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mei: connection to fixed address clients from user-space

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This should be used for debug only.
The feaure is gated by "allow_fixed_address" control exposed in debugfs.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Usyskin
2015-05-04 09:43:57 +03:00
committed by Greg Kroah-Hartman
parent 1df629ef4d
commit eeabfcf5a9
3 changed files with 17 additions and 1 deletions
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8
drivers/misc/mei/main.c
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@@ -215,6 +215,11 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
cb = mei_cl_read_cb(cl, file);
if (!cb) {
if (mei_cl_is_fixed_address(cl) && dev->allow_fixed_address) {
cb = mei_cl_read_cb(cl, NULL);
if (cb)
goto copy_buffer;
}
rets = 0;
goto out;
}
@@ -389,7 +394,8 @@ static int mei_ioctl_connect_client(struct file *file,
/* find ME client we're trying to connect to */
me_cl = mei_me_cl_by_uuid(dev, &data->in_client_uuid);
if (!me_cl || me_cl->props.fixed_address) {
if (!me_cl ||
(me_cl->props.fixed_address && !dev->allow_fixed_address)) {
dev_dbg(dev->dev, "Cannot connect to FW Client UUID = %pUl\n",
&data->in_client_uuid);
mei_me_cl_put(me_cl);