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mei: disconnect on connection request timeout

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For the FW with  HBM version >= 2.0 we don't need to reset the whole
device in case of a particular client failing to connect, it is enough
to send disconnect a request to bring the device to the stable state.

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
2015-07-23 21:37:13 +03:00
committed by Greg Kroah-Hartman
parent 70ef835c84
commit 18901357e7
6 changed files with 95 additions and 29 deletions
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20
drivers/misc/mei/interrupt.c
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@@ -424,6 +424,24 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list)
EXPORT_SYMBOL_GPL(mei_irq_write_handler);
/**
* mei_connect_timeout - connect/disconnect timeouts
*
* @cl: host client
*/
static void mei_connect_timeout(struct mei_cl *cl)
{
struct mei_device *dev = cl->dev;
if (cl->state == MEI_FILE_CONNECTING) {
if (dev->hbm_f_dot_supported) {
cl->state = MEI_FILE_DISCONNECT_REQUIRED;
wake_up(&cl->wait);
return;
}
}
mei_reset(dev);
}
/**
* mei_timer - timer function.
@@ -464,7 +482,7 @@ void mei_timer(struct work_struct *work)
if (cl->timer_count) {
if (--cl->timer_count == 0) {
dev_err(dev->dev, "timer: connect/disconnect timeout.\n");
mei_reset(dev);
mei_connect_timeout(cl);
goto out;
}
}