drm: Remove DRM_ERR OS macro.

This was used to make all ioctl handlers return -errno on linux and errno on
*BSD.  Instead, just return -errno in shared code, and flip sign on return f
shared code to *BSD code.

Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/via_irq.c b/drivers/char/drm/via_irq.c
index 8dc99b5..a5297e7 100644
--- a/drivers/char/drm/via_irq.c
+++ b/drivers/char/drm/via_irq.c
@@ -205,13 +205,13 @@
 
 	if (!dev_priv) {
 		DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
-		return DRM_ERR(EINVAL);
+		return -EINVAL;
 	}
 
 	if (irq >= drm_via_irq_num) {
 		DRM_ERROR("%s Trying to wait on unknown irq %d\n", __FUNCTION__,
 			  irq);
-		return DRM_ERR(EINVAL);
+		return -EINVAL;
 	}
 
 	real_irq = dev_priv->irq_map[irq];
@@ -219,7 +219,7 @@
 	if (real_irq < 0) {
 		DRM_ERROR("%s Video IRQ %d not available on this hardware.\n",
 			  __FUNCTION__, irq);
-		return DRM_ERR(EINVAL);
+		return -EINVAL;
 	}
 
 	masks = dev_priv->irq_masks;
@@ -343,13 +343,13 @@
 	int force_sequence;
 
 	if (!dev->irq)
-		return DRM_ERR(EINVAL);
+		return -EINVAL;
 
 	DRM_COPY_FROM_USER_IOCTL(irqwait, argp, sizeof(irqwait));
 	if (irqwait.request.irq >= dev_priv->num_irqs) {
 		DRM_ERROR("%s Trying to wait on unknown irq %d\n", __FUNCTION__,
 			  irqwait.request.irq);
-		return DRM_ERR(EINVAL);
+		return -EINVAL;
 	}
 
 	cur_irq += irqwait.request.irq;
@@ -361,13 +361,13 @@
 	case VIA_IRQ_ABSOLUTE:
 		break;
 	default:
-		return DRM_ERR(EINVAL);
+		return -EINVAL;
 	}
 
 	if (irqwait.request.type & VIA_IRQ_SIGNAL) {
 		DRM_ERROR("%s Signals on Via IRQs not implemented yet.\n",
 			  __FUNCTION__);
-		return DRM_ERR(EINVAL);
+		return -EINVAL;
 	}
 
 	force_sequence = (irqwait.request.type & VIA_IRQ_FORCE_SEQUENCE);