diff mbox

drm: Adding the option IRQ_ONESHOT to support irq oneshot

Message ID 27240C0AC20F114CBF8149A2696CBE4A172DCC@SHSMSX101.ccr.corp.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Chuansheng Liu Aug. 30, 2012, 8:27 a.m. UTC 
From: liu chuansheng <chuansheng.liu@intel.com>
Subject: [PATCH] drm: Adding the option IRQ_ONESHOT to support irq oneshot

For some platforms, we want the irq is handled as one shot,
then even when we use the irq thread, with this option, the new
irq will come until the irq thread finished.

So we have the requirement for IRQ_ONESHOT.

Signed-off-by: liu chuansheng <chuansheng.liu@intel.com>
---
 drivers/gpu/drm/drm_irq.c |    3 +++
 include/drm/drmP.h        |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)
diff mbox

Patch

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 03f16f3..7a8a581 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -345,6 +345,9 @@  int drm_irq_install(struct drm_device *dev)
        if (drm_core_check_feature(dev, DRIVER_IRQ_SHARED))
                sh_flags = IRQF_SHARED;
 
+        if (drm_core_check_feature(dev, DRIVER_IRQ_ONESHOT))
+                sh_flags |= IRQF_ONESHOT;
+
        if (dev->devname)
                irqname = dev->devname;
        else
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index d6b67bb..dfede31 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -152,6 +152,7 @@  int drm_err(const char *func, const char *format, ...);
 #define DRIVER_GEM         0x1000
 #define DRIVER_MODESET     0x2000
 #define DRIVER_PRIME       0x4000
+#define DRIVER_IRQ_ONESHOT 0x8000
 
 #define DRIVER_BUS_PCI 0x1
 #define DRIVER_BUS_PLATFORM 0x2