[SCSI] mpt2sas: Call init_completion on a per request basis.

Now driver call init_completion on a per request basis.  At some
point the wait_for_completion_timeout is not waiting for the timeout,
instead returning immediately, thus going into diag reset.  This fix will
address all request using the wait_for_completion_timeout API. The previous
implimentation was only calling init_completion at driver
load time.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

3 files changed, 10 insertions, 3 deletions

diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index a9c71769b4ec..f679bff9fc33 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -2614,6 +2614,7 @@ mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
                 ioc->ioc_link_reset_in_progress = 1;
         mpt2sas_base_put_smid_default(ioc, smid);
+        init_completion(&ioc->base_cmds.done);
         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
             msecs_to_jiffies(10000));
         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
@@ -2715,6 +2716,7 @@ mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
         ioc->base_cmds.smid = smid;
         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
         mpt2sas_base_put_smid_default(ioc, smid);
+        init_completion(&ioc->base_cmds.done);
         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
             msecs_to_jiffies(10000));
         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
@@ -2991,6 +2993,7 @@ _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
         mpi_request->VP_ID = 0;
 
         mpt2sas_base_put_smid_default(ioc, smid);
+        init_completion(&ioc->base_cmds.done);
         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
             300*HZ);
         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
@@ -3090,6 +3093,7 @@ _base_event_notification(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
                 mpi_request->EventMasks[i] =
                     le32_to_cpu(ioc->event_masks[i]);
         mpt2sas_base_put_smid_default(ioc, smid);
+        init_completion(&ioc->base_cmds.done);
         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
@@ -3486,7 +3490,6 @@ mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
 
         /* base internal command bits */
         mutex_init(&ioc->base_cmds.mutex);
-        init_completion(&ioc->base_cmds.done);
         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
 
@@ -3494,7 +3497,6 @@ mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
         mutex_init(&ioc->transport_cmds.mutex);
-        init_completion(&ioc->transport_cmds.done);
 
         /* task management internal command bits */
         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
@@ -3510,7 +3512,6 @@ mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
         mutex_init(&ioc->ctl_cmds.mutex);
-        init_completion(&ioc->ctl_cmds.done);
 
         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
                 ioc->event_masks[i] = -1;
diff --git a/drivers/scsi/mpt2sas/mpt2sas_ctl.c b/drivers/scsi/mpt2sas/mpt2sas_ctl.c
index 33463ace0d48..57d724633906 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_ctl.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_ctl.c
@@ -812,6 +812,7 @@ _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc,
                 timeout = MPT2_IOCTL_DEFAULT_TIMEOUT;
         else
                 timeout = karg.timeout;
+        init_completion(&ioc->ctl_cmds.done);
         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
             timeout*HZ);
         if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
@@ -1388,6 +1389,7 @@ _ctl_diag_register(void __user *arg, enum block_state state)
                         cpu_to_le32(ioc->product_specific[buffer_type][i]);
 
         mpt2sas_base_put_smid_default(ioc, smid);
+        init_completion(&ioc->ctl_cmds.done);
         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
             MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
 
@@ -1654,6 +1656,7 @@ _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type, u8 *issue_reset)
         mpi_request->VP_ID = 0;
 
         mpt2sas_base_put_smid_default(ioc, smid);
+        init_completion(&ioc->ctl_cmds.done);
         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
             MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
 
@@ -1915,6 +1918,7 @@ _ctl_diag_read_buffer(void __user *arg, enum block_state state)
         mpi_request->VP_ID = 0;
 
         mpt2sas_base_put_smid_default(ioc, smid);
+        init_completion(&ioc->ctl_cmds.done);
         timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
             MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
 
diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c b/drivers/scsi/mpt2sas/mpt2sas_transport.c
index 8bc57e315ce8..eb98188c7f3f 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_transport.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c
@@ -401,6 +401,7 @@ _transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc,
             "send to sas_addr(0x%016llx)\n", ioc->name,
             (unsigned long long)sas_address));
         mpt2sas_base_put_smid_default(ioc, smid);
+        init_completion(&ioc->transport_cmds.done);
         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
             10*HZ);
 
@@ -1154,6 +1155,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
             "sending smp request\n", ioc->name, __func__));
 
         mpt2sas_base_put_smid_default(ioc, smid);
+        init_completion(&ioc->transport_cmds.done);
         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
             10*HZ);