From: Prakash, Sathya Date: Fri, 8 Feb 2008 11:05:40 +0000 (+0530) Subject: [SCSI] mpt fusion: Avoid racing when mptsas and mptcl module are loaded in parallel X-Git-Tag: firefly_0821_release~22444^2~17 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=07df8afa0dd54b8b89ad8aa93994c0d55a4a5921;p=firefly-linux-kernel-4.4.55.git [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 Signed-off-by: James Bottomley --- diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c index 425f60c21fdd..d381c38ccbaf 100644 --- a/drivers/message/fusion/mptbase.c +++ b/drivers/message/fusion/mptbase.c @@ -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)); }