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[SCSI] fusion: add MSI support

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On Mon, Jan 16, 2006 at 06:53:24PM -0700, Moore, Eric wrote:
> Adding MSI support, and command line for enabling
> it.  By default, the command line option has MSI disabled.

mpt_msi_enable is initialized to 0 implicitly, no need to do that.  Also
replace if (mpt_msi_enable == 1) tests with just if (mpt_msi_enable).

Updated patch below:

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Christoph Hellwig 2006-01-17 13:44:29 +00:00 committed by James Bottomley
parent 7e55147fe3
commit 4ddce14e75
1 changed files with 11 additions and 0 deletions
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11
drivers/message/fusion/mptbase.c
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@ -81,6 +81,10 @@ MODULE_LICENSE("GPL");
/* /*
* cmd line parameters * cmd line parameters
*/ */
static int mpt_msi_enable;
module_param(mpt_msi_enable, int, 0);
MODULE_PARM_DESC(mpt_msi_enable, " MSI Support Enable (default=0)");
#ifdef MFCNT #ifdef MFCNT
static int mfcounter = 0; static int mfcounter = 0;
#define PRINT_MF_COUNT 20000 #define PRINT_MF_COUNT 20000
@ -1444,6 +1448,9 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
ioc->pci_irq = -1; ioc->pci_irq = -1;
if (pdev->irq) { if (pdev->irq) {
if (mpt_msi_enable && !pci_enable_msi(pdev))
printk(MYIOC_s_INFO_FMT "PCI-MSI enabled\n", ioc->name);
r = request_irq(pdev->irq, mpt_interrupt, SA_SHIRQ, ioc->name, ioc); r = request_irq(pdev->irq, mpt_interrupt, SA_SHIRQ, ioc->name, ioc);
if (r < 0) { if (r < 0) {
@ -1483,6 +1490,8 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
list_del(&ioc->list); list_del(&ioc->list);
free_irq(ioc->pci_irq, ioc); free_irq(ioc->pci_irq, ioc);
if (mpt_msi_enable)
pci_disable_msi(pdev);
iounmap(mem); iounmap(mem);
kfree(ioc); kfree(ioc);
pci_set_drvdata(pdev, NULL); pci_set_drvdata(pdev, NULL);
@ -2136,6 +2145,8 @@ mpt_adapter_dispose(MPT_ADAPTER *ioc)
if (ioc->pci_irq != -1) { if (ioc->pci_irq != -1) {
free_irq(ioc->pci_irq, ioc); free_irq(ioc->pci_irq, ioc);
if (mpt_msi_enable)
pci_disable_msi(ioc->pcidev);
ioc->pci_irq = -1; ioc->pci_irq = -1;
} }