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mei: wake also writers on reset 

wake writers otherwise might have processes waiting
endlessly on wait_tx during reset

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler 2013-07-24 16:22:57 +03:00 committed by Greg Kroah-Hartman
parent cc33c537c1
commit 5290801c23
3 changed files with 9 additions and 5 deletions
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10
drivers/misc/mei/client.c
View File

@ -892,18 +892,22 @@ void mei_cl_all_disconnect(struct mei_device *dev)
/** /**
* mei_cl_all_read_wakeup - wake up all readings so they can be interrupted * mei_cl_all_wakeup - wake up all readers and writers they can be interrupted
* *
* @dev - mei device * @dev - mei device
*/ */
void mei_cl_all_read_wakeup(struct mei_device *dev) void mei_cl_all_wakeup(struct mei_device *dev)
{ {
struct mei_cl *cl, *next; struct mei_cl *cl, *next;
list_for_each_entry_safe(cl, next, &dev->file_list, link) { list_for_each_entry_safe(cl, next, &dev->file_list, link) {
if (waitqueue_active(&cl->rx_wait)) { if (waitqueue_active(&cl->rx_wait)) {
dev_dbg(&dev->pdev->dev, "Waking up client!\n"); dev_dbg(&dev->pdev->dev, "Waking up reading client!\n");
wake_up_interruptible(&cl->rx_wait); wake_up_interruptible(&cl->rx_wait);
} }
if (waitqueue_active(&cl->tx_wait)) {
dev_dbg(&dev->pdev->dev, "Waking up writing client!\n");
wake_up_interruptible(&cl->tx_wait);
}
} }
} }

2
drivers/misc/mei/client.h
View File

@ -99,7 +99,7 @@ void mei_host_client_init(struct work_struct *work);
void mei_cl_all_disconnect(struct mei_device *dev); void mei_cl_all_disconnect(struct mei_device *dev);
void mei_cl_all_read_wakeup(struct mei_device *dev); void mei_cl_all_wakeup(struct mei_device *dev);
void mei_cl_all_write_clear(struct mei_device *dev); void mei_cl_all_write_clear(struct mei_device *dev);
#endif /* _MEI_CLIENT_H_ */ #endif /* _MEI_CLIENT_H_ */

2
drivers/misc/mei/init.c
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@ -196,7 +196,7 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled)
mei_hbm_start_req(dev); mei_hbm_start_req(dev);
/* wake up all readings so they can be interrupted */ /* wake up all readings so they can be interrupted */
mei_cl_all_read_wakeup(dev); mei_cl_all_wakeup(dev);
/* remove all waiting requests */ /* remove all waiting requests */
mei_cl_all_write_clear(dev); mei_cl_all_write_clear(dev);