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author | 2019-01-10 11:41:59 -0800 | |
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committer | 2019-01-10 11:41:59 -0800 | |
commit | 49e41801b335f64610bbfd23e8f2bbaf34d46276 (patch) | |
tree | 4fbedacd1de1bbd4054f07f93031aebcb7b7a919 /drivers/uio/uio.c | |
parent | security: integrity: partial revert of make ima_main explicitly non-modular (diff) | |
parent | Linux 5.0-rc1 (diff) | |
download | linux-dev-49e41801b335f64610bbfd23e8f2bbaf34d46276.tar.xz linux-dev-49e41801b335f64610bbfd23e8f2bbaf34d46276.zip |
Merge tag 'v5.0-rc1' into next-general
Linux 5.0-rc1
Sync to pick up LSM stacking work (which is based on -rc1).
Diffstat (limited to 'drivers/uio/uio.c')
-rw-r--r-- | drivers/uio/uio.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index 0a357db4b31b..131342280b46 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -569,20 +569,20 @@ static ssize_t uio_read(struct file *filep, char __user *buf, ssize_t retval = 0; s32 event_count; - mutex_lock(&idev->info_lock); - if (!idev->info || !idev->info->irq) - retval = -EIO; - mutex_unlock(&idev->info_lock); - - if (retval) - return retval; - if (count != sizeof(s32)) return -EINVAL; add_wait_queue(&idev->wait, &wait); do { + mutex_lock(&idev->info_lock); + if (!idev->info || !idev->info->irq) { + retval = -EIO; + mutex_unlock(&idev->info_lock); + break; + } + mutex_unlock(&idev->info_lock); + set_current_state(TASK_INTERRUPTIBLE); event_count = atomic_read(&idev->event); @@ -1017,6 +1017,9 @@ void uio_unregister_device(struct uio_info *info) idev->info = NULL; mutex_unlock(&idev->info_lock); + wake_up_interruptible(&idev->wait); + kill_fasync(&idev->async_queue, SIGIO, POLL_HUP); + device_unregister(&idev->dev); return; |