Commit 46e0cd87 authored by Tomas Winkler's avatar Tomas Winkler Committed by Greg Kroah-Hartman

mei: fix out of array access to me clients array

The patch 9f81abda: "mei: implement mei_cl_connect function"
from Jan 8, 2013, leads to the following static checker warning:
"drivers/misc/mei/main.c:522 mei_ioctl_connect_client()
	 warn: check 'dev->me_clients[]' for negative offsets (-2)"
Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 221ba151
......@@ -489,10 +489,15 @@ static int mei_ioctl_connect_client(struct file *file,
/* find ME client we're trying to connect to */
i = mei_me_cl_by_uuid(dev, &data->in_client_uuid);
if (i >= 0 && !dev->me_clients[i].props.fixed_address) {
if (i < 0 || dev->me_clients[i].props.fixed_address) {
dev_dbg(&dev->pdev->dev, "Cannot connect to FW Client UUID = %pUl\n",
&data->in_client_uuid);
rets = -ENODEV;
goto end;
}
cl->me_client_id = dev->me_clients[i].client_id;
cl->state = MEI_FILE_CONNECTING;
}
dev_dbg(&dev->pdev->dev, "Connect to FW Client ID = %d\n",
cl->me_client_id);
......@@ -527,11 +532,6 @@ static int mei_ioctl_connect_client(struct file *file,
goto end;
}
if (cl->state != MEI_FILE_CONNECTING) {
rets = -ENODEV;
goto end;
}
/* prepare the output buffer */
client = &data->out_client_properties;
......@@ -543,7 +543,6 @@ static int mei_ioctl_connect_client(struct file *file,
rets = mei_cl_connect(cl, file);
end:
dev_dbg(&dev->pdev->dev, "free connect cb memory.");
return rets;
}
......
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