[PATCH 3.2 45/92] drm/nouveau/acpi: allow non-optimus setups to load vbios from acpi

From: Ben Hutchings
Date: Fri Jun 06 2014 - 21:35:42 EST


3.2.60-rc1 review patch. If anyone has any objections, please let me know.

------------------

From: Ilia Mirkin <imirkin@xxxxxxxxxxxx>

commit a3d0b1218d351c6e6f3cea36abe22236a08cb246 upstream.

There appear to be a crop of new hardware where the vbios is not
available from PROM/PRAMIN, but there is a valid _ROM method in ACPI.
The data read from PCIROM almost invariably contains invalid
instructions (still has the x86 opcodes), which makes this a low-risk
way to try to obtain a valid vbios image.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76475
Signed-off-by: Ilia Mirkin <imirkin@xxxxxxxxxxxx>
Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/nouveau/nouveau_acpi.c | 3 ---
1 file changed, 3 deletions(-)

--- a/drivers/gpu/drm/nouveau/nouveau_acpi.c
+++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c
@@ -332,9 +332,6 @@ bool nouveau_acpi_rom_supported(struct p
acpi_status status;
acpi_handle dhandle, rom_handle;

- if (!nouveau_dsm_priv.dsm_detected && !nouveau_dsm_priv.optimus_detected)
- return false;
-
dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
if (!dhandle)
return false;

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