drm/nouveau/bios: fetch the vbios from PROM using only aligned 32-bit accesses

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Other kind of accesses are unreliable on Kepler cards. As advised by NVIDIA,
let's only use 32-bit accesses to fetch the vbios from PROM.

This fixes vbios fetching on my nve7 which failed in certain specific
conditions.

I suggest we Cc stable, for all kernels they still maintain after the big
rewrite.

Suggested-by: Christian Zander <czander@nvidia.com>
Signed-off-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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Martin Peres 2014-03-25 22:23:23 +01:00 • committed by Ben Skeggs

parent 0e994d6456

commit 18acc6d84e

1 changed files with 19 additions and 14 deletions

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drivers/gpu/drm/nouveau/core/subdev/bios/base.c

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