diff options
Diffstat (limited to 'drivers/scsi/bnx2fc/bnx2fc_io.c')
-rw-r--r-- | drivers/scsi/bnx2fc/bnx2fc_io.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index 0679782d9d15..5b99844ef6bf 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_io.c +++ b/drivers/scsi/bnx2fc/bnx2fc_io.c | |||
@@ -1894,18 +1894,24 @@ int bnx2fc_queuecommand(struct Scsi_Host *host, | |||
1894 | goto exit_qcmd; | 1894 | goto exit_qcmd; |
1895 | } | 1895 | } |
1896 | } | 1896 | } |
1897 | |||
1898 | spin_lock_bh(&tgt->tgt_lock); | ||
1899 | |||
1897 | io_req = bnx2fc_cmd_alloc(tgt); | 1900 | io_req = bnx2fc_cmd_alloc(tgt); |
1898 | if (!io_req) { | 1901 | if (!io_req) { |
1899 | rc = SCSI_MLQUEUE_HOST_BUSY; | 1902 | rc = SCSI_MLQUEUE_HOST_BUSY; |
1900 | goto exit_qcmd; | 1903 | goto exit_qcmd_tgtlock; |
1901 | } | 1904 | } |
1902 | io_req->sc_cmd = sc_cmd; | 1905 | io_req->sc_cmd = sc_cmd; |
1903 | 1906 | ||
1904 | if (bnx2fc_post_io_req(tgt, io_req)) { | 1907 | if (bnx2fc_post_io_req(tgt, io_req)) { |
1905 | printk(KERN_ERR PFX "Unable to post io_req\n"); | 1908 | printk(KERN_ERR PFX "Unable to post io_req\n"); |
1906 | rc = SCSI_MLQUEUE_HOST_BUSY; | 1909 | rc = SCSI_MLQUEUE_HOST_BUSY; |
1907 | goto exit_qcmd; | 1910 | goto exit_qcmd_tgtlock; |
1908 | } | 1911 | } |
1912 | |||
1913 | exit_qcmd_tgtlock: | ||
1914 | spin_unlock_bh(&tgt->tgt_lock); | ||
1909 | exit_qcmd: | 1915 | exit_qcmd: |
1910 | return rc; | 1916 | return rc; |
1911 | } | 1917 | } |
@@ -2020,6 +2026,8 @@ int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, | |||
2020 | int task_idx, index; | 2026 | int task_idx, index; |
2021 | u16 xid; | 2027 | u16 xid; |
2022 | 2028 | ||
2029 | /* bnx2fc_post_io_req() is called with the tgt_lock held */ | ||
2030 | |||
2023 | /* Initialize rest of io_req fields */ | 2031 | /* Initialize rest of io_req fields */ |
2024 | io_req->cmd_type = BNX2FC_SCSI_CMD; | 2032 | io_req->cmd_type = BNX2FC_SCSI_CMD; |
2025 | io_req->port = port; | 2033 | io_req->port = port; |
@@ -2047,9 +2055,7 @@ int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, | |||
2047 | /* Build buffer descriptor list for firmware from sg list */ | 2055 | /* Build buffer descriptor list for firmware from sg list */ |
2048 | if (bnx2fc_build_bd_list_from_sg(io_req)) { | 2056 | if (bnx2fc_build_bd_list_from_sg(io_req)) { |
2049 | printk(KERN_ERR PFX "BD list creation failed\n"); | 2057 | printk(KERN_ERR PFX "BD list creation failed\n"); |
2050 | spin_lock_bh(&tgt->tgt_lock); | ||
2051 | kref_put(&io_req->refcount, bnx2fc_cmd_release); | 2058 | kref_put(&io_req->refcount, bnx2fc_cmd_release); |
2052 | spin_unlock_bh(&tgt->tgt_lock); | ||
2053 | return -EAGAIN; | 2059 | return -EAGAIN; |
2054 | } | 2060 | } |
2055 | 2061 | ||
@@ -2061,19 +2067,15 @@ int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, | |||
2061 | task = &(task_page[index]); | 2067 | task = &(task_page[index]); |
2062 | bnx2fc_init_task(io_req, task); | 2068 | bnx2fc_init_task(io_req, task); |
2063 | 2069 | ||
2064 | spin_lock_bh(&tgt->tgt_lock); | ||
2065 | |||
2066 | if (tgt->flush_in_prog) { | 2070 | if (tgt->flush_in_prog) { |
2067 | printk(KERN_ERR PFX "Flush in progress..Host Busy\n"); | 2071 | printk(KERN_ERR PFX "Flush in progress..Host Busy\n"); |
2068 | kref_put(&io_req->refcount, bnx2fc_cmd_release); | 2072 | kref_put(&io_req->refcount, bnx2fc_cmd_release); |
2069 | spin_unlock_bh(&tgt->tgt_lock); | ||
2070 | return -EAGAIN; | 2073 | return -EAGAIN; |
2071 | } | 2074 | } |
2072 | 2075 | ||
2073 | if (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) { | 2076 | if (!test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags)) { |
2074 | printk(KERN_ERR PFX "Session not ready...post_io\n"); | 2077 | printk(KERN_ERR PFX "Session not ready...post_io\n"); |
2075 | kref_put(&io_req->refcount, bnx2fc_cmd_release); | 2078 | kref_put(&io_req->refcount, bnx2fc_cmd_release); |
2076 | spin_unlock_bh(&tgt->tgt_lock); | ||
2077 | return -EAGAIN; | 2079 | return -EAGAIN; |
2078 | } | 2080 | } |
2079 | 2081 | ||
@@ -2091,6 +2093,5 @@ int bnx2fc_post_io_req(struct bnx2fc_rport *tgt, | |||
2091 | 2093 | ||
2092 | /* Ring doorbell */ | 2094 | /* Ring doorbell */ |
2093 | bnx2fc_ring_doorbell(tgt); | 2095 | bnx2fc_ring_doorbell(tgt); |
2094 | spin_unlock_bh(&tgt->tgt_lock); | ||
2095 | return 0; | 2096 | return 0; |
2096 | } | 2097 | } |