When stopping the MEI, we should remove and potentially unregister all bus devices queued on the mei_dev linked list.
Signed-off-by: Tomas Winkler <[email protected]> --- drivers/misc/mei/bus.c | 16 ++++++++++++++++ drivers/misc/mei/init.c | 2 ++ drivers/misc/mei/mei_dev.h | 1 + drivers/misc/mei/nfc.c | 8 +------- 4 files changed, 20 insertions(+), 7 deletions(-) diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 4bc7d62..cf4cc0b 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -524,6 +524,22 @@ void mei_cl_bus_rx_event(struct mei_cl *cl) schedule_work(&device->event_work); } +void mei_cl_bus_remove_devices(struct mei_device *dev) +{ + struct mei_cl *cl, *next; + + mutex_lock(&dev->device_lock); + list_for_each_entry_safe(cl, next, &dev->device_list, device_link) { + if (cl->device) + mei_cl_remove_device(cl->device); + + list_del(&cl->device_link); + mei_cl_unlink(cl); + kfree(cl); + } + mutex_unlock(&dev->device_lock); +} + int __init mei_cl_bus_init(void) { return bus_register(&mei_cl_bus_type); diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 214dcef..4460975 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -288,6 +288,8 @@ void mei_stop(struct mei_device *dev) mei_nfc_host_exit(dev); + mei_cl_bus_remove_devices(dev); + mutex_lock(&dev->device_lock); mei_wd_stop(dev); diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 49bf2cf..c59c56b 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -296,6 +296,7 @@ int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length); int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length); int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length); void mei_cl_bus_rx_event(struct mei_cl *cl); +void mei_cl_bus_remove_devices(struct mei_device *dev); int mei_cl_bus_init(void); void mei_cl_bus_exit(void); diff --git a/drivers/misc/mei/nfc.c b/drivers/misc/mei/nfc.c index a58320c..7626dde 100644 --- a/drivers/misc/mei/nfc.c +++ b/drivers/misc/mei/nfc.c @@ -552,13 +552,7 @@ err: void mei_nfc_host_exit(struct mei_device *dev) { struct mei_nfc_dev *ndev = &nfc_dev; - cancel_work_sync(&ndev->init_work); +} - mutex_lock(&dev->device_lock); - if (ndev->cl && ndev->cl->device) - mei_cl_remove_device(ndev->cl->device); - mei_nfc_free(ndev); - mutex_unlock(&dev->device_lock); -} -- 1.8.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
