diff options
Diffstat (limited to 'linux/gamma_dma.c')
| -rw-r--r-- | linux/gamma_dma.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/linux/gamma_dma.c b/linux/gamma_dma.c index a99f24ca..79433387 100644 --- a/linux/gamma_dma.c +++ b/linux/gamma_dma.c @@ -586,7 +586,8 @@ int gamma_dma(struct inode *inode, struct file *filp, unsigned int cmd, int retcode = 0; drm_dma_t d; - copy_from_user_ret(&d, (drm_dma_t *)arg, sizeof(d), -EFAULT); + if (copy_from_user(&d, (drm_dma_t *)arg, sizeof(d))) + return -EFAULT; DRM_DEBUG("%d %d: %d send, %d req\n", current->pid, d.context, d.send_count, d.request_count); @@ -621,7 +622,8 @@ int gamma_dma(struct inode *inode, struct file *filp, unsigned int cmd, DRM_DEBUG("%d returning, granted = %d\n", current->pid, d.granted_count); - copy_to_user_ret((drm_dma_t *)arg, &d, sizeof(d), -EFAULT); + if (copy_to_user((drm_dma_t *)arg, &d, sizeof(d))) + return -EFAULT; return retcode; } @@ -710,7 +712,8 @@ int gamma_control(struct inode *inode, struct file *filp, unsigned int cmd, drm_control_t ctl; int retcode; - copy_from_user_ret(&ctl, (drm_control_t *)arg, sizeof(ctl), -EFAULT); + if (copy_from_user(&ctl, (drm_control_t *)arg, sizeof(ctl))) + return -EFAULT; switch (ctl.func) { case DRM_INST_HANDLER: @@ -742,7 +745,8 @@ int gamma_lock(struct inode *inode, struct file *filp, unsigned int cmd, dev->lck_start = start = get_cycles(); #endif - copy_from_user_ret(&lock, (drm_lock_t *)arg, sizeof(lock), -EFAULT); + if (copy_from_user(&lock, (drm_lock_t *)arg, sizeof(lock))) + return -EFAULT; if (lock.context == DRM_KERNEL_CONTEXT) { DRM_ERROR("Process %d using kernel context %d\n", @@ -804,6 +808,15 @@ int gamma_lock(struct inode *inode, struct file *filp, unsigned int cmd, drm_flush_unblock(dev, lock.context, lock.flags); /* cleanup phase */ if (!ret) { + sigemptyset(&dev->sigmask); + sigaddset(&dev->sigmask, SIGSTOP); + sigaddset(&dev->sigmask, SIGTSTP); + sigaddset(&dev->sigmask, SIGTTIN); + sigaddset(&dev->sigmask, SIGTTOU); + dev->sigdata.context = lock.context; + dev->sigdata.lock = dev->lock.hw_lock; + block_all_signals(drm_notifier, &dev->sigdata, &dev->sigmask); + if (lock.flags & _DRM_LOCK_READY) gamma_dma_ready(dev); if (lock.flags & _DRM_LOCK_QUIESCENT) { |