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authorMark Haverkamp <markh@linux-foundation.org>2007-03-15 17:27:21 (GMT)
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-03-20 15:55:05 (GMT)
commit33bb3b296207ff4f9e3b8dddb623e645ee1b8809 (patch)
tree9f8ccb325f7880e64668e6d41671ff32949a4b12 /drivers/scsi/aacraid
parentfe76df4235986cfacc2d3b71cef7c42bc1a6dd6c (diff)
downloadlinux-fsl-qoriq-33bb3b296207ff4f9e3b8dddb623e645ee1b8809.tar.xz
[SCSI] aacraid: Fix ioctl handling when adapter resets
Received from Mark Salyzyn, Outstanding ioctl calls still have some problems with aborting cleanly in the face of a reset iop recovery action should the adapter ever enter into a Firmware Assert (BlinkLED) condition. The enclosed patch resolves some uncovered flawed handling. Signed-off-by: Mark Haverkamp <markh@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/aacraid')
-rw-r--r--drivers/scsi/aacraid/commctrl.c7
-rw-r--r--drivers/scsi/aacraid/commsup.c20
2 files changed, 19 insertions, 8 deletions
diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
index 83d5680..3a8e7ca 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -64,6 +64,9 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
unsigned size;
int retval;
+ if (dev->in_reset) {
+ return -EBUSY;
+ }
fibptr = aac_fib_alloc(dev);
if(fibptr == NULL) {
return -ENOMEM;
@@ -469,6 +472,10 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
int i;
+ if (dev->in_reset) {
+ dprintk((KERN_DEBUG"aacraid: send raw srb -EBUSY\n"));
+ return -EBUSY;
+ }
if (!capable(CAP_SYS_ADMIN)){
dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n"));
return -EPERM;
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index e67ff13..c933df3 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -513,15 +513,15 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
}
udelay(5);
}
- } else if (down_interruptible(&fibptr->event_wait)) {
- spin_lock_irqsave(&fibptr->event_lock, flags);
- if (fibptr->done == 0) {
- fibptr->done = 2; /* Tell interrupt we aborted */
- spin_unlock_irqrestore(&fibptr->event_lock, flags);
- return -EINTR;
- }
+ } else
+ (void)down_interruptible(&fibptr->event_wait);
+ spin_lock_irqsave(&fibptr->event_lock, flags);
+ if (fibptr->done == 0) {
+ fibptr->done = 2; /* Tell interrupt we aborted */
spin_unlock_irqrestore(&fibptr->event_lock, flags);
+ return -EINTR;
}
+ spin_unlock_irqrestore(&fibptr->event_lock, flags);
BUG_ON(fibptr->done == 0);
if((fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)){
@@ -1062,7 +1062,7 @@ static int _aac_reset_adapter(struct aac_dev *aac)
/*
* Loop through the fibs, close the synchronous FIBS
*/
- for (index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) {
+ for (retval = 1, index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) {
struct fib *fib = &aac->fibs[index];
if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) &&
(fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected))) {
@@ -1071,8 +1071,12 @@ static int _aac_reset_adapter(struct aac_dev *aac)
up(&fib->event_wait);
spin_unlock_irqrestore(&fib->event_lock, flagv);
schedule();
+ retval = 0;
}
}
+ /* Give some extra time for ioctls to complete. */
+ if (retval == 0)
+ ssleep(2);
index = aac->cardtype;
/*