diff options
author | 2017-03-08 23:13:28 -0800 | |
---|---|---|
committer | 2017-03-08 23:36:15 -0800 | |
commit | 52f993b8e89487ec9ee15a7fb4979e0f09a45b27 (patch) | |
tree | d65304486afe0bea4a311c783c0d72791c8c0aa2 /kernel/drivers/misc/mei/bus.c | |
parent | c189ccac5702322ed843fe17057035b7222a59b6 (diff) |
Upgrade to 4.4.50-rt62
The current kernel is based on rt kernel v4.4.6-rt14. We will upgrade it
to 4.4.50-rt62.
The command to achieve it is:
a) Clone a git repo from
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
b) Get the diff between this two changesets:
git diff 640eca2901f3435e616157b11379d3223a44b391
705619beeea1b0b48219a683fd1a901a86fdaf5e
where the two commits are:
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
640eca2901f3435e616157b11379d3223a44b391
640eca2901f3 v4.4.6-rt14
localversion-rt
[yjiang5@jnakajim-build linux-stable-rt]$ git show --oneline --name-only
705619beeea1b0b48219a683fd1a901a86fdaf5e
705619beeea1 Linux 4.4.50-rt62
localversion-rt
c) One patch has been backported thus revert the patch before applying.
filterdiff -p1 -x scripts/package/Makefile
~/tmp/v4.4.6-rt14-4.4.50-rt62.diff |patch -p1 --dry-run
Upstream status: backport
Change-Id: I244d57a32f6066e5a5b9915f9fbf99e7bbca6e01
Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/drivers/misc/mei/bus.c')
-rw-r--r-- | kernel/drivers/misc/mei/bus.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/kernel/drivers/misc/mei/bus.c b/kernel/drivers/misc/mei/bus.c index 0b05aa938..be74a2570 100644 --- a/kernel/drivers/misc/mei/bus.c +++ b/kernel/drivers/misc/mei/bus.c @@ -53,6 +53,11 @@ ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length, bus = cl->dev; mutex_lock(&bus->device_lock); + if (bus->dev_state != MEI_DEV_ENABLED) { + rets = -ENODEV; + goto out; + } + if (!mei_cl_is_connected(cl)) { rets = -ENODEV; goto out; @@ -109,6 +114,10 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) bus = cl->dev; mutex_lock(&bus->device_lock); + if (bus->dev_state != MEI_DEV_ENABLED) { + rets = -ENODEV; + goto out; + } cb = mei_cl_read_cb(cl, NULL); if (cb) @@ -135,7 +144,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length) mutex_lock(&bus->device_lock); if (!mei_cl_is_connected(cl)) { - rets = -EBUSY; + rets = -ENODEV; goto out; } } @@ -213,17 +222,23 @@ EXPORT_SYMBOL_GPL(mei_cldev_recv); static void mei_cl_bus_event_work(struct work_struct *work) { struct mei_cl_device *cldev; + struct mei_device *bus; cldev = container_of(work, struct mei_cl_device, event_work); + bus = cldev->bus; + if (cldev->event_cb) cldev->event_cb(cldev, cldev->events, cldev->event_context); cldev->events = 0; /* Prepare for the next read */ - if (cldev->events_mask & BIT(MEI_CL_EVENT_RX)) + if (cldev->events_mask & BIT(MEI_CL_EVENT_RX)) { + mutex_lock(&bus->device_lock); mei_cl_read_start(cldev->cl, 0, NULL); + mutex_unlock(&bus->device_lock); + } } /** @@ -287,6 +302,7 @@ int mei_cldev_register_event_cb(struct mei_cl_device *cldev, unsigned long events_mask, mei_cldev_event_cb_t event_cb, void *context) { + struct mei_device *bus = cldev->bus; int ret; if (cldev->event_cb) @@ -299,15 +315,17 @@ int mei_cldev_register_event_cb(struct mei_cl_device *cldev, INIT_WORK(&cldev->event_work, mei_cl_bus_event_work); if (cldev->events_mask & BIT(MEI_CL_EVENT_RX)) { + mutex_lock(&bus->device_lock); ret = mei_cl_read_start(cldev->cl, 0, NULL); + mutex_unlock(&bus->device_lock); if (ret && ret != -EBUSY) return ret; } if (cldev->events_mask & BIT(MEI_CL_EVENT_NOTIF)) { - mutex_lock(&cldev->cl->dev->device_lock); + mutex_lock(&bus->device_lock); ret = mei_cl_notify_request(cldev->cl, NULL, event_cb ? 1 : 0); - mutex_unlock(&cldev->cl->dev->device_lock); + mutex_unlock(&bus->device_lock); if (ret) return ret; } @@ -381,7 +399,7 @@ bool mei_cldev_enabled(struct mei_cl_device *cldev) EXPORT_SYMBOL_GPL(mei_cldev_enabled); /** - * mei_cldev_enable_device - enable me client device + * mei_cldev_enable - enable me client device * create connection with me client * * @cldev: me client device |