @@ 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; }

@@ -4941,7 +4941,7 @@ __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) { @@ -4969,7 +4969,7 @@ __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; }

@@ -5000,8 +5000,7 @@ 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) { @@ -5039,7 +5038,7 @@ 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; }

@@ -5053,7 +5052,7 @@ 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) { @@ -5076,7 +5075,7 @@ 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 875fe379eea21..3d2e215921191 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -5667,8 +5667,8 @@ 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);