From 3a16e615cabfed18b1891a732e7243ef41dc0ad0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Mon, 2 Oct 2006 11:04:42 +0200 Subject: Make locked tasklet handling more robust. Initialize the spinlock unconditionally when struct drm_device is filled in, and return early in drm_locked_tasklet() if the driver doesn't support IRQs. --- linux-core/drm_irq.c | 4 ++-- linux-core/drm_stub.c | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/linux-core/drm_irq.c b/linux-core/drm_irq.c index d1a6a6b1..41038fd7 100644 --- a/linux-core/drm_irq.c +++ b/linux-core/drm_irq.c @@ -118,7 +118,6 @@ static int drm_irq_install(drm_device_t * dev) init_waitqueue_head(&dev->vbl_queue); spin_lock_init(&dev->vbl_lock); - spin_lock_init(&dev->tasklet_lock); INIT_LIST_HEAD(&dev->vbl_sigs.head); INIT_LIST_HEAD(&dev->vbl_sigs2.head); @@ -458,7 +457,8 @@ void drm_locked_tasklet(drm_device_t *dev, void (*func)(drm_device_t*)) unsigned int irqflags; static DECLARE_TASKLET(drm_tasklet, drm_locked_tasklet_func, 0); - if (test_bit(TASKLET_STATE_SCHED, &drm_tasklet.state)) + if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ) || + test_bit(TASKLET_STATE_SCHED, &drm_tasklet.state)) return; spin_lock_irqsave(&dev->tasklet_lock, irqflags); diff --git a/linux-core/drm_stub.c b/linux-core/drm_stub.c index ad78dcf7..839cf441 100644 --- a/linux-core/drm_stub.c +++ b/linux-core/drm_stub.c @@ -62,6 +62,7 @@ static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev, spin_lock_init(&dev->count_lock); spin_lock_init(&dev->drw_lock); + spin_lock_init(&dev->tasklet_lock); init_timer(&dev->timer); mutex_init(&dev->struct_mutex); mutex_init(&dev->ctxlist_mutex); -- cgit v1.2.3