diff options
| -rw-r--r-- | drivers/uio/uio.c | 14 | ||||
| -rw-r--r-- | include/linux/uio_driver.h | 2 |
2 files changed, 8 insertions, 8 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index 8132288..0fd2cda 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -512,7 +512,7 @@ static unsigned int uio_poll(struct file *filep, poll_table *wait) struct uio_listener *listener = filep->private_data; struct uio_device *idev = listener->dev; - if (idev->info->irq == UIO_IRQ_NONE) + if (!idev->info->irq) return -EIO; poll_wait(filep, &idev->wait, wait); @@ -530,7 +530,7 @@ static ssize_t uio_read(struct file *filep, char __user *buf, ssize_t retval; s32 event_count; - if (idev->info->irq == UIO_IRQ_NONE) + if (!idev->info->irq) return -EIO; if (count != sizeof(s32)) @@ -578,7 +578,7 @@ static ssize_t uio_write(struct file *filep, const char __user *buf, ssize_t retval; s32 irq_on; - if (idev->info->irq == UIO_IRQ_NONE) + if (!idev->info->irq) return -EIO; if (count != sizeof(s32)) @@ -825,9 +825,9 @@ int __uio_register_device(struct module *owner, info->uio_dev = idev; - if (idev->info->irq >= 0) { - ret = request_irq(idev->info->irq, uio_interrupt, - idev->info->irq_flags, idev->info->name, idev); + if (info->irq && (info->irq != UIO_IRQ_CUSTOM)) { + ret = request_irq(info->irq, uio_interrupt, + info->irq_flags, info->name, idev); if (ret) goto err_request_irq; } @@ -863,7 +863,7 @@ void uio_unregister_device(struct uio_info *info) uio_free_minor(idev); - if (info->irq >= 0) + if (info->irq && (info->irq != UIO_IRQ_CUSTOM)) free_irq(info->irq, idev); uio_dev_del_attributes(idev); diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h index 5dcc9ff..d6188e5 100644 --- a/include/linux/uio_driver.h +++ b/include/linux/uio_driver.h @@ -108,7 +108,7 @@ extern void uio_event_notify(struct uio_info *info); /* defines for uio_info->irq */ #define UIO_IRQ_CUSTOM -1 -#define UIO_IRQ_NONE -2 +#define UIO_IRQ_NONE 0 /* defines for uio_mem->memtype */ #define UIO_MEM_NONE 0 |