drm/irq: Look up the pci irq directly in the drm_control ioctl

It's only ever called for legacy drivers, which are all pci.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 7cf407bbfed5..cbf6f259bfe4 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -377,7 +377,7 @@ int drm_control(struct drm_device *dev, void *data,
                 struct drm_file *file_priv)
 {
         struct drm_control *ctl = data;
-        int ret = 0;
+        int ret = 0, irq;
 
         /* if we haven't irq we fallback for compatibility reasons -
          * this used to be a separate function in drm_dma.h
@@ -393,8 +393,10 @@ int drm_control(struct drm_device *dev, void *data,
 
         switch (ctl->func) {
         case DRM_INST_HANDLER:
+                irq = dev->pdev->irq;
+
                 if (dev->if_version < DRM_IF_VERSION(1, 2) &&
-                    ctl->irq != drm_dev_to_irq(dev))
+                    ctl->irq != irq)
                         return -EINVAL;
                 mutex_lock(&dev->struct_mutex);
                 ret = drm_irq_install(dev);