diff options
| author | Anton Altaparmakov <aia21@cantab.net> | 2005-12-05 15:48:41 +0000 |
|---|---|---|
| committer | Anton Altaparmakov <aia21@cantab.net> | 2005-12-05 15:48:41 +0000 |
| commit | 292d4ed32e35df4755052b5002e533348d1648fd (patch) | |
| tree | 8522e6bab962696bd25a6c02fb068c674a09b7ee /drivers/char | |
| parent | 3c6af7fa787f21f8873a050568ed892312899eb5 (diff) | |
| parent | e4f5c82a92c2a546a16af1614114eec19120e40a (diff) | |
Merge branch 'master' of /usr/src/ntfs-2.6/
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/drm/drm_context.c | 5 | ||||
| -rw-r--r-- | drivers/char/drm/drm_lock.c | 16 | ||||
| -rw-r--r-- | drivers/char/mem.c | 2 |
3 files changed, 16 insertions, 7 deletions
diff --git a/drivers/char/drm/drm_context.c b/drivers/char/drm/drm_context.c index bdd168d88f4..bd958d69a2a 100644 --- a/drivers/char/drm/drm_context.c +++ b/drivers/char/drm/drm_context.c @@ -432,7 +432,10 @@ int drm_addctx(struct inode *inode, struct file *filp, if (ctx.handle != DRM_KERNEL_CONTEXT) { if (dev->driver->context_ctor) - dev->driver->context_ctor(dev, ctx.handle); + if (!dev->driver->context_ctor(dev, ctx.handle)) { + DRM_DEBUG( "Running out of ctxs or memory.\n"); + return -ENOMEM; + } } ctx_entry = drm_alloc(sizeof(*ctx_entry), DRM_MEM_CTXLIST); diff --git a/drivers/char/drm/drm_lock.c b/drivers/char/drm/drm_lock.c index b276ae8a663..b48a595d54e 100644 --- a/drivers/char/drm/drm_lock.c +++ b/drivers/char/drm/drm_lock.c @@ -104,6 +104,10 @@ int drm_lock(struct inode *inode, struct file *filp, __set_current_state(TASK_RUNNING); remove_wait_queue(&dev->lock.lock_queue, &entry); + DRM_DEBUG("%d %s\n", lock.context, ret ? "interrupted" : "has lock"); + if (ret) + return ret; + sigemptyset(&dev->sigmask); sigaddset(&dev->sigmask, SIGSTOP); sigaddset(&dev->sigmask, SIGTSTP); @@ -116,8 +120,12 @@ int drm_lock(struct inode *inode, struct file *filp, if (dev->driver->dma_ready && (lock.flags & _DRM_LOCK_READY)) dev->driver->dma_ready(dev); - if (dev->driver->dma_quiescent && (lock.flags & _DRM_LOCK_QUIESCENT)) - return dev->driver->dma_quiescent(dev); + if (dev->driver->dma_quiescent && (lock.flags & _DRM_LOCK_QUIESCENT)) { + if (dev->driver->dma_quiescent(dev)) { + DRM_DEBUG("%d waiting for DMA quiescent\n", lock.context); + return DRM_ERR(EBUSY); + } + } /* dev->driver->kernel_context_switch isn't used by any of the x86 * drivers but is used by the Sparc driver. @@ -128,9 +136,7 @@ int drm_lock(struct inode *inode, struct file *filp, dev->driver->kernel_context_switch(dev, dev->last_context, lock.context); } - DRM_DEBUG("%d %s\n", lock.context, ret ? "interrupted" : "has lock"); - - return ret; + return 0; } /** diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 29c3b631445..91dd669273e 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -591,7 +591,7 @@ static inline size_t read_zero_pagealigned(char __user * buf, size_t size) if (vma->vm_start > addr || (vma->vm_flags & VM_WRITE) == 0) goto out_up; - if (vma->vm_flags & (VM_SHARED | VM_HUGETLB | VM_UNPAGED)) + if (vma->vm_flags & (VM_SHARED | VM_HUGETLB)) break; count = vma->vm_end - addr; if (count > size) |