Commit dae77214 authored by Vivek Mahajan's avatar Vivek Mahajan Committed by Jeff Garzik
Browse files

sata_sil24: MSI support, disabled by default 



The following patch adds MSI support. Some platforms
may have broken MSI, so those are defaulted to use
legacy PCI interrupts.

Signed-off-by: default avatarVivek Mahajan <vivek.mahajan@freescale.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 097dac91

drivers/ata/sata_sil24.c

+9 −0
Original line number Diff line number Diff line
@@ -417,6 +417,10 @@ static struct ata_port_operations sil24_ops = { 
#endif

};



static int sata_sil24_msi;    /* Disable MSI */

module_param_named(msi, sata_sil24_msi, bool, S_IRUGO);

MODULE_PARM_DESC(msi, "Enable MSI (Default: false)");



/*

 * Use bits 30-31 of port_flags to encode available port numbers.

 * Current maxium is 4.
@@ -1340,6 +1344,11 @@ static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 


	sil24_init_controller(host);



	if (sata_sil24_msi && !pci_enable_msi(pdev)) {

		dev_printk(KERN_INFO, &pdev->dev, "Using MSI\n");

		pci_intx(pdev, 0);

	}



	pci_set_master(pdev);

	return ata_host_activate(host, pdev->irq, sil24_interrupt, IRQF_SHARED,

				 &sil24_sht);