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authorDave Airlie <airlied@redhat.com>2010-12-06 12:31:50 +1000
committerDave Airlie <airlied@redhat.com>2011-01-05 13:43:05 +1000
commit5cfb3c3a1013e7fca54c3624871755cdfd960b3b (patch)
treeeefe3260161c4ada9988e18bb9d8b49626bc0947 /drivers/gpu
parent6c2df40ec00e52a5fb0c691b0e79324b9015aaa4 (diff)
vga_switcheroo: make power switch handler optional
At least on the nvidia mux the power switch seems to be executed by the ACPI PS0/PS3 methods so need to do it explicitly. Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/vga/vga_switcheroo.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
index 0a8678fe4d64..c3c213b74478 100644
--- a/drivers/gpu/vga/vga_switcheroo.c
+++ b/drivers/gpu/vga/vga_switcheroo.c
@@ -191,9 +191,8 @@ static int vga_switcheroo_debugfs_open(struct inode *inode, struct file *file)
static int vga_switchon(struct vga_switcheroo_client *client)
{
- int ret;
-
- ret = vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_ON);
+ if (vgasr_priv.handler->power_state)
+ vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_ON);
/* call the driver callback to turn on device */
client->set_gpu_state(client->pdev, VGA_SWITCHEROO_ON);
client->pwr_state = VGA_SWITCHEROO_ON;
@@ -204,7 +203,8 @@ static int vga_switchoff(struct vga_switcheroo_client *client)
{
/* call the driver callback to turn off device */
client->set_gpu_state(client->pdev, VGA_SWITCHEROO_OFF);
- vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_OFF);
+ if (vgasr_priv.handler->power_state)
+ vgasr_priv.handler->power_state(client->id, VGA_SWITCHEROO_OFF);
client->pwr_state = VGA_SWITCHEROO_OFF;
return 0;
}