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mei: bus: add reference to bus device in struct mei_cl_client

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Add reference to the bus device (mei_device) for easier access.
To ensures that referencing cldev->bus is valid during cldev life time
we increase the bus ref counter on a client device creation and drop it
on the device release.

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
2015-07-23 15:08:41 +03:00
committed by Greg Kroah-Hartman
parent feb8cd0fe7
commit 512f64d9f7
2 changed files with 20 additions and 0 deletions
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3
include/linux/mei_cl_bus.h
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@@ -6,6 +6,7 @@
#include <linux/mod_devicetable.h>
struct mei_cl_device;
struct mei_device;
typedef void (*mei_cl_event_cb_t)(struct mei_cl_device *device,
u32 events, void *context);
@@ -17,6 +18,7 @@ typedef void (*mei_cl_event_cb_t)(struct mei_cl_device *device,
* Drivers for MEI devices will get an mei_cl_device pointer
* when being probed and shall use it for doing ME bus I/O.
*
* @bus: parent mei device
* @dev: linux driver model device pointer
* @me_cl: me client
* @cl: mei client
@@ -29,6 +31,7 @@ typedef void (*mei_cl_event_cb_t)(struct mei_cl_device *device,
* @priv_data: client private data
*/
struct mei_cl_device {
struct mei_device *bus;
struct device dev;
struct mei_me_client *me_cl;