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| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2016-12-03 00:15:25 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-12-06 11:05:46 +0100 |
| commit | 076802d0061520bc646ee121fe0f34fce6c55a93 (patch) | |
| tree | 3c17b6372e44c369649691f8c90822bb3f8ea3e0 /include/linux/mei_cl_bus.h | |
| parent | a2eb0fc07f4d4f3b2eb2b1b1b72de738d4b9e003 (diff) | |
| download | lwn-076802d0061520bc646ee121fe0f34fce6c55a93.tar.gz lwn-076802d0061520bc646ee121fe0f34fce6c55a93.zip | |
mei: bus: enable non-blocking RX
Enable non-blocking receive for drivers on mei bus, this allows checking
for data availability by mei client drivers. This is most effective for
fixed address clients, that lacks flow control.
This function adds new API function mei_cldev_recv_nonblock(), it
retuns -EGAIN if function will block.
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>
Diffstat (limited to 'include/linux/mei_cl_bus.h')
| -rw-r--r-- | include/linux/mei_cl_bus.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/mei_cl_bus.h b/include/linux/mei_cl_bus.h index 017f5232b3de..a0d274fe08f1 100644 --- a/include/linux/mei_cl_bus.h +++ b/include/linux/mei_cl_bus.h @@ -75,7 +75,7 @@ void mei_cldev_driver_unregister(struct mei_cl_driver *cldrv); /** * module_mei_cl_driver - Helper macro for registering mei cl driver * - * @__mei_cldrv mei_cl_driver structure + * @__mei_cldrv: mei_cl_driver structure * * Helper macro for mei cl drivers which do not do anything special in module * init/exit, for eliminating a boilerplate code. @@ -86,7 +86,9 @@ void mei_cldev_driver_unregister(struct mei_cl_driver *cldrv); mei_cldev_driver_unregister) ssize_t mei_cldev_send(struct mei_cl_device *cldev, u8 *buf, size_t length); -ssize_t mei_cldev_recv(struct mei_cl_device *cldev, u8 *buf, size_t length); +ssize_t mei_cldev_recv(struct mei_cl_device *cldev, u8 *buf, size_t length); +ssize_t mei_cldev_recv_nonblock(struct mei_cl_device *cldev, u8 *buf, + size_t length); int mei_cldev_register_rx_cb(struct mei_cl_device *cldev, mei_cldev_cb_t rx_cb); int mei_cldev_register_notif_cb(struct mei_cl_device *cldev, |