AcoSail/kernel_optimize_test
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[PATCH] cciss: busy_initializing flag

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This patch adds a flag called busy_initializing.  If there are multiple
controllers in a server AND the HP agents are running it's possible the agents
may try to poll a card that is still initializing if the driver is removed and
then added again.

Signed-off-by: Don Brace <dab@hp.com>
Signed-off-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Mike Miller 2005-09-13 01:25:21 -07:00 committed by Linus Torvalds
parent 9dc7a86e85
commit 1f8ef3806c
2 changed files with 9 additions and 0 deletions
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8
drivers/block/cciss.c
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@ -468,6 +468,9 @@ static int cciss_open(struct inode *inode, struct file *filep)
printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name);
#endif /* CCISS_DEBUG */
if (host->busy_initializing)
return -EBUSY;
/*
* Root is allowed to open raw volume zero even if it's not configured
* so array config can still work. Root is also allowed to open any
@ -2742,6 +2745,9 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
i = alloc_cciss_hba();
if(i < 0)
return (-1);
hba[i]->busy_initializing = 1;
if (cciss_pci_init(hba[i], pdev) != 0)
goto clean1;
@ -2864,6 +2870,7 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
add_disk(disk);
}
hba[i]->busy_initializing = 0;
return(1);
clean4:
@ -2884,6 +2891,7 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
clean1:
release_io_mem(hba[i]);
free_hba(i);
hba[i]->busy_initializing = 0;
return(-1);
}

1
drivers/block/cciss.h
View File

@ -83,6 +83,7 @@ struct ctlr_info
int nr_allocs;
int nr_frees;
int busy_configuring;
int busy_initializing;
/* This element holds the zero based queue number of the last
* queue to be started. It is used for fairness.