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drm/radeon/kms: Don't try to enable IRQ if we have no handler installed

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If for any reason we haven't installed handler we shouldn't try to
enable IRQ/MSI on the hw so we don't get unhandled IRQ/MSI which
makes the kernel sad.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jerome Glisse
2010-01-07 15:39:14 +01:00
committed by Dave Airlie
parent e77cef9c2d
commit 003e69f986
4 changed files with 28 additions and 5 deletions
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8
drivers/gpu/drm/radeon/r100.c
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@@ -131,7 +131,8 @@ void r100_hpd_init(struct radeon_device *rdev)
break;
}
}
r100_irq_set(rdev);
if (rdev->irq.installed)
r100_irq_set(rdev);
}
void r100_hpd_fini(struct radeon_device *rdev)
@@ -243,6 +244,11 @@ int r100_irq_set(struct radeon_device *rdev)
{
uint32_t tmp = 0;
if (!rdev->irq.installed) {
WARN(1, "Can't enable IRQ/MSI because no handler is installed.\n");
WREG32(R_000040_GEN_INT_CNTL, 0);
return -EINVAL;
}
if (rdev->irq.sw_int) {
tmp |= RADEON_SW_INT_ENABLE;
}