Commit 154eb18f authored by Tomas Winkler's avatar Tomas Winkler Committed by Greg Kroah-Hartman

mei: use connect_data on the stack

There is no need for dynamic allocation for connect_data.
We can use variable on the stack and make code less
error prone and simple
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4f046e7b
......@@ -433,9 +433,6 @@ static int mei_ioctl_connect_client(struct file *file,
int rets;
cl = file->private_data;
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
dev = cl->dev;
if (dev->dev_state != MEI_DEV_ENABLED) {
......@@ -506,7 +503,6 @@ static int mei_ioctl_connect_client(struct file *file,
return rets;
}
/**
* mei_ioctl - the IOCTL function
*
......@@ -520,7 +516,7 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
{
struct mei_device *dev;
struct mei_cl *cl = file->private_data;
struct mei_connect_client_data *connect_data = NULL;
struct mei_connect_client_data connect_data;
int rets;
......@@ -540,26 +536,19 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
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;
}
if (copy_from_user(connect_data, (char __user *)data,
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");
rets = -EFAULT;
goto out;
}
rets = mei_ioctl_connect_client(file, connect_data);
rets = mei_ioctl_connect_client(file, &connect_data);
if (rets)
goto out;
/* if all is ok, copying the data back to user. */
if (copy_to_user((char __user *)data, connect_data,
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");
rets = -EFAULT;
......@@ -567,13 +556,13 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
}
break;
default:
dev_err(&dev->pdev->dev, ": unsupported ioctl %d.\n", cmd);
rets = -ENOIOCTLCMD;
}
out:
kfree(connect_data);
mutex_unlock(&dev->device_lock);
return rets;
}
......
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