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drm/nouveau/ibus/gk20a: use udelay() in interrupt context 

gk20a_ibus_init_ibus_ring() can be called from gk20a_ibus_intr(), in
non-interruptible context. Replace use of usleep_range() with udelay().

Reported-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
hifive-unleashed-5.1
Alexandre Courbot 2016-07-06 23:04:56 +09:00 committed by Ben Skeggs
parent 69405d3da9
commit 69b624983f
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c
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@ -29,7 +29,7 @@ gk20a_ibus_init_ibus_ring(struct nvkm_subdev *ibus)
nvkm_mask(device, 0x137250, 0x3f, 0);
nvkm_mask(device, 0x000200, 0x20, 0);
usleep_range(20, 30);
udelay(20);
nvkm_mask(device, 0x000200, 0x20, 0x20);
nvkm_wr32(device, 0x12004c, 0x4);