[PATCH v4 0/6] remove check around pthread_mutex_init()

[Ariel Otilibili <otilibil@eurecom.fr>]

Hello,

This series addresses Bugzilla ID 1586; the man says

> pthread_mutex_init always returns 0. The other mutex functions
> return 0 on success and a non-zero error code on error.

Meaning, the check around around pthread_mutex_init() is needless.

```
$ git grep -Pn '=\s?pthread_mutex_init\('
drivers/common/cnxk/roc_bphy_cgx.c:197: ret = pthread_mutex_init(&roc_cgx->lock, NULL);
drivers/net/bnxt/bnxt_ethdev.c:5826:    err = pthread_mutex_init(&bp->flow_lock, NULL);
drivers/net/bnxt/bnxt_ethdev.c:5832:    err = pthread_mutex_init(&bp->def_cp_lock, NULL);
drivers/net/bnxt/bnxt_ethdev.c:5838:    err = pthread_mutex_init(&bp->health_check_lock, NULL);
drivers/net/bnxt/bnxt_ethdev.c:5844:    err = pthread_mutex_init(&bp->err_recovery_lock, NULL);
drivers/net/bnxt/bnxt_ethdev.c:6773:    rc = pthread_mutex_init(&bp->rep_info->vfr_start_lock, NULL);
drivers/net/bnxt/bnxt_txq.c:201:        rc = pthread_mutex_init(&txq->txq_lock, NULL);
drivers/net/bnxt/tf_ulp/bnxt_ulp.c:218:                 rc = pthread_mutex_init(&session->bnxt_ulp_mutex, NULL);
drivers/net/bnxt/tf_ulp/bnxt_ulp_tf.c:1475:     rc = pthread_mutex_init(&bp->ulp_ctx->cfg_data->flow_db_lock, NULL);
drivers/net/bnxt/tf_ulp/bnxt_ulp_tfc.c:996:     rc = pthread_mutex_init(&bp->ulp_ctx->cfg_data->flow_db_lock, NULL);
drivers/net/bnxt/tf_ulp/ulp_fc_mgr.c:132:       rc = pthread_mutex_init(&ulp_fc_info->fc_lock, NULL);
drivers/net/bnxt/tf_ulp/ulp_ha_mgr.c:415:       rc = pthread_mutex_init(&ha_info->ha_lock, NULL);
drivers/net/failsafe/failsafe.c:150:    ret = pthread_mutex_init(&priv->hotplug_mutex, &attr);
drivers/net/hinic/base/hinic_compat.h:205:      err = pthread_mutex_init(pthreadmutex, mattr);
drivers/raw/ifpga/base/opae_intel_max10.c:1489:         ret = pthread_mutex_init(&dev->bmc_ops.lock, NULL);
drivers/raw/ifpga/base/opae_spi_transaction.c:510:      ret = pthread_mutex_init(&spi_tran_dev->lock, NULL);
lib/vhost/socket.c:501: ret = pthread_mutex_init(&reconn_list.mutex, NULL);
lib/vhost/socket.c:924: ret = pthread_mutex_init(&vsocket->conn_mutex, NULL);
```

Thank you,

Link: https://man7.org/linux/man-pages/man3/pthread_mutex_lock.3.html
Bugzilla ID: 1586
Series-Acked-by: Stephen Hemminger <stephen@networkplumber.org>
---
v4
* addressed feedback, turned returns into tail calls
* reworded the cover letter
v3 (https://inbox.dpdk.org/dev/20250112202021.179634-1-otilibil@eurecom.fr/)
* fix style issues
v2 (https://inbox.dpdk.org/dev/20250112193043.67372-1-otilibil@eurecom.fr/)
* fix build issues
v1 (https://inbox.dpdk.org/dev/20250112185842.9752-1-otilibil@eurecom.fr/#t)

Ariel Otilibili (6):
  raw/ifpga: remove check around pthread_mutex_init()
  net/bnxt: remove check around pthread_mutex_init()
  common/cnxk: remove check around pthread_mutex_init()
  net/failsafe: remove check around pthread_mutex_init()
  net/hinic: remove check around pthread_mutex_init()
  lib/vhost: remove check around pthread_mutex_init()

 drivers/common/cnxk/roc_bphy_cgx.c            |  5 +--
 drivers/net/bnxt/bnxt_ethdev.c                | 40 ++++---------------
 drivers/net/bnxt/bnxt_txq.c                   |  7 +---
 drivers/net/bnxt/tf_ulp/bnxt_ulp.c            |  8 +---
 drivers/net/bnxt/tf_ulp/bnxt_ulp_tf.c         |  6 +--
 drivers/net/bnxt/tf_ulp/bnxt_ulp_tfc.c        |  6 +--
 drivers/net/bnxt/tf_ulp/ulp_fc_mgr.c          |  6 +--
 drivers/net/bnxt/tf_ulp/ulp_ha_mgr.c          |  6 +--
 drivers/net/failsafe/failsafe.c               |  8 +---
 drivers/net/hinic/base/hinic_compat.h         |  8 +---
 drivers/raw/ifpga/base/opae_intel_max10.c     |  5 +--
 drivers/raw/ifpga/base/opae_spi_transaction.c |  7 +---
 lib/vhost/socket.c                            | 14 +------
 13 files changed, 21 insertions(+), 105 deletions(-)

-- 
2.30.2