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Commit 4f046e7b authored by Tomas Winkler's avatar Tomas Winkler Committed by Greg Kroah-Hartman
Browse files

mei: enable adding more IOCTL handlers 



Handle ioctls in a switch statement so we can
add more commands easily

Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent bae1cc7d

drivers/misc/mei/main.c

+28 −25
Original line number Diff line number Diff line
@@ -523,8 +523,6 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data) 
	struct mei_connect_client_data *connect_data = NULL;

	int rets;



	if (cmd != IOCTL_MEI_CONNECT_CLIENT)

		return -EINVAL;



	if (WARN_ON(!cl || !cl->dev))

		return -ENODEV;
@@ -539,15 +537,16 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data) 
		goto out;

	}



	switch (cmd) {

	case IOCTL_MEI_CONNECT_CLIENT:

		dev_dbg(&dev->pdev->dev, ": IOCTL_MEI_CONNECT_CLIENT.\n");



		connect_data = kzalloc(sizeof(struct mei_connect_client_data),

							GFP_KERNEL);

		if (!connect_data) {

			rets = -ENOMEM;

			goto out;

		}

	dev_dbg(&dev->pdev->dev, "copy connect data from user\n");



		if (copy_from_user(connect_data, (char __user *)data,

				sizeof(struct mei_connect_client_data))) {

			dev_dbg(&dev->pdev->dev, "failed to copy data from userland\n");
@@ -556,12 +555,10 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data) 
		}



		rets = mei_ioctl_connect_client(file, connect_data);



	/* if all is ok, copying the data back to user. */

		if (rets)

			goto out;



	dev_dbg(&dev->pdev->dev, "copy connect data to user\n");

		/* if all is ok, copying the data back to user. */

		if (copy_to_user((char __user *)data, connect_data,

				sizeof(struct mei_connect_client_data))) {

			dev_dbg(&dev->pdev->dev, "failed to copy data to userland\n");
@@ -569,6 +566,12 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data) 
			goto out;

		}



		break;

	default:

		dev_err(&dev->pdev->dev, ": unsupported ioctl %d.\n", cmd);

		rets = -ENOIOCTLCMD;

	}



out:

	kfree(connect_data);

	mutex_unlock(&dev->device_lock);