iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

scsi: aacraid: change event_wait to a completion

Browse Source 
The event_wait semaphore has completion semantics, so we can
change it over to the completion interface for clarity without
changing the behavior.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Arnd Bergmann 2018-12-10 22:32:41 +01:00 committed by Martin K. Petersen
parent dc71eccc17
commit bc127d93e4
6 changed files with 20 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/scsi/aacraid/aacraid.h
View File

@ -40,6 +40,7 @@
#define nblank(x) _nblank(x)[0]
#include <linux/interrupt.h>
#include <linux/completion.h>
#include <linux/pci.h>
#include <scsi/scsi_host.h>
@ -1313,7 +1314,7 @@ struct fib {
* This is the event the sendfib routine will wait on if the
* caller did not pass one and this is synch io.
*/
struct semaphore event_wait;
struct completion event_wait;
spinlock_t event_lock;
u32 done; /* gets set to 1 when fib is complete */

1
drivers/scsi/aacraid/commctrl.c
View File

@ -41,7 +41,6 @@
#include <linux/blkdev.h>
#include <linux/delay.h> /* ssleep prototype */
#include <linux/kthread.h>
#include <linux/semaphore.h>
#include <linux/uaccess.h>
#include <scsi/scsi_host.h>

15
drivers/scsi/aacraid/commsup.c
View File

@ -44,7 +44,6 @@
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/interrupt.h>
#include <linux/semaphore.h>
#include <linux/bcd.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
@ -189,7 +188,7 @@ int aac_fib_setup(struct aac_dev * dev)
fibptr->hw_fib_va = hw_fib;
fibptr->data = (void *) fibptr->hw_fib_va->data;
fibptr->next = fibptr+1; /* Forward chain the fibs */
sema_init(&fibptr->event_wait, 0);
init_completion(&fibptr->event_wait);
spin_lock_init(&fibptr->event_lock);
hw_fib->header.XferState = cpu_to_le32(0xffffffff);
hw_fib->header.SenderSize =
@ -623,7 +622,7 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
}
if (wait) {
fibptr->flags |= FIB_CONTEXT_FLAG_WAIT;
if (down_interruptible(&fibptr->event_wait)) {
if (wait_for_completion_interruptible(&fibptr->event_wait)) {
fibptr->flags &= ~FIB_CONTEXT_FLAG_WAIT;
return -EFAULT;
}
@ -659,7 +658,7 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
* hardware failure has occurred.
*/
unsigned long timeout = jiffies + (180 * HZ); /* 3 minutes */
while (down_trylock(&fibptr->event_wait)) {
while (!try_wait_for_completion(&fibptr->event_wait)) {
int blink;
if (time_is_before_eq_jiffies(timeout)) {
struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue];
@ -689,9 +688,9 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
*/
schedule();
}
} else if (down_interruptible(&fibptr->event_wait)) {
} else if (wait_for_completion_interruptible(&fibptr->event_wait)) {
/* Do nothing ... satisfy
* down_interruptible must_check */
* wait_for_completion_interruptible must_check */
}
spin_lock_irqsave(&fibptr->event_lock, flags);
@ -777,7 +776,7 @@ int aac_hba_send(u8 command, struct fib *fibptr, fib_callback callback,
return -EFAULT;
fibptr->flags |= FIB_CONTEXT_FLAG_WAIT;
if (down_interruptible(&fibptr->event_wait))
if (wait_for_completion_interruptible(&fibptr->event_wait))
fibptr->done = 2;
fibptr->flags &= ~(FIB_CONTEXT_FLAG_WAIT);
@ -1538,7 +1537,7 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
|| fib->flags & FIB_CONTEXT_FLAG_WAIT) {
unsigned long flagv;
spin_lock_irqsave(&fib->event_lock, flagv);
up(&fib->event_wait);
complete(&fib->event_wait);
spin_unlock_irqrestore(&fib->event_lock, flagv);
schedule();
retval = 0;

19
drivers/scsi/aacraid/dpcsup.c
View File

@ -38,7 +38,6 @@
#include <linux/slab.h>
#include <linux/completion.h>
#include <linux/blkdev.h>
#include <linux/semaphore.h>
#include "aacraid.h"
@ -129,7 +128,7 @@ unsigned int aac_response_normal(struct aac_queue * q)
spin_lock_irqsave(&fib->event_lock, flagv);
if (!fib->done) {
fib->done = 1;
up(&fib->event_wait);
complete(&fib->event_wait);
}
spin_unlock_irqrestore(&fib->event_lock, flagv);
@ -376,16 +375,16 @@ unsigned int aac_intr_normal(struct aac_dev *dev, u32 index, int isAif,
start_callback = 1;
} else {
unsigned long flagv;
int complete = 0;
int completed = 0;
dprintk((KERN_INFO "event_wait up\n"));
spin_lock_irqsave(&fib->event_lock, flagv);
if (fib->done == 2) {
fib->done = 1;
complete = 1;
completed = 1;
} else {
fib->done = 1;
up(&fib->event_wait);
complete(&fib->event_wait);
}
spin_unlock_irqrestore(&fib->event_lock, flagv);
@ -395,7 +394,7 @@ unsigned int aac_intr_normal(struct aac_dev *dev, u32 index, int isAif,
mflags);
FIB_COUNTER_INCREMENT(aac_config.NativeRecved);
if (complete)
if (completed)
aac_fib_complete(fib);
}
} else {
@ -428,16 +427,16 @@ unsigned int aac_intr_normal(struct aac_dev *dev, u32 index, int isAif,
start_callback = 1;
} else {
unsigned long flagv;
int complete = 0;
int completed = 0;
dprintk((KERN_INFO "event_wait up\n"));
spin_lock_irqsave(&fib->event_lock, flagv);
if (fib->done == 2) {
fib->done = 1;
complete = 1;
completed = 1;
} else {
fib->done = 1;
up(&fib->event_wait);
complete(&fib->event_wait);
}
spin_unlock_irqrestore(&fib->event_lock, flagv);
@ -447,7 +446,7 @@ unsigned int aac_intr_normal(struct aac_dev *dev, u32 index, int isAif,
mflags);
FIB_COUNTER_INCREMENT(aac_config.NormalRecved);
if (complete)
if (completed)
aac_fib_complete(fib);
}
}

2
drivers/scsi/aacraid/linit.c
View File

@ -1560,7 +1560,7 @@ static void __aac_shutdown(struct aac_dev * aac)
struct fib *fib = &aac->fibs[i];
if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) &&
(fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected)))
up(&fib->event_wait);
complete(&fib->event_wait);
}
kthread_stop(aac->thread);
aac->thread = NULL;

2
drivers/scsi/aacraid/src.c
View File

@ -106,7 +106,7 @@ static irqreturn_t aac_src_intr_message(int irq, void *dev_id)
spin_lock_irqsave(&dev->sync_fib->event_lock, sflags);
if (dev->sync_fib->flags & FIB_CONTEXT_FLAG_WAIT) {
dev->management_fib_count--;
up(&dev->sync_fib->event_wait);
complete(&dev->sync_fib->event_wait);
}
spin_unlock_irqrestore(&dev->sync_fib->event_lock,
sflags);