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  1. 11 Aug, 2008 11 commits
    • Linus Torvalds's avatar
      Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc · e2205a15
      Linus Torvalds authored 
      * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  powerpc: Remove include/linux/harrier_defs.h
  powerpc: Do not ignore arch/powerpc/include
  powerpc: Delete completed "ppc removal" task from feature removal file
  powerpc/mm: Fix attribute confusion with htab_bolt_mapping()
  powerpc/pci: Don't keep ISA memory hole resources in the tree
  powerpc: Zero fill the return values of rtas argument buffer
  powerpc/4xx: Update defconfig files for 2.6.27-rc1
  powerpc/44x: Incorrect NOR offset in Warp DTS
  powerpc/44x: Warp DTS changes for board updates
  powerpc/4xx: Cleanup Warp for i2c driver changes.
  powerpc/44x: Adjust warp-nand resource end address
      e2205a15
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 · a7ef6a40
      Linus Torvalds authored 
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: Limit VPD length for Broadcom 5708S
  PCI PM: Export pci_pme_active to drivers
  PCI: remove duplicate symbol from pci_ids.h
  PCI: check the return value of device_create_bin_file() in pci_create_bus()
  PCI: fully restore MSI state at resume time
  DMA: make dma-coherent.c documentation kdoc-friendly
  PCI: make pci_register_driver() a macro
  PCI: add Broadcom 5708S to VPD length quirk
      a7ef6a40
    • Christian Borntraeger's avatar
      Fix race/oops in tty layer after BKL pushdown · 000b9151
      Christian Borntraeger authored 
      While testing our KVM code for s390 (starting and killall kvm in a loop)
I can reproduce the following oops:

  Unable to handle kernel pointer dereference at virtual kernel address 6b6b6b6b6b6b6000 Oops: 0038 [#1] SMP
  Modules linked in: dm_multipath sunrpc qeth_l3 qeth_l2 dm_mod qeth
  ccwgroup CPU: 1 Not tainted 2.6.27-rc1 #54
  Process kuli (pid: 4409, task: 00000000b6aa5940, ksp: 00000000b7343e10)
  Krnl PSW : 0704e00180000000 00000000002e0b8c
  (disassociate_ctty+0x1c0/0x288) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3
  CC:2 PM:0 EA:3 Krnl GPRS: 0000000000000000 6b6b6b6b6b6b6b6b
  0000000000000001 00000000000003a6 00000000002e0a46 00000000004b4160
  0000000000000001 00000000bbd79758 00000000b7343e58 00000000b8854148
  00000000bd34dea0 00000000b7343c20 0000000000000001 00000000004b6d08
  00000000002e0a46 00000000b7343c20 Krnl Code: 00000000002e0b7e:
  eb9fb0a00004	lmg	%r9,%r15,160(%r11) 00000000002e0b84:
  07f4		bcr	15,%r4 00000000002e0b86:
  e31090080004	lg	%r1,8(%r9) >00000000002e0b8c:
  d501109cd000	clc	156(2,%r1),0(%r13) 00000000002e0b92:
  a784ff5d		brc	8,2e0a4c 00000000002e0b96:
  b9040029		lgr	%r2,%r9 00000000002e0b9a:
  c0e5fffff9c3	brasl	%r14,2dff20 00000000002e0ba0:
  a7f4ff56		brc	15,2e0a4c Call Trace:
  ([<00000000002e0a46>] disassociate_ctty+0x7a/0x288)
   [<0000000000141fe6>] do_exit+0x212/0x8d4
   [<0000000000142708>] do_group_exit+0x60/0xcc
   [<0000000000150660>] get_signal_to_deliver+0x270/0x3ac
   [<000000000010bfd6>] do_signal+0x8e/0x8dc
   [<0000000000113772>] sysc_sigpending+0xe/0x22
   [<000001ff0000b134>] 0x1ff0000b134
  INFO: lockdep is turned off.
  Last Breaking-Event-Address:
   [<00000000002e0a48>] disassociate_ctty+0x7c/0x288
  Kernel panic - not syncing: Fatal exception: panic_on_oops

It seems that tty was already free in disassocate_ctty when it tries
to dereference tty->driver.

After moving the lock_kernel before the mutex_unlock, I can no longer
reproduce the problem.

[ This is a temporary partial fix for the documented and long standing
  race in disassociate_tty.  This stops most problem cases for now.

  For the next release the -next tree has an initial implementation of
  kref counting for tty structures and this quickfix will be dropped.

                                                              - Alan ]
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by; Alan Cox <alan@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      000b9151
    • Geert Uytterhoeven's avatar
      m68k{,nommu}: Wire up new system calls · 0e7d5bb8
      Geert Uytterhoeven authored 
      Wire up for m68k{,nommu} the system calls that were added in the last merge
window:

 - 4006553b ("flag parameters: inotify_init")
 - ed8cae8b ("flag parameters: pipe")
 - 336dd1f7 ("flag parameters: dup2")
 - a0998b50 ("flag parameters: epoll_create")
 - 9fe5ad9c ("flag parameters add-on: remove
						 epoll_create size param")
 - b087498e ("flag parameters: eventfd")
 - 9deb27ba ("flag parameters: signalfd")
Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Acked-by: default avatarGreg Ungerer <gerg@uclinux.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      0e7d5bb8
    • Linus Torvalds's avatar
      Revert "fbcon: bgcolor fix" · 3838f59f
      Linus Torvalds authored 
      This reverts commit 2d04a4a7, which made
it impossible to make the softcursor use the highlight colors.

Yes, the fourth bit should be "blinking", but since we cannot reasonably
blink in fbcon, highlighting it with a bright background is preferable.
Reported-by: default avatarPavel Machek <pavel@suse.cz>
Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Antonino A. Daplas <adaplas@pol.net>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3838f59f
    • Paul Mackerras's avatar
      powerpc: Remove include/linux/harrier_defs.h · 13fa00a8
      Paul Mackerras authored 
      It was only used by code in arch/ppc, and arch/ppc is gone, so remove
the unused harrier_defs.h as well.
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      13fa00a8
    • Junio C Hamano's avatar
      powerpc: Do not ignore arch/powerpc/include · 0afd2ac9
      Junio C Hamano authored 
      Back when .gitignore file was added to arch/powerpc/ in 06f2138e ([POWERPC]
Add files build to .gitignore, 2006-11-26), there indeed was nothing
tracked in the ignored hierarchy and ignoring everything made sense.  But
we have very many tracked files there these days, and having a higher
level .gitignore that ignores everything is asking for future troubles..

This should have been part of b8b572e1 (powerpc: Move include files to
arch/powerpc/include/asm, 2008-08-01).
Signed-off-by: default avatarJunio C Hamano <gitster@pobox.com>
Acked-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      0afd2ac9
    • Robert P. J. Day's avatar
      powerpc: Delete completed "ppc removal" task from feature removal file · 274827c3
      Robert P. J. Day authored 
      Signed-off-by: default avatarRobert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      274827c3
    • Benjamin Herrenschmidt's avatar
      powerpc/mm: Fix attribute confusion with htab_bolt_mapping() · bc033b63
      Benjamin Herrenschmidt authored 
      The function htab_bolt_mapping() is used to create permanent
mappings in the MMU hash table, for example, in order to create
the linear mapping of vmemmap.  It's also used by early boot
ioremap (before mem_init_done).

However, the way ioremap uses it is incorrect as it passes it the
protection flags in the "linux PTE" form while htab_bolt_mapping()
expects them in the hash table format.  This is made more confusing by
the fact that some of those flags are actually in the same position in
both cases.

This fixes it all by making htab_bolt_mapping() take normal linux
protection flags instead, and use a little helper to convert them to
htab flags. Callers can now use the usual PAGE_* definitions safely.
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>

 arch/powerpc/include/asm/mmu-hash64.h |    2 -
 arch/powerpc/mm/hash_utils_64.c       |   65 ++++++++++++++++++++--------------
 arch/powerpc/mm/init_64.c             |    9 +---
 3 files changed, 44 insertions(+), 32 deletions(-)
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      bc033b63
    • Benjamin Herrenschmidt's avatar
      powerpc/pci: Don't keep ISA memory hole resources in the tree · 8db13a0e
      Benjamin Herrenschmidt authored 
      When we have an ISA memory hole (ie, a PCI window that allows us to
generate PCI memory cycles at low PCI address) mixed with other
resources using a different CPU <=> PCI mapping, we must not keep
the ISA hole in the bridge resource list.

If we do, things might start trying to allocate device resources
in there and will get the PCI addresses wrong.

This fixes it by arranging to remove the ISA memory hole resource in
this case.  This fixes various cases of PCMCIA breakage on PowerBooks
using the MPC106 "grackle" bridge.
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      8db13a0e
    • Nathan Fontenot's avatar
      powerpc: Zero fill the return values of rtas argument buffer · b79998fc
      Nathan Fontenot authored 
      The kernel copy of the rtas args struct contains the return
value(s) for the specified rtas call.  These are copied back
to user space with the assumption that every value has been
set by the rtas call, which turns out to be not always true.
Thus userspace can see random values and think the call failed
when in fact it succeeded, but for some reason didn't set one
of the return values.

This fixes the problem by zeroing out the return value fields
of the rtas args struct before processing the rtas call.
Signed-off-by: default avatarNathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      b79998fc
  3. 09 Aug, 2008 3 commits
  5. 08 Aug, 2008 26 commits