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[SCSI] mpt fusion: Avoid racing when mptsas and mptcl module are loaded in parallel 

This patch sets the IOC pointer in drvrdata of pcidev before adding
the IOC into the list of IOCs. Without this patch the driver oops when
the mptsas and mptctl modules are loaded in parallel.

Signed-off-by: Sathya Prakash <sathya.prakash@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Prakash, Sathya 2008-02-08 16:35:40 +05:30 committed by James Bottomley
parent 90a95af85f
commit 07df8afa0d
1 changed files with 3 additions and 1 deletions
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4
drivers/message/fusion/mptbase.c
View File

@ -1658,6 +1658,9 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
ioc->active = 0;
CHIPREG_WRITE32(&ioc->chip->IntStatus, 0);
/* Set IOC ptr in the pcidev's driver data. */
pci_set_drvdata(ioc->pcidev, ioc);
/* Set lookup ptr. */
list_add_tail(&ioc->list, &ioc_list);
@ -1999,7 +2002,6 @@ mpt_do_ioc_recovery(MPT_ADAPTER *ioc, u32 reason, int sleepFlag)
irq_allocated = 1;
ioc->pci_irq = ioc->pcidev->irq;
pci_set_master(ioc->pcidev); /* ?? */
pci_set_drvdata(ioc->pcidev, ioc);
dprintk(ioc, printk(MYIOC_s_INFO_FMT "installed at interrupt "
"%d\n", ioc->name, ioc->pcidev->irq));
}