linux-toradex.git/drivers/misc, branch v4.4.93

cxl: Fix driver use count

2017-10-05T07:41:47+00:00

commit 197267d0356004a31c4d6b6336598f5dff3301e1 upstream.

cxl keeps a driver use count, which is used with the hash memory model
on p8 to know when to upgrade local TLBIs to global and to trigger
callbacks to manage the MMU for PSL8.

If a process opens a context and closes without attaching or fails the
attachment, the driver use count is never decremented. As a
consequence, TLB invalidations remain global, even if there are no
active cxl contexts.

We should increment the driver use count when the process is attaching
to the cxl adapter, and not on open. It's not needed before the
adapter starts using the context and the use count is decremented on
the detach path, so it makes more sense.

It affects only the user api. The kernel api is already doing The
Right Thing.

Signed-off-by: Frederic Barrat 
Fixes: 7bb5d91a4dda ("cxl: Rework context lifetimes")
Acked-by: Andrew Donnellan 
Signed-off-by: Michael Ellerman 
[ajd: backport to stable v4.4 tree]
Signed-off-by: Andrew Donnellan 
Signed-off-by: Greg Kroah-Hartman

mei: me: add lewisburg device ids

2017-08-30T08:19:22+00:00

commit 9ff2007bea1f1bfc53ac0bc7ccf8200bb275fd52 upstream.

Add MEI Lewisburg PCH IDs for Purley based workstations.

Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: me: add broxton pci device ids

2017-08-30T08:19:21+00:00

commit dd16f6cdeb4e02a728863d3cf99aaab352f0d761 upstream.

Add device ids for Broxton SoC based devices.

Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

scsi: ses: do not add a device to an enclosure if enclosure_add_links() fails.

2017-07-27T22:06:04+00:00

commit 62e62ffd95539b9220894a7900a619e0f3ef4756 upstream.

The enclosure_add_device() function should fail if it can't create the
relevant sysfs links.

Signed-off-by: Maurizio Lombardi 
Tested-by: Douglas Miller 
Acked-by: James Bottomley 
Signed-off-by: Martin K. Petersen 
Signed-off-by: Greg Kroah-Hartman

drivers/misc/c2port/c2port-duramar2150.c: checking for NULL instead of IS_ERR()

2017-06-26T05:13:10+00:00

commit 8128a31eaadbcdfa37774bbd28f3f00bac69996a upstream.

c2port_device_register() never returns NULL, it uses error pointers.

Link: http://lkml.kernel.org/r/20170412083321.GC3250@mwanda
Fixes: 65131cd52b9e ("c2port: add c2port support for Eurotech Duramar 2150")
Signed-off-by: Dan Carpenter 
Acked-by: Rodolfo Giometti 
Cc: Greg Kroah-Hartman 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

cxl: Fix error path on bad ioctl

2017-06-14T11:16:24+00:00

commit cec422c11caeeccae709e9942058b6b644ce434c upstream.

Fix error path if we can't copy user structure on CXL_IOCTL_START_WORK
ioctl. We shouldn't unlock the context status mutex as it was not
locked (yet).

Fixes: 0712dc7e73e5 ("cxl: Fix issues when unmapping contexts")
Signed-off-by: Frederic Barrat 
Reviewed-by: Vaibhav Jain 
Reviewed-by: Andrew Donnellan 
Signed-off-by: Michael Ellerman 
Signed-off-by: Greg Kroah-Hartman

mei: bus: fix mei_cldev_enable KDoc

2017-01-12T10:22:47+00:00

commit 5026c9cb0744a9cd40242743ca91a5d712f468c6 upstream.

Adjust function name in KDoc.

Fixes: d49dc5e76fc9 (mei: bus: use mei_cldev_ prefix for the API functions)
Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: request async autosuspend at the end of enumeration

2017-01-09T07:07:47+00:00

commit d5f8e166c25750adc147b0adf64a62a91653438a upstream.

pm_runtime_autosuspend can take synchronous or asynchronous
paths, Because we are calling pm_runtime_mark_last_busy just before
this most of the cases it takes the asynchronous way. However,
when the FW or driver resets during already running runtime suspend,
the call will result in calling to the driver's rpm callback and results
in a deadlock on device_lock.
The simplest fix is to replace pm_runtime_autosuspend with
asynchronous pm_request_autosuspend.

Signed-off-by: Alexander Usyskin 
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman

mei: fix return value on disconnection

2016-12-02T08:09:02+00:00

commit 2d4d5481e2d6f93b25fcfb13a9f20bbfbf54266a upstream.

Correct errno on client disconnection is -ENODEV not -EBUSY

Signed-off-by: Tomas Winkler 
Signed-off-by: Alexander Usyskin 
Signed-off-by: Greg Kroah-Hartman

mei: me: fix place for kaby point device ids.

2016-12-02T08:09:01+00:00

This is fix of the backported patch only, it places
KBL DIDs on correct place to easy on backporting of
further DIDs.

Fixes: 5c99f32c461c ('mei: me: add kaby point device ids')
Signed-off-by: Tomas Winkler 
Signed-off-by: Greg Kroah-Hartman