| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 114/228] drm/nouveau/acpi: allow non-optimus setups to load vbios from acpi | Date | Wed, 4 Jun 2014 16:22:23 -0700 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Ilia Mirkin <imirkin@alum.mit.edu>
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@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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 @@ -389,9 +389,6 @@ 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 = ACPI_HANDLE(&pdev->dev); if (!dhandle) return false;
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