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path: root/drivers/ata/sata_via.c
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Diffstat (limited to 'drivers/ata/sata_via.c')
-rw-r--r--drivers/ata/sata_via.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/ata/sata_via.c b/drivers/ata/sata_via.c
index a3f6d330d106..93b8d783936a 100644
--- a/drivers/ata/sata_via.c
+++ b/drivers/ata/sata_via.c
@@ -80,6 +80,10 @@ struct svia_priv {
bool wd_workaround;
};
+static int vt6420_hotplug;
+module_param_named(vt6420_hotplug, vt6420_hotplug, int, 0644);
+MODULE_PARM_DESC(vt6420_hotplug, "Enable hot-plug support for VT6420 (0=Don't support, 1=support)");
+
static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
#ifdef CONFIG_PM_SLEEP
static int svia_pci_device_resume(struct pci_dev *pdev);
@@ -473,6 +477,11 @@ static int vt6420_prepare_host(struct pci_dev *pdev, struct ata_host **r_host)
struct ata_host *host;
int rc;
+ if (vt6420_hotplug) {
+ ppi[0]->port_ops->scr_read = svia_scr_read;
+ ppi[0]->port_ops->scr_write = svia_scr_write;
+ }
+
rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
if (rc)
return rc;
@@ -556,7 +565,7 @@ static void svia_wd_fix(struct pci_dev *pdev)
pci_write_config_byte(pdev, 0x52, tmp8 | BIT(2));
}
-static irqreturn_t vt6421_interrupt(int irq, void *dev_instance)
+static irqreturn_t vt642x_interrupt(int irq, void *dev_instance)
{
struct ata_host *host = dev_instance;
irqreturn_t rc = ata_bmdma_interrupt(irq, dev_instance);
@@ -644,7 +653,7 @@ static void svia_configure(struct pci_dev *pdev, int board_id,
pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
}
- if (board_id == vt6421) {
+ if ((board_id == vt6420 && vt6420_hotplug) || board_id == vt6421) {
/* enable IRQ on hotplug */
pci_read_config_byte(pdev, SVIA_MISC_3, &tmp8);
if ((tmp8 & SATA_HOTPLUG) != SATA_HOTPLUG) {
@@ -744,8 +753,8 @@ static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
svia_configure(pdev, board_id, hpriv);
pci_set_master(pdev);
- if (board_id == vt6421)
- return ata_host_activate(host, pdev->irq, vt6421_interrupt,
+ if ((board_id == vt6420 && vt6420_hotplug) || board_id == vt6421)
+ return ata_host_activate(host, pdev->irq, vt642x_interrupt,
IRQF_SHARED, &svia_sht);
else
return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,