linux-toradex.git/drivers/hv/vmbus_drv.c, branch v3.4.100

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

2014-06-07T23:02:10+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 
[hq: Backported to 3.4:
 - Add the change in hv_ringbuffer_read]
Signed-off-by: Qiang Huang 
Signed-off-by: Greg Kroah-Hartman

Drivers:hv: Fix a bug in vmbus_driver_unregister()

2012-01-05T00:14:44+00:00

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 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Make the vmbus driver unloadable

2011-12-12T22:26:50+00:00

It turns out that the vmbus driver can be made unloadable. Make it
unloadable.

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

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

2011-12-10T00:23:49+00:00

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 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

Staging: hv: vmbus: Support building the vmbus driver as part of the kernel

2011-11-27T01:05:34+00:00

Modify the way we initialize the vmbus driver so that all the hyper-v drivers
can be linked with the kernel and still ensure that the vmbus driver
is fully initialized before the drivers that depend upon the vmbus
driver attempt to initialize.

Signed-off-by: K. Y. Srinivasan 
Signed-off-by: Haiyang Zhang 
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

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

Staging: hv: remove unneeded asm include file in hyperv.h

2011-10-11T14:49:19+00:00

No one outside of the hyperv core needs to include the asm/hyperv.h
file, so don't put it in the "global" include/linux/hyperv.h file.

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

Staging: hv: move hyperv code out of staging directory

2011-10-11T04:52:55+00:00

After many years wandering the desert, it is finally time for the
Microsoft HyperV code to move out of the staging directory.  Or at least
the core hyperv bus code, and the utility driver, the rest still have
some review to get through by the various subsystem maintainers.

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