linux-toradex.git/drivers/pci/proc.c, branch v4.10

Replace with globally

2016-12-24T19:46:01+00:00

This was entirely automated, using the script by Al:

  PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*'
  sed -i -e "s!$PATT!#include !" \
        $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h)

to do the replacement at the end of the merge window.

Requested-by: Al Viro 
Signed-off-by: Linus Torvalds

PCI: Ignore write combining when mapping I/O port space

2016-06-17T19:43:33+00:00

PCI exposes files like /proc/bus/pci/00/00.0 in procfs.  These files
support operations like this:

  ioctl(fd, PCIIOC_MMAP_IS_IO);           # request I/O port space
  ioctl(fd, PCIIOC_WRITE_COMBINE, 1);     # request write-combining
  mmap(fd, ...)

Write combining is useful on PCI memory space, but I don't think it makes
sense on PCI I/O port space.

We *could* change proc_bus_pci_ioctl() to make it impossible to set
mmap_state == pci_mmap_io and write_combine at the same time, but that
would break the following sequence, which is currently legal:

  mmap(fd, ...)                           # default is I/O, non-combining
  ioctl(fd, PCIIOC_WRITE_COMBINE, 1);     # request write-combining
  ioctl(fd, PCIIOC_MMAP_IS_MEM);          # request memory space
  mmap(fd, ...)                           # get write-combining mapping

Ignore the write-combining flag when mapping I/O port space.

This patch should have no functional effect, based on this analysis of all
implementations of pci_mmap_page_range():

  - ia64 mips parisc sh unicore32 x86 do not support mapping of I/O port
    space at all.

  - arm cris microblaze mn10300 sparc xtensa support mapping of I/O port
    space, but ignore the write_combine argument to pci_mmap_page_range().

  - powerpc supports mapping of I/O port space and uses write_combine, and
    it disables write combining for I/O port space in
    __pci_mmap_set_pgprot().

This patch makes it possible to remove __pci_mmap_set_pgprot() from
powerpc, which simplifies that path.

Signed-off-by: Bjorn Helgaas

PCI: Whitespace cleanup

2014-06-11T02:20:19+00:00

Fix various whitespace errors.

No functional change.

[bhelgaas: fix other similar problems]
Signed-off-by: Ryan Desfosses 
Signed-off-by: Bjorn Helgaas

PCI: Fix whitespace, capitalization, and spelling errors

2013-11-14T18:28:18+00:00

Fix whitespace, capitalization, and spelling errors.  No functional change.
I know "busses" is not an error, but "buses" was more common, so I used it
consistently.

Signed-off-by: Marta Rybczynska  (pci_reset_bridge_secondary_bus())
Signed-off-by: Bjorn Helgaas 
Acked-by: Rafael J. Wysocki

pci/proc: switch to fixed_size_llseek()

2013-06-29T08:57:48+00:00

Signed-off-by: Al Viro

proc: Supply a function to remove a proc entry by PDE

2013-05-01T21:29:46+00:00

Supply a function (proc_remove()) to remove a proc entry (and any subtree
rooted there) by proc_dir_entry pointer rather than by name and (optionally)
root dir entry pointer.  This allows us to eliminate all remaining pde->name
accesses outside of procfs.

Signed-off-by: David Howells 
Acked-by: Grant Likely 
cc: linux-acpi@vger.kernel.org
cc: openipmi-developer@lists.sourceforge.net
cc: devicetree-discuss@lists.ozlabs.org
cc: linux-pci@vger.kernel.org
cc: netdev@vger.kernel.org
cc: netfilter-devel@vger.kernel.org
cc: alsa-devel@alsa-project.org
Signed-off-by: Al Viro

proc: Supply PDE attribute setting accessor functions

2013-05-01T21:29:18+00:00

Supply accessor functions to set attributes in proc_dir_entry structs.

The following are supplied: proc_set_size() and proc_set_user().

Signed-off-by: David Howells 
Acked-by: Mauro Carvalho Chehab 
cc: linuxppc-dev@lists.ozlabs.org
cc: linux-media@vger.kernel.org
cc: netdev@vger.kernel.org
cc: linux-wireless@vger.kernel.org
cc: linux-pci@vger.kernel.org
cc: netfilter-devel@vger.kernel.org
cc: alsa-devel@alsa-project.org
Signed-off-by: Al Viro

procfs: new helper - PDE_DATA(inode)

2013-04-09T18:13:32+00:00

The only part of proc_dir_entry the code outside of fs/proc
really cares about is PDE(inode)->data.  Provide a helper
for that; static inline for now, eventually will be moved
to fs/proc, along with the knowledge of struct proc_dir_entry
layout.

Signed-off-by: Al Viro

new helper: file_inode(file)

2013-02-23T04:31:31+00:00

Signed-off-by: Al Viro

PCI/PM: Fix proc config reg access for D3cold and bridge suspending

2012-11-05T17:46:23+00:00

In https://bugzilla.kernel.org/show_bug.cgi?id=48981
Peter reported that /proc/bus/pci/??/??.? does not work for 3.6.
This is because the device configuration space registers are
not accessible if the corresponding parent bridge is suspended or
the device is put into D3cold state.

This is the same as /sys/bus/pci/devices/0000:??:??.?/config access
issue.  So the function used to solve sysfs issue is used to solve
this issue.

This patch moves pci_config_pm_runtime_get()/_put() from pci/pci-sysfs.c
to pci/pci.c and makes them extern so they can be used by both the
sysfs and proc paths.

[bhelgaas: changelog, references, reporters]
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=48981
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=49031
Reported-by: Forrest Loomis 
Reported-by: Peter 
Reported-by: Micael Dias 
Signed-off-by: Huang Ying 
Signed-off-by: Bjorn Helgaas 
Acked-by: Rafael J. Wysocki 
CC: stable@vger.kernel.org		# v3.6+