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authorTakashi Iwai <tiwai@suse.de>2012-06-09 08:46:42 +0200
committerTakashi Iwai <tiwai@suse.de>2012-06-09 12:14:43 +0200
commitc91c3faea500da34d42a14735f1f67bb137b6413 (patch)
treebd475cbbc47c2fa527b1e4dbe0b9028a7a2a15d4 /drivers
parent8393ec4a13889339bacfb8b038fb13716eef7a2b (diff)
vga_switcheroo: Enable/disable audio clients at the right time
The audio clients have to be disabled before disabling the VGA and switching. Similarly, enabling the audio client should be done at last. Otherwise the audio-side operation stalls, eventually leading to Oops or lockups. Tested-by: Jörg-Volker Peetz <jvpeetz@web.de> Acked-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/vga/vga_switcheroo.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
index eb4f64f0a565..5b3c7d135dc9 100644
--- a/drivers/gpu/vga/vga_switcheroo.c
+++ b/drivers/gpu/vga/vga_switcheroo.c
@@ -304,8 +304,6 @@ static int vga_switchto_stage1(struct vga_switcheroo_client *new_client)
vga_switchon(new_client);
vga_set_default_device(new_client->pdev);
- set_audio_state(new_client->id, VGA_SWITCHEROO_ON);
-
return 0;
}
@@ -321,6 +319,8 @@ static int vga_switchto_stage2(struct vga_switcheroo_client *new_client)
active->active = false;
+ set_audio_state(active->id, VGA_SWITCHEROO_OFF);
+
if (new_client->fb_info) {
struct fb_event event;
event.info = new_client->fb_info;
@@ -334,11 +334,11 @@ static int vga_switchto_stage2(struct vga_switcheroo_client *new_client)
if (new_client->ops->reprobe)
new_client->ops->reprobe(new_client->pdev);
- set_audio_state(active->id, VGA_SWITCHEROO_OFF);
-
if (active->pwr_state == VGA_SWITCHEROO_ON)
vga_switchoff(active);
+ set_audio_state(new_client->id, VGA_SWITCHEROO_ON);
+
new_client->active = true;
return 0;
}
@@ -384,8 +384,9 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf,
/* pwr off the device not in use */
if (strncmp(usercmd, "OFF", 3) == 0) {
list_for_each_entry(client, &vgasr_priv.clients, list) {
- if (client->active)
+ if (client->active || client_is_audio(client))
continue;
+ set_audio_state(client->id, VGA_SWITCHEROO_OFF);
if (client->pwr_state == VGA_SWITCHEROO_ON)
vga_switchoff(client);
}
@@ -394,10 +395,11 @@ vga_switcheroo_debugfs_write(struct file *filp, const char __user *ubuf,
/* pwr on the device not in use */
if (strncmp(usercmd, "ON", 2) == 0) {
list_for_each_entry(client, &vgasr_priv.clients, list) {
- if (client->active)
+ if (client->active || client_is_audio(client))
continue;
if (client->pwr_state == VGA_SWITCHEROO_OFF)
vga_switchon(client);
+ set_audio_state(client->id, VGA_SWITCHEROO_ON);
}
goto out;
}