diff options
| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2020-08-18 14:51:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-18 15:44:43 +0200 |
| commit | d1376f3d89d5177dae7cae40f3f9fdf73e9bfec9 (patch) | |
| tree | 045c2bcecb3c06c27ac7793af635da0de5ce5d2a /drivers/misc/mei/bus.c | |
| parent | 74a9c967aaf6cd1314ef371678f889ad9fcedb2c (diff) | |
| download | linux-d1376f3d89d5177dae7cae40f3f9fdf73e9bfec9.tar.bz2 | |
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/bus.c')
| -rw-r--r-- | drivers/misc/mei/bus.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 2e7ac53a4152..fc20a0da5c24 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -152,7 +152,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length, if (timeout) { rets = wait_event_interruptible_timeout (cl->rx_wait, - (!list_empty(&cl->rd_completed)) || + mei_cl_read_cb(cl, NULL) || (!mei_cl_is_connected(cl)), msecs_to_jiffies(timeout)); if (rets == 0) @@ -165,7 +165,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length, } else { if (wait_event_interruptible (cl->rx_wait, - (!list_empty(&cl->rd_completed)) || + mei_cl_read_cb(cl, NULL) || (!mei_cl_is_connected(cl)))) { if (signal_pending(current)) return -EINTR; @@ -198,7 +198,7 @@ copy: rets = r_length; free: - mei_io_cb_free(cb); + mei_cl_del_rd_completed(cl, cb); out: mutex_unlock(&bus->device_lock); |