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| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2020-08-18 14:51:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-18 16:44:43 +0300 |
| commit | d1376f3d89d5177dae7cae40f3f9fdf73e9bfec9 (patch) | |
| tree | 045c2bcecb3c06c27ac7793af635da0de5ce5d2a /drivers/misc/mei/mei_dev.h | |
| parent | 74a9c967aaf6cd1314ef371678f889ad9fcedb2c (diff) | |
| download | linux-d1376f3d89d5177dae7cae40f3f9fdf73e9bfec9.tar.xz | |
mei: add a spin lock to protect rd_completed queue
In order to support vtags we need to access read completed
queue out of driver big lock.
Add a spin lock to protect rd_completed queue.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20200818115147.2567012-7-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/mei_dev.h')
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index fefa5b53a6d0..1219edea3243 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -217,6 +217,7 @@ struct mei_cl_cb { * @tx_cb_queued: number of tx callbacks in queue * @writing_state: state of the tx * @rd_pending: pending read credits + * @rd_completed_lock: protects rd_completed queue * @rd_completed: completed read * * @cldev: device on the mei client bus @@ -242,6 +243,7 @@ struct mei_cl { u8 tx_cb_queued; enum mei_file_transaction_states writing_state; struct list_head rd_pending; + spinlock_t rd_completed_lock; /* protects rd_completed queue */ struct list_head rd_completed; struct mei_cl_device *cldev; |