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| author | Ben Skeggs <bskeggs@redhat.com> | 2012-09-27 09:13:43 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2012-09-27 09:13:43 +1000 |
| commit | 833dd8224edda0bc1cfa1b0fd5cbe7a36fd59db8 (patch) | |
| tree | 6b557861889b009555ba1faf7da22131dd306f57 | |
| parent | 79eee7aa0d4de5a42331c63d3c7c735248b53d0c (diff) | |
| download | linux-833dd8224edda0bc1cfa1b0fd5cbe7a36fd59db8.tar.bz2 | |
drm/nvc0/fifo: ignore bits in PFIFO_INTR that aren't set in PFIFO_INTR_EN
PFIFO_INTR = 0x40000000 appears to be a normal case on nvc0/nve0 PFIFO,
the binary driver appears to completely ignore it in its PFIFO interrupt
handler and even masks off the bit (as we do) in PFIFO_INTR_EN at init
time.
The bits still light up in the hardware sometimes though, so lets just
ignore any bits we haven't explicitely requested.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvc0_fifo.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nve0_fifo.c | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nvc0_fifo.c b/drivers/gpu/drm/nouveau/nvc0_fifo.c index 7d85553d518c..cd39eb99f5b1 100644 --- a/drivers/gpu/drm/nouveau/nvc0_fifo.c +++ b/drivers/gpu/drm/nouveau/nvc0_fifo.c @@ -373,7 +373,8 @@ nvc0_fifo_isr_subfifo_intr(struct drm_device *dev, int unit) static void nvc0_fifo_isr(struct drm_device *dev) { - u32 stat = nv_rd32(dev, 0x002100); + u32 mask = nv_rd32(dev, 0x002140); + u32 stat = nv_rd32(dev, 0x002100) & mask; if (stat & 0x00000100) { NV_INFO(dev, "PFIFO: unknown status 0x00000100\n"); diff --git a/drivers/gpu/drm/nouveau/nve0_fifo.c b/drivers/gpu/drm/nouveau/nve0_fifo.c index e98d144e6eb9..281bece751b6 100644 --- a/drivers/gpu/drm/nouveau/nve0_fifo.c +++ b/drivers/gpu/drm/nouveau/nve0_fifo.c @@ -345,7 +345,8 @@ nve0_fifo_isr_subfifo_intr(struct drm_device *dev, int unit) static void nve0_fifo_isr(struct drm_device *dev) { - u32 stat = nv_rd32(dev, 0x002100); + u32 mask = nv_rd32(dev, 0x002140); + u32 stat = nv_rd32(dev, 0x002100) & mask; if (stat & 0x00000100) { NV_INFO(dev, "PFIFO: unknown status 0x00000100\n"); |