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path: root/drivers/gpu/drm/nouveau/nouveau_acpi.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_acpi.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_acpi.c16
1 files changed, 2 insertions, 14 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c
index 279206997e5c..622424692b3b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_acpi.c
+++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c
@@ -46,7 +46,6 @@ static struct nouveau_dsm_priv {
bool dsm_detected;
bool optimus_detected;
acpi_handle dhandle;
- acpi_handle other_handle;
acpi_handle rom_handle;
} nouveau_dsm_priv;
@@ -222,10 +221,9 @@ static int nouveau_dsm_pci_probe(struct pci_dev *pdev)
if (!dhandle)
return false;
- if (!acpi_has_method(dhandle, "_DSM")) {
- nouveau_dsm_priv.other_handle = dhandle;
+ if (!acpi_has_method(dhandle, "_DSM"))
return false;
- }
+
if (acpi_check_dsm(dhandle, nouveau_dsm_muid, 0x00000102,
1 << NOUVEAU_DSM_POWER))
retval |= NOUVEAU_DSM_HAS_MUX;
@@ -301,16 +299,6 @@ static bool nouveau_dsm_detect(void)
printk(KERN_INFO "VGA switcheroo: detected DSM switching method %s handle\n",
acpi_method_name);
nouveau_dsm_priv.dsm_detected = true;
- /*
- * On some systems hotplug events are generated for the device
- * being switched off when _DSM is executed. They cause ACPI
- * hotplug to trigger and attempt to remove the device from
- * the system, which causes it to break down. Prevent that from
- * happening by setting the no_hotplug flag for the involved
- * ACPI device objects.
- */
- acpi_bus_no_hotplug(nouveau_dsm_priv.dhandle);
- acpi_bus_no_hotplug(nouveau_dsm_priv.other_handle);
ret = true;
}