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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/gpu/drm/drm_irq.c
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@@ -51,13 +51,18 @@
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  * OTHER DEALINGS IN THE SOFTWARE.
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  */
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-#include <drm/drm_irq.h>
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-#include <drm/drmP.h>
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-#include <linux/interrupt.h>	/* For task queue support */
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-
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-#include <linux/vgaarb.h>
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 #include <linux/export.h>
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+#include <linux/interrupt.h>	/* For task queue support */
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+#include <linux/pci.h>
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+#include <linux/vgaarb.h>
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+
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+#include <drm/drm.h>
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+#include <drm/drm_device.h>
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+#include <drm/drm_drv.h>
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+#include <drm/drm_irq.h>
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+#include <drm/drm_print.h>
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+#include <drm/drm_vblank.h>
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 #include "drm_internal.h"
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@@ -103,14 +108,7 @@
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 	int ret;
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 	unsigned long sh_flags = 0;
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-	if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
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-		return -EINVAL;
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-
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 	if (irq == 0)
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-		return -EINVAL;
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-
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-	/* Driver must have been initialized */
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-	if (!dev->dev_private)
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 		return -EINVAL;
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 	if (dev->irq_enabled)
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@@ -123,8 +121,8 @@
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 	if (dev->driver->irq_preinstall)
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 		dev->driver->irq_preinstall(dev);
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-	/* Install handler */
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-	if (drm_core_check_feature(dev, DRIVER_IRQ_SHARED))
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+	/* PCI devices require shared interrupts. */
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+	if (dev->pdev)
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 		sh_flags = IRQF_SHARED;
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 	ret = request_irq(irq, dev->driver->irq_handler,
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@@ -174,9 +172,6 @@
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 	bool irq_enabled;
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 	int i;
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-	if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
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-		return -EINVAL;
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-
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 	irq_enabled = dev->irq_enabled;
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 	dev->irq_enabled = false;
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@@ -186,7 +181,7 @@
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 	 * vblank/irq handling. KMS drivers must ensure that vblanks are all
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 	 * disabled when uninstalling the irq handler.
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 	 */
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-	if (dev->num_crtcs) {
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+	if (drm_dev_has_vblank(dev)) {
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 		spin_lock_irqsave(&dev->vbl_lock, irqflags);
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 		for (i = 0; i < dev->num_crtcs; i++) {
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 			struct drm_vblank_crtc *vblank = &dev->vblank[i];
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@@ -219,6 +214,7 @@
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 }
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 EXPORT_SYMBOL(drm_irq_uninstall);
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+#if IS_ENABLED(CONFIG_DRM_LEGACY)
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 int drm_legacy_irq_control(struct drm_device *dev, void *data,
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 			   struct drm_file *file_priv)
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 {
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@@ -259,3 +255,4 @@
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 		return -EINVAL;
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 	}
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 }
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+#endif