linux-toradex.git/drivers/hv, branch v3.2.60

drivers: hv: additional switch to use mb() instead of smp_mb()

2014-04-30T15:23:27+00:00

commit e4af376d04b0(drivers: hv: switch to use mb() instead of smp_mb()),
the adjustment mistakenly dropped the change in hv_ringbuffer_read,
so add it.

Signed-off-by: Qiang Huang 
Signed-off-by: Ben Hutchings

Drivers: hv: vmbus: Don't timeout during the initial connection with host

2014-04-01T23:58:49+00:00

commit 269f979467cf49f2ea8132316c1f00f8c9678f7c upstream.

When the guest attempts to connect with the host when there may already be a
connection with the host (as would be the case during the kdump/kexec path),
it is difficult to guarantee timely response from the host. Starting with
WS2012 R2, the host supports this ability to re-connect with the host
(explicitly to support kexec). Prior to responding to the guest, the host
needs to ensure that device states based on the previous connection to
the host have been properly torn down. This may introduce unbounded delays.
To deal with this issue, don't do a timed wait during the initial connect
with the host.

Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman 
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings

drivers: hv: switch to use mb() instead of smp_mb()

2013-07-27T04:34:12+00:00

commit 35848f68b07df3f917cb13fc3c134718669f569b upstream.

Even if guest were compiled without SMP support, it could not assume that host
wasn't. So switch to use mb() instead of smp_mb() to force memory barriers for
UP guest.

Signed-off-by: Jason Wang 
Cc: Haiyang Zhang 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman 
[bwh: Backported to 3.2:
 - Drop changes to functions that don't exist here
 - hv_ringbuffer_write() has only a write memory barrier]
Signed-off-by: Ben Hutchings

NLS: improve UTF8 -> UTF16 string conversion routine

2013-03-20T15:03:41+00:00

commit 0720a06a7518c9d0c0125bd5d1f3b6264c55c3dd upstream.

The utf8s_to_utf16s conversion routine needs to be improved.  Unlike
its utf16s_to_utf8s sibling, it doesn't accept arguments specifying
the maximum length of the output buffer or the endianness of its
16-bit output.

This patch (as1501) adds the two missing arguments, and adjusts the
only two places in the kernel where the function is called.  A
follow-on patch will add a third caller that does utilize the new
capabilities.

The two conversion routines are still annoyingly inconsistent in the
way they handle invalid byte combinations.  But that's a subject for a
different patch.

Signed-off-by: Alan Stern 
CC: Clemens Ladisch 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Ben Hutchings

Drivers: hv: Cleanup error handling in vmbus_open()

2012-10-30T23:26:59+00:00

commit 1392550240aaa72ce3a094a38bd23525cd67ce60 upstream.

Fix a memory leak  in the error handling path in the function vmbus_open().

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
Reported-by: Jason Wang 
Acked-by: Jason Wang 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Ben Hutchings

Drivers:hv: Fix a bug in vmbus_driver_unregister()

2012-01-12T19:29:33+00:00

commit 8f257a142fc3868d69de3f996b95d7bdbc509560 upstream.

The function vmbus_exists() was introduced recently to deal with cases where
the vmbus driver failed to initialize and yet other Hyper-V drivers attempted
to register with the vmbus bus driver. This patch introduced a bug where
vmbus_driver_unregister() would fail to unregister the driver. This patch
fixes the problem.

Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Fuzhou Chen 
Cc: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

drivers: hv: Don't OOPS when you cannot init vmbus

2012-01-12T19:29:32+00:00

commit cf6a2eacbcb2593b5b91d0817915c4f0464bb534 upstream.

The hv vmbus driver was causing an OOPS since it was trying to register drivers
on top of the bus even if initialization of the bus has failed for some
reason (such as the odd chance someone would run a hv enabled kernel in a
non-hv environment).

Signed-off-by: Sasha Levin 
Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

hv: remove struct hv_device_info from hyperv.h

2011-10-11T15:51:22+00:00

This is only used/needed by the vmbus core code, so move it out of the
hyperv.h file and into the .c file that uses it.

Signed-off-by: Greg Kroah-Hartman

hv: remove free_channel() from hyperv.h

2011-10-11T15:51:22+00:00

This function is only used in the file it is declared in
(channel_mgmt.c) so make it static and remove it from the hyperv.h file.

Cc: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman

Staging: hv: remove vmbus_loglevel as it is not used at all anymore

2011-10-11T15:51:21+00:00

As there is no user of this variable, it's time to delete it.  For
dynamic debugging of the hyperv code, use the standard dynamic debug
kernel interface.

Cc: K. Y. Srinivasan 
Signed-off-by: Greg Kroah-Hartman