diff options
Diffstat (limited to 'drivers/uio')
| -rw-r--r-- | drivers/uio/uio.c | 19 | ||||
| -rw-r--r-- | drivers/uio/uio_fsl_elbc_gpcm.c | 6 |
2 files changed, 13 insertions, 12 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; diff --git a/drivers/uio/uio_fsl_elbc_gpcm.c b/drivers/uio/uio_fsl_elbc_gpcm.c index 9cc37fe07d35..0ee3cd3c25ee 100644 --- a/drivers/uio/uio_fsl_elbc_gpcm.c +++ b/drivers/uio/uio_fsl_elbc_gpcm.c @@ -74,8 +74,7 @@ DEVICE_ATTR(reg_or, S_IRUGO|S_IWUSR|S_IWGRP, reg_show, reg_store); static ssize_t reg_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct platform_device *pdev = to_platform_device(dev); - struct uio_info *info = platform_get_drvdata(pdev); + struct uio_info *info = dev_get_drvdata(dev); struct fsl_elbc_gpcm *priv = info->priv; struct fsl_lbc_bank *bank = &priv->lbc->bank[priv->bank]; @@ -94,8 +93,7 @@ static ssize_t reg_show(struct device *dev, struct device_attribute *attr, static ssize_t reg_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct platform_device *pdev = to_platform_device(dev); - struct uio_info *info = platform_get_drvdata(pdev); + struct uio_info *info = dev_get_drvdata(dev); struct fsl_elbc_gpcm *priv = info->priv; struct fsl_lbc_bank *bank = &priv->lbc->bank[priv->bank]; unsigned long val; |