diff mbox

[05/10] vfio: ccw: Suppress unused event parameter

Message ID 1524149293-12658-6-git-send-email-pmorel@linux.vnet.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Pierre Morel April 19, 2018, 2:48 p.m. UTC 
The fsm_func_t function type definition does not need the event
parameter since all functions are in a state/event table.

Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
---
 drivers/s390/cio/vfio_ccw_fsm.c     | 34 +++++++++++-----------------------
 drivers/s390/cio/vfio_ccw_private.h |  5 ++---
 2 files changed, 13 insertions(+), 26 deletions(-)

Comments

Pierre Morel May 3, 2018, 10:34 a.m. UTC | #1 
On 26/04/2018 09:36, Dong Jia Shi wrote:
> * Pierre Morel <pmorel@linux.vnet.ibm.com> [2018-04-19 16:48:08 +0200]:
>
>> The fsm_func_t function type definition does not need the event
>> parameter since all functions are in a state/event table.
> Not sure if this will still be right after you addressed all of the
> comments on this version. But no hurt to point out some nits that I
> noticed below.
>
>> Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
>> ---
>>   drivers/s390/cio/vfio_ccw_fsm.c     | 34 +++++++++++-----------------------
>>   drivers/s390/cio/vfio_ccw_private.h |  5 ++---
>>   2 files changed, 13 insertions(+), 26 deletions(-)
>>
>> diff --git a/drivers/s390/cio/vfio_ccw_fsm.c b/drivers/s390/cio/vfio_ccw_fsm.c
>> index f9855cd..f8ded70 100644
>> --- a/drivers/s390/cio/vfio_ccw_fsm.c
>> +++ b/drivers/s390/cio/vfio_ccw_fsm.c
>> @@ -55,8 +55,7 @@ static int fsm_io_helper(struct vfio_ccw_private *private)
>>   	}
>>   }
>>
>> -static int fsm_notoper(struct vfio_ccw_private *private,
>> -			enum vfio_ccw_event event)
>> +static int fsm_notoper(struct vfio_ccw_private *private)
>>   {
>>   	struct subchannel *sch = private->sch;
>>
>> @@ -65,36 +64,31 @@ static int fsm_notoper(struct vfio_ccw_private *private,
>>   	 * Probably we should send the machine check to the guest.
>>   	 */
>>   	css_sched_sch_todo(sch, SCH_TODO_UNREG);
>> -	private->state = VFIO_CCW_STATE_NOT_OPER;
>> -	return private->state;
>> +	return VFIO_CCW_STATE_NOT_OPER;
> This change should belong to a former patch.
>
> [...]
>
>> @@ -109,17 +103,14 @@ static int fsm_disabled_irq(struct vfio_ccw_private *private,
>>   /*
>>    * Deal with the ccw command request from the userspace.
>>    */
>> -static int fsm_io_request(struct vfio_ccw_private *private,
>> -			   enum vfio_ccw_event event)
>> +static int fsm_io_request(struct vfio_ccw_private *private)
>>   {
>> -	union orb *orb;
>>   	struct ccw_io_region *io_region = &private->io_region;
>> +	union orb *orb = (union orb *)io_region->orb_area;
>>   	struct mdev_device *mdev = private->mdev;
>>
>>   	private->state = VFIO_CCW_STATE_BOXED;
>>
>> -	orb = (union orb *)io_region->orb_area;
>> -
> Irrelevant change for this patch.
>
>>   	io_region->ret_code = cp_init(&private->cp, mdev_dev(mdev), orb);
>>   	if (io_region->ret_code)
>>   		goto err_out;
>> @@ -139,15 +130,13 @@ static int fsm_io_request(struct vfio_ccw_private *private,
>>   	return VFIO_CCW_STATE_BUSY;
>>
>>   err_out:
>> -	private->state = VFIO_CCW_STATE_IDLE;
>> -	return private->state;
>> +	return VFIO_CCW_STATE_IDLE;
> Should move to other patch.
>
> [...]
>
OK, I will move these changes in patch 4/10.
diff mbox

Patch

diff --git a/drivers/s390/cio/vfio_ccw_fsm.c b/drivers/s390/cio/vfio_ccw_fsm.c
index f9855cd..f8ded70 100644
--- a/drivers/s390/cio/vfio_ccw_fsm.c
+++ b/drivers/s390/cio/vfio_ccw_fsm.c
@@ -55,8 +55,7 @@  static int fsm_io_helper(struct vfio_ccw_private *private)
 	}
 }
 
-static int fsm_notoper(struct vfio_ccw_private *private,
-			enum vfio_ccw_event event)
+static int fsm_notoper(struct vfio_ccw_private *private)
 {
 	struct subchannel *sch = private->sch;
 
@@ -65,36 +64,31 @@  static int fsm_notoper(struct vfio_ccw_private *private,
 	 * Probably we should send the machine check to the guest.
 	 */
 	css_sched_sch_todo(sch, SCH_TODO_UNREG);
-	private->state = VFIO_CCW_STATE_NOT_OPER;
-	return private->state;
+	return VFIO_CCW_STATE_NOT_OPER;
 }
 
 /*
  * No operation action.
  */
-static int fsm_nop(struct vfio_ccw_private *private,
-		    enum vfio_ccw_event event)
+static int fsm_nop(struct vfio_ccw_private *private)
 {
 	return private->state;
 }
 
-static int fsm_io_error(struct vfio_ccw_private *private,
-			 enum vfio_ccw_event event)
+static int fsm_io_error(struct vfio_ccw_private *private)
 {
 	pr_err("vfio-ccw: FSM: I/O request from state:%d\n", private->state);
 	private->io_region.ret_code = -EIO;
 	return private->state;
 }
 
-static int fsm_io_busy(struct vfio_ccw_private *private,
-			enum vfio_ccw_event event)
+static int fsm_io_busy(struct vfio_ccw_private *private)
 {
 	private->io_region.ret_code = -EBUSY;
 	return private->state;
 }
 
-static int fsm_disabled_irq(struct vfio_ccw_private *private,
-			     enum vfio_ccw_event event)
+static int fsm_disabled_irq(struct vfio_ccw_private *private)
 {
 	struct subchannel *sch = private->sch;
 
@@ -109,17 +103,14 @@  static int fsm_disabled_irq(struct vfio_ccw_private *private,
 /*
  * Deal with the ccw command request from the userspace.
  */
-static int fsm_io_request(struct vfio_ccw_private *private,
-			   enum vfio_ccw_event event)
+static int fsm_io_request(struct vfio_ccw_private *private)
 {
-	union orb *orb;
 	struct ccw_io_region *io_region = &private->io_region;
+	union orb *orb = (union orb *)io_region->orb_area;
 	struct mdev_device *mdev = private->mdev;
 
 	private->state = VFIO_CCW_STATE_BOXED;
 
-	orb = (union orb *)io_region->orb_area;
-
 	io_region->ret_code = cp_init(&private->cp, mdev_dev(mdev), orb);
 	if (io_region->ret_code)
 		goto err_out;
@@ -139,15 +130,13 @@  static int fsm_io_request(struct vfio_ccw_private *private,
 	return VFIO_CCW_STATE_BUSY;
 
 err_out:
-	private->state = VFIO_CCW_STATE_IDLE;
-	return private->state;
+	return VFIO_CCW_STATE_IDLE;
 }
 
 /*
  * Got an interrupt for a normal io (state busy).
  */
-static int fsm_irq(struct vfio_ccw_private *private,
-		    enum vfio_ccw_event event)
+static int fsm_irq(struct vfio_ccw_private *private)
 {
 	struct irb *irb = &private->irb;
 
@@ -166,8 +155,7 @@  static int fsm_irq(struct vfio_ccw_private *private,
 /*
  * Got a sub-channel event .
  */
-static int fsm_sch_event(struct vfio_ccw_private *private,
-			 enum vfio_ccw_event event)
+static int fsm_sch_event(struct vfio_ccw_private *private)
 {
 	unsigned long flags;
 	int ret = private->state;
diff --git a/drivers/s390/cio/vfio_ccw_private.h b/drivers/s390/cio/vfio_ccw_private.h
index 93aab87..823e46c 100644
--- a/drivers/s390/cio/vfio_ccw_private.h
+++ b/drivers/s390/cio/vfio_ccw_private.h
@@ -86,14 +86,13 @@  enum vfio_ccw_event {
 /*
  * Action called through jumptable.
  */
-typedef int (fsm_func_t)(struct vfio_ccw_private *, enum vfio_ccw_event);
+typedef int (fsm_func_t)(struct vfio_ccw_private *);
 extern fsm_func_t *vfio_ccw_jumptable[NR_VFIO_CCW_STATES][NR_VFIO_CCW_EVENTS];
 
 static inline void vfio_ccw_fsm_event(struct vfio_ccw_private *private,
 				     int event)
 {
-	private->state = vfio_ccw_jumptable[private->state][event](private,
-								   event);
+	private->state = vfio_ccw_jumptable[private->state][event](private);
 }
 
 extern struct workqueue_struct *vfio_ccw_work_q;