[PATCH 11/28] scsi: drop bus reset for wd33c93-compatible boards

Hannes Reinecke
2017-06-28T08:31:18Z

The bus reset function is just a wrapper calling host reset
under the host lock. So move taking of the host lock into
the host reset function and drop bus reset.

Signed-off-by: Hannes Reinecke <hare@suse.com>
---
drivers/scsi/a2091.c | 17 -----------------
drivers/scsi/a3000.c | 17 -----------------
drivers/scsi/gvp11.c | 18 ------------------
drivers/scsi/mvme147.c | 16 ----------------
drivers/scsi/sgiwd93.c | 15 ---------------
drivers/scsi/wd33c93.c | 2 ++
6 files changed, 2 insertions(+), 83 deletions(-)

diff --git a/drivers/scsi/a2091.c b/drivers/scsi/a2091.c
index 9176bfb..61aadc7 100644
--- a/drivers/scsi/a2091.c
+++ b/drivers/scsi/a2091.c
@@ -147,22 +147,6 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
}
}

-static int a2091_bus_reset(struct scsi_cmnd *cmd)
-{
- struct Scsi_Host *instance = cmd->device->host;
-
- /* FIXME perform bus-specific reset */
-
- /* FIXME 2: kill this function, and let midlayer fall back
- to the same action, calling wd33c93_host_reset() */
-
- spin_lock_irq(instance->host_lock);
- wd33c93_host_reset(cmd);
- spin_unlock_irq(instance->host_lock);
-
- return SUCCESS;
-}
-
static struct scsi_host_template a2091_scsi_template = {
.module = THIS_MODULE,
.name = "Commodore A2091/A590 SCSI",
@@ -171,7 +155,6 @@ static int a2091_bus_reset(struct scsi_cmnd *cmd)
.proc_name = "A2901",
.queuecommand = wd33c93_queuecommand,
.eh_abort_handler = wd33c93_abort,
- .eh_bus_reset_handler = a2091_bus_reset,
.eh_host_reset_handler = wd33c93_host_reset,
.can_queue = CAN_QUEUE,
.this_id = 7,
diff --git a/drivers/scsi/a3000.c b/drivers/scsi/a3000.c
index e6375b4..2427a85 100644
--- a/drivers/scsi/a3000.c
+++ b/drivers/scsi/a3000.c
@@ -162,22 +162,6 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
}
}

-static int a3000_bus_reset(struct scsi_cmnd *cmd)
-{
- struct Scsi_Host *instance = cmd->device->host;
-
- /* FIXME perform bus-specific reset */
-
- /* FIXME 2: kill this entire function, which should
- cause mid-layer to call wd33c93_host_reset anyway? */
-
- spin_lock_irq(instance->host_lock);
- wd33c93_host_reset(cmd);
- spin_unlock_irq(instance->host_lock);
-
- return SUCCESS;
-}
-
static struct scsi_host_template amiga_a3000_scsi_template = {
.module = THIS_MODULE,
.name = "Amiga 3000 built-in SCSI",
@@ -186,7 +170,6 @@ static int a3000_bus_reset(struct scsi_cmnd *cmd)
.proc_name = "A3000",
.queuecommand = wd33c93_queuecommand,
.eh_abort_handler = wd33c93_abort,
- .eh_bus_reset_handler = a3000_bus_reset,
.eh_host_reset_handler = wd33c93_host_reset,
.can_queue = CAN_QUEUE,
.this_id = 7,
diff --git a/drivers/scsi/gvp11.c b/drivers/scsi/gvp11.c
index 3b6f83f..a27fc49 100644
--- a/drivers/scsi/gvp11.c
+++ b/drivers/scsi/gvp11.c
@@ -171,23 +171,6 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
}
}

-static int gvp11_bus_reset(struct scsi_cmnd *cmd)
-{
- struct Scsi_Host *instance = cmd->device->host;
-
- /* FIXME perform bus-specific reset */
-
- /* FIXME 2: shouldn't we no-op this function (return
- FAILED), and fall back to host reset function,
- wd33c93_host_reset ? */
-
- spin_lock_irq(instance->host_lock);
- wd33c93_host_reset(cmd);
- spin_unlock_irq(instance->host_lock);
-
- return SUCCESS;
-}
-
static struct scsi_host_template gvp11_scsi_template = {
.module = THIS_MODULE,
.name = "GVP Series II SCSI",
@@ -196,7 +179,6 @@ static int gvp11_bus_reset(struct scsi_cmnd *cmd)
.proc_name = "GVP11",
.queuecommand = wd33c93_queuecommand,
.eh_abort_handler = wd33c93_abort,
- .eh_bus_reset_handler = gvp11_bus_reset,
.eh_host_reset_handler = wd33c93_host_reset,
.can_queue = CAN_QUEUE,
.this_id = 7,
diff --git a/drivers/scsi/mvme147.c b/drivers/scsi/mvme147.c
index e7f6661..4f51570 100644
--- a/drivers/scsi/mvme147.c
+++ b/drivers/scsi/mvme147.c
@@ -121,21 +121,6 @@ int mvme147_detect(struct scsi_host_template *tpnt)
return 0;
}

-static int mvme147_bus_reset(struct scsi_cmnd *cmd)
-{
- /* FIXME perform bus-specific reset */
-
- /* FIXME 2: kill this function, and let midlayer fallback to
- the same result, calling wd33c93_host_reset() */
-
- spin_lock_irq(cmd->device->host->host_lock);
- wd33c93_host_reset(cmd);
- spin_unlock_irq(cmd->device->host->host_lock);
-
- return SUCCESS;
-}
-
-
static struct scsi_host_template driver_template = {
.proc_name = "MVME147",
.name = "MVME147 built-in SCSI",
@@ -143,7 +128,6 @@ static int mvme147_bus_reset(struct scsi_cmnd *cmd)
.release = mvme147_release,
.queuecommand = wd33c93_queuecommand,
.eh_abort_handler = wd33c93_abort,
- .eh_bus_reset_handler = mvme147_bus_reset,
.eh_host_reset_handler = wd33c93_host_reset,
.can_queue = CAN_QUEUE,
.this_id = 7,
diff --git a/drivers/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c
index 80cfa93..5ed696d 100644
--- a/drivers/scsi/sgiwd93.c
+++ b/drivers/scsi/sgiwd93.c
@@ -192,20 +192,6 @@ static inline void init_hpc_chain(struct ip22_hostdata *hdata)
hcp->desc.pnext = hdata->dma;
}

-static int sgiwd93_bus_reset(struct scsi_cmnd *cmd)
-{
- /* FIXME perform bus-specific reset */
-
- /* FIXME 2: kill this function, and let midlayer fallback
- to the same result, calling wd33c93_host_reset() */
-
- spin_lock_irq(cmd->device->host->host_lock);
- wd33c93_host_reset(cmd);
- spin_unlock_irq(cmd->device->host->host_lock);
-
- return SUCCESS;
-}
-
/*
* Kludge alert - the SCSI code calls the abort and reset method with int
* arguments not with pointers. So this is going to blow up beautyfully
@@ -217,7 +203,6 @@ static int sgiwd93_bus_reset(struct scsi_cmnd *cmd)
.name = "SGI WD93",
.queuecommand = wd33c93_queuecommand,
.eh_abort_handler = wd33c93_abort,
- .eh_bus_reset_handler = sgiwd93_bus_reset,
.eh_host_reset_handler = wd33c93_host_reset,
.can_queue = 16,
.this_id = 7,
diff --git a/drivers/scsi/wd33c93.c b/drivers/scsi/wd33c93.c
index 9e09da4..74be04f 100644
--- a/drivers/scsi/wd33c93.c
+++ b/drivers/scsi/wd33c93.c
@@ -1578,6 +1578,7 @@
int i;

instance = SCpnt->device->host;
+ spin_lock_irq(instance->host_lock);
hostdata = (struct WD33C93_hostdata *) instance->hostdata;

printk("scsi%d: reset. ", instance->host_no);
@@ -1603,6 +1604,7 @@
reset_wd33c93(instance);
SCpnt->result = DID_RESET << 16;
enable_irq(instance->irq);
+ spin_unlock_irq(instance->host_lock);
return SUCCESS;
}

--
1.8.5.6