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Date: Tue, 6 Oct 2015 19:17:43 +0300 From: Vlad Zolotarov <vladz@...udius-systems.com> To: linux-kernel@...r.kernel.org, mst@...hat.com, hjk@...sjkoch.de, corbet@....net, gregkh@...uxfoundation.org Cc: bruce.richardson@...el.com, avi@...udius-systems.com, gleb@...udius-systems.com, stephen@...workplumber.org, alexander.duyck@...il.com, Vlad Zolotarov <vladz@...udius-systems.com> Subject: [PATCH v4 1/4] uio: add ioctl support Signed-off-by: Vlad Zolotarov <vladz@...udius-systems.com> --- drivers/uio/uio.c | 15 +++++++++++++++ include/linux/uio_driver.h | 3 +++ 2 files changed, 18 insertions(+) diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index 8196581..714b0e5 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -704,6 +704,20 @@ static int uio_mmap(struct file *filep, struct vm_area_struct *vma) } } +static long uio_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) +{ + struct uio_listener *listener = filep->private_data; + struct uio_device *idev = listener->dev; + + if (!idev->info) + return -EIO; + + if (!idev->info->ioctl) + return -ENOTTY; + + return idev->info->ioctl(idev->info, cmd, arg); +} + static const struct file_operations uio_fops = { .owner = THIS_MODULE, .open = uio_open, @@ -712,6 +726,7 @@ static const struct file_operations uio_fops = { .write = uio_write, .mmap = uio_mmap, .poll = uio_poll, + .unlocked_ioctl = uio_ioctl, .fasync = uio_fasync, .llseek = noop_llseek, }; diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h index 32c0e83..10d7833 100644 --- a/include/linux/uio_driver.h +++ b/include/linux/uio_driver.h @@ -89,6 +89,7 @@ struct uio_device { * @mmap: mmap operation for this uio device * @open: open operation for this uio device * @release: release operation for this uio device + * @ioctl: ioctl handler * @irqcontrol: disable/enable irqs when 0/1 is written to /dev/uioX */ struct uio_info { @@ -105,6 +106,8 @@ struct uio_info { int (*open)(struct uio_info *info, struct inode *inode); int (*release)(struct uio_info *info, struct inode *inode); int (*irqcontrol)(struct uio_info *info, s32 irq_on); + int (*ioctl)(struct uio_info *info, unsigned int cmd, + unsigned long arg); }; extern int __must_check -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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