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authorLukas Wunner <lukas@wunner.de>2015-08-28 13:30:32 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2015-10-16 15:50:56 +0200
commit21c5ba8c1ee02f204e556c26703cebaf9c4019e0 (patch)
tree7962da9adc13813fd2ffdbedfffe5e5f30bc597a /include/linux/vga_switcheroo.h
parent203d027de4d7068c607b60d4310a1599dec8839f (diff)
vga_switcheroo: Use VGA_SWITCHEROO_UNKNOWN_ID instead of -1
Signed-off-by: Lukas Wunner <lukas@wunner.de> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/linux/vga_switcheroo.h')
-rw-r--r--include/linux/vga_switcheroo.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/vga_switcheroo.h b/include/linux/vga_switcheroo.h
index e63661757505..88909a865b72 100644
--- a/include/linux/vga_switcheroo.h
+++ b/include/linux/vga_switcheroo.h
@@ -59,6 +59,9 @@ enum vga_switcheroo_state {
/**
* enum vga_switcheroo_client_id - client identifier
+ * @VGA_SWITCHEROO_UNKNOWN_ID: initial identifier assigned to vga clients.
+ * Determining the id requires the handler, so GPUs are given their
+ * true id in a delayed fashion in vga_switcheroo_enable()
* @VGA_SWITCHEROO_IGD: integrated graphics device
* @VGA_SWITCHEROO_DIS: discrete graphics device
* @VGA_SWITCHEROO_MAX_CLIENTS: currently no more than two GPUs are supported
@@ -66,6 +69,7 @@ enum vga_switcheroo_state {
* Client identifier. Audio clients use the same identifier & 0x100.
*/
enum vga_switcheroo_client_id {
+ VGA_SWITCHEROO_UNKNOWN_ID = -1,
VGA_SWITCHEROO_IGD,
VGA_SWITCHEROO_DIS,
VGA_SWITCHEROO_MAX_CLIENTS,