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path: root/drivers/gpu/vga/vgaarb.c
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Diffstat (limited to 'drivers/gpu/vga/vgaarb.c')
-rw-r--r--drivers/gpu/vga/vgaarb.c29
1 files changed, 11 insertions, 18 deletions
diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/gpu/vga/vgaarb.c
index 3df8fc0ec01..e893f6e1937 100644
--- a/drivers/gpu/vga/vgaarb.c
+++ b/drivers/gpu/vga/vgaarb.c
@@ -141,7 +141,11 @@ EXPORT_SYMBOL_GPL(vga_default_device);
void vga_set_default_device(struct pci_dev *pdev)
{
- vga_default = pdev;
+ if (vga_default == pdev)
+ return;
+
+ pci_dev_put(vga_default);
+ vga_default = pci_dev_get(pdev);
}
#endif
@@ -577,7 +581,7 @@ static bool vga_arbiter_add_pci_device(struct pci_dev *pdev)
#ifndef __ARCH_HAS_VGA_DEFAULT_DEVICE
if (vga_default == NULL &&
((vgadev->owns & VGA_RSRC_LEGACY_MASK) == VGA_RSRC_LEGACY_MASK))
- vga_default = pci_dev_get(pdev);
+ vga_set_default_device(pdev);
#endif
vga_arbiter_check_bridge_sharing(vgadev);
@@ -613,10 +617,8 @@ static bool vga_arbiter_del_pci_device(struct pci_dev *pdev)
}
#ifndef __ARCH_HAS_VGA_DEFAULT_DEVICE
- if (vga_default == pdev) {
- pci_dev_put(vga_default);
- vga_default = NULL;
- }
+ if (vga_default == pdev)
+ vga_set_default_device(NULL);
#endif
if (vgadev->decodes & (VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM))
@@ -1066,7 +1068,6 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
}
} else if (strncmp(curr_pos, "target ", 7) == 0) {
- struct pci_bus *pbus;
unsigned int domain, bus, devfn;
struct vga_device *vgadev;
@@ -1085,19 +1086,11 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
pr_debug("vgaarb: %s ==> %x:%x:%x.%x\n", curr_pos,
domain, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
- pbus = pci_find_bus(domain, bus);
- pr_debug("vgaarb: pbus %p\n", pbus);
- if (pbus == NULL) {
- pr_err("vgaarb: invalid PCI domain and/or bus address %x:%x\n",
- domain, bus);
- ret_val = -ENODEV;
- goto done;
- }
- pdev = pci_get_slot(pbus, devfn);
+ pdev = pci_get_domain_bus_and_slot(domain, bus, devfn);
pr_debug("vgaarb: pdev %p\n", pdev);
if (!pdev) {
- pr_err("vgaarb: invalid PCI address %x:%x\n",
- bus, devfn);
+ pr_err("vgaarb: invalid PCI address %x:%x:%x\n",
+ domain, bus, devfn);
ret_val = -ENODEV;
goto done;
}