linux-toradex.git/drivers/s390/char, branch v3.11

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-07-04T18:40:58+00:00

Pull trivial tree updates from Jiri Kosina:
 "The usual stuff from trivial tree"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits)
  treewide: relase -> release
  Documentation/cgroups/memory.txt: fix stat file documentation
  sysctl/net.txt: delete reference to obsolete 2.4.x kernel
  spinlock_api_smp.h: fix preprocessor comments
  treewide: Fix typo in printk
  doc: device tree: clarify stuff in usage-model.txt.
  open firmware: "/aliasas" -> "/aliases"
  md: bcache: Fixed a typo with the word 'arithmetic'
  irq/generic-chip: fix a few kernel-doc entries
  frv: Convert use of typedef ctl_table to struct ctl_table
  sgi: xpc: Convert use of typedef ctl_table to struct ctl_table
  doc: clk: Fix incorrect wording
  Documentation/arm/IXP4xx fix a typo
  Documentation/networking/ieee802154 fix a typo
  Documentation/DocBook/media/v4l fix a typo
  Documentation/video4linux/si476x.txt fix a typo
  Documentation/virtual/kvm/api.txt fix a typo
  Documentation/early-userspace/README fix a typo
  Documentation/video4linux/soc-camera.txt fix a typo
  lguest: fix CONFIG_PAE -> CONFIG_x86_PAE in comment
  ...

treewide: relase -> release

2013-06-28T12:34:33+00:00

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Jiri Kosina

s390/vmwatchdog: do not use static data

2013-06-26T19:10:29+00:00

Using static data for fields which are accessed by HW will fail if
the driver is build as a module (since this would be vmalloc'ed
memory). This Bug was revealed via
"s390: remove virt_to_phys implementation" - the old virt_to_phys
implementation would have translated the address but it was not
guaranteed that the memory was contiguous.

Fix it by putting the data on the stack.

Signed-off-by: Sebastian Ott 
Reviewed-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/sclp: remove duplicated include from sclp_ctl.c

2013-06-26T19:10:24+00:00

Remove duplicated include.

Signed-off-by: Wei Yongjun 
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/drivers: Cocci spatch "ptr_ret.spatch"

2013-06-26T19:10:22+00:00

Signed-off-by: Thomas Meyer 
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/sclp: Add SCLP character device driver

2013-06-26T19:10:13+00:00

Add a character misc device "sclp_ctl" that allows to run SCCBs
from user space using the SCLP_CTL_SCCB ioctl.

Signed-off-by: Michael Holzheu 
Signed-off-by: Martin Schwidefsky

s390/sclp: add parameter to specify number of buffer pages

2013-06-26T19:10:03+00:00

Add a kernel parameter to be able to specify the number of pages to be
used as output buffer by the line-mode sclp driver and the vt220 sclp
driver. The current number of output pages is 6, if the service element
is unavailable the boot messages alone can fill up the output buffer.
If this happens the system blocks until the service element is working
again. For a large LPAR with many devices it is sensible to have the
ability to increase the output buffer size. To help to debug this
situation add a counter for the page-pool-empty situation and make it
available as a sclp driver attribute.
To avoid the system to stall until the service element works again
add another kernel parameter to allow to drop output buffers.

Signed-off-by: Martin Schwidefsky

s390/memory hotplug,sclp: get rid of per memory increment usecount

2013-05-02T13:50:28+00:00

Given that the memory block size is always larger or equal to
the memory increment size there is no need for a usecount anymore.
Each memory increment belongs to exactly one memory block.
So get rid of the usecount.

Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/mem_detect: limit memory detection loop to "mem=" parameter

2013-05-02T13:50:26+00:00

The current memory detection loop will detect all present memory of
a machine. This is true even if the user specified the "mem=" parameter
on the kernel command line.
This can be a problem since the memory detection may cause a fully
populated host page table for the guest, even for those parts of the
memory that the guest will never use afterwards.

So fix this and only detect memory up to a user supplied "mem=" limit
if specified.

Reported-by: Michael Johanssen 
Reviewed-by: Michael Holzheu 
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky

s390/zcore: calculate real memory size using own get_mem_size function

2013-05-02T13:50:23+00:00

The zcore device driver makes use of the global visible real_memory_size
variable with its odd semantics.
Since the zcore device driver already has code in place which calculates
the memory size at module load time, use that code to calculate the current
memory end value.

One user less of the odd real_memory_size variable.

Reviewed-by: Michael Holzheu 
Signed-off-by: Heiko Carstens 
Signed-off-by: Martin Schwidefsky