drm/radeon/kms: Don't try to enable IRQ if we have no handler installed
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>
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 0c065f4..1f4f83d 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -285,7 +285,8 @@
}
}
}
- r600_irq_set(rdev);
+ if (rdev->irq.installed)
+ r600_irq_set(rdev);
}
void r600_hpd_fini(struct radeon_device *rdev)
@@ -2461,6 +2462,10 @@
u32 mode_int = 0;
u32 hpd1, hpd2, hpd3, hpd4 = 0, hpd5 = 0, hpd6 = 0;
+ if (!rdev->irq.installed) {
+ WARN(1, "Can't enable IRQ/MSI because no handler is installed.\n");
+ return -EINVAL;
+ }
/* don't enable anything if the ih is disabled */
if (!rdev->ih.enabled)
return 0;