Adjust socow_iodone() after r254799.

Sponsored by:	The FreeBSD Foundation
Remove unnecessary setup of the m->pkthdr.header pointer.

Sponsored by:	The FreeBSD Foundation
Change m->pkthdr.header to m->pkthdr.PH_loc.ptr after r254804
to transiently store pointers to packet headers.

Sponsored by:	The FreeBSD Foundation
drm: Import Linux commit cd004b3f4cd4169815c82bf9e424fda06978898a

Author: Shirish S <s.shirish@samsung.com>
Date:   Thu Aug 30 07:04:06 2012 +0000

    drm: edid: add support for E-DDC

    The current logic for probing ddc is limited to
    2 blocks (256 bytes), this patch adds support
    for the 4 block (512) data.

    To do this, a single 8-bit segment index is
    passed to the display via the I2C address 30h.
    Data from the selected segment is then immediately
    read via the regular DDC2 address using a repeated
    I2C 'START' signal.

    Signed-off-by: Shirish S <s.shirish@samsung.com>
    Reviewed-by: Jean Delvare <jdelvare@suse.de>
    Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
    Reviewed-by: Ville Syrjala <ville.syrjala@linux.intel.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>
For now limit printf(9) %x of the 64bit pkthdr.csum_flags field to 32bits.
The upper 32bits are not occupied for now.

Sponsored by:	The FreeBSD Foundation
drm: Fix typo in KASSERT message: s/Dandling/Dangling/
drm: Support gem_open_object() and gem_close_object() callbacks

... in struct drm_driver_info.
drm: Call "gem_close_object" driver callback from drm_gem_object_release_handle()

This fixes leakage of "bo_va" for Cayman and following card generations.
drm: In drm_gem_name_create(), verify argument before acquiring lock

Submitted by:	J.R. Oldroyd <jr@opal.com>
MFC
drm: Use DRM_IF_MAJOR & DRM_IF_MINOR from drm_core.h
drm: Import list_for_each_entry_safe_from() macro
Give (*ext_free) an int return value allowing for very sophisticated
external mbuf buffer management capabilities in the future.

For now only EXT_FREE_OK is defined with current legacy behavior.

Sponsored by:	The FreeBSD Foundation
sh: Disallow empty simple commands.

As per POSIX, a simple command must have at least one redirection,
assignment word or command word.

These occured in rare cases such as  eval "f()" .

The extension of allowing no commands inside { }, if, while, for, etc.
remains.
Bump FreeBSD_version after the struct mbuf changes in r254780,
r254799, r254804, r254807, and r254842.

Sponsored by:	The FreeBSD Foundation
Add the unwind information to irq_entry so we can pass through it when
unwinding the stack.
Add the frame information to cpu_switch to allow us to unwind out of it,
for example when dumping threads in the kernel debugger.
drm: Import drm_pcie_get_speed_cap_mask() in drm_pci.c

This comes with several PCI_VENDOR_ID_* defines which should go in a
more central place.
sh: Recognize "--" as end of options in alias builtin.

Aliases starting with "-" (which are non-POSIX) will need to be preceded by
an alias not starting with "-" or the newly added "--".
Fix a >80 character long line, introduced in my previous commit.

Noticed by: hiren