drm/irq: track the irq installed in drm_irq_install in dev->irq
To get rid of the dev->bus->get_irq callback we need to pass in the
desired irq explicitly into drm_irq_install. To avoid having to do the
same for drm_irq_unistall just track it internally. That leaves
drivers with less room to botch things up.
v2: Add the hunk lost in an earlier patch to this one (Thierry).
v3: Fix up the totally fumbled logic in drm_irq_install and use the
local variable consistently. Spotted by both Thierry and Laurent.
Shame on me for failing to properly test the rebase version of this
patch ...
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 589e865..7cf407b 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -249,14 +249,16 @@
*/
int drm_irq_install(struct drm_device *dev)
{
- int ret;
+ int ret, irq;
unsigned long sh_flags = 0;
char *irqname;
+ irq = drm_dev_to_irq(dev);
+
if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
return -EINVAL;
- if (drm_dev_to_irq(dev) == 0)
+ if (irq == 0)
return -EINVAL;
/* Driver must have been initialized */
@@ -267,7 +269,7 @@
return -EBUSY;
dev->irq_enabled = true;
- DRM_DEBUG("irq=%d\n", drm_dev_to_irq(dev));
+ DRM_DEBUG("irq=%d\n", irq);
/* Before installing handler */
if (dev->driver->irq_preinstall)
@@ -282,7 +284,7 @@
else
irqname = dev->driver->name;
- ret = request_irq(drm_dev_to_irq(dev), dev->driver->irq_handler,
+ ret = request_irq(irq, dev->driver->irq_handler,
sh_flags, irqname, dev);
if (ret < 0) {
@@ -301,7 +303,9 @@
dev->irq_enabled = false;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
vga_client_register(dev->pdev, NULL, NULL, NULL);
- free_irq(drm_dev_to_irq(dev), dev);
+ free_irq(irq, dev);
+ } else {
+ dev->irq = irq;
}
return ret;
@@ -344,7 +348,7 @@
if (!irq_enabled)
return -EINVAL;
- DRM_DEBUG("irq=%d\n", drm_dev_to_irq(dev));
+ DRM_DEBUG("irq=%d\n", dev->irq);
if (!drm_core_check_feature(dev, DRIVER_MODESET))
vga_client_register(dev->pdev, NULL, NULL, NULL);
@@ -352,7 +356,7 @@
if (dev->driver->irq_uninstall)
dev->driver->irq_uninstall(dev);
- free_irq(drm_dev_to_irq(dev), dev);
+ free_irq(dev->irq, dev);
return 0;
}
