1. 22 May, 2010 1 commit
    • Grant Likely's avatar
      of: Remove duplicate fields from of_platform_driver · 4018294b
      Grant Likely authored
      
      
      .name, .match_table and .owner are duplicated in both of_platform_driver
      and device_driver.  This patch is a removes the extra copies from struct
      of_platform_driver and converts all users to the device_driver members.
      
      This patch is a pretty mechanical change.  The usage model doesn't change
      and if any drivers have been missed, or if anything has been fixed up
      incorrectly, then it will fail with a compile time error, and the fixup
      will be trivial.  This patch looks big and scary because it touches so
      many files, but it should be pretty safe.
      Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      Acked-by: default avatarSean MacLennan <smaclennan@pikatech.com>
      4018294b
  2. 18 May, 2010 2 commits
  3. 29 Apr, 2010 1 commit
    • Grant Likely's avatar
      driver-core: Add device node pointer to struct device · d706c1b0
      Grant Likely authored
      
      
      Currently, platforms using CONFIG_OF add a 'struct device_node *of_node'
      to dev->archdata.  However, with CONFIG_OF becoming generic for all
      architectures, it makes sense for commonality to move it out of archdata
      and into struct device proper.
      
      This patch adds a struct device_node *of_node member to struct device
      and updates all locations which currently write the device_node pointer
      into archdata to also update dev->of_node.  Subsequent patches will
      modify callers to use the archdata location and ultimately remove
      the archdata member entirely.
      Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
      Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      CC: Michal Simek <monstr@monstr.eu>
      CC: Greg Kroah-Hartman <gregkh@suse.de>
      CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      CC: "David S. Miller" <davem@davemloft.net>
      CC: Stephen Rothwell <sfr@canb.auug.org.au>
      CC: Jeremy Kerr <jeremy.kerr@canonical.com>
      CC: microblaze-uclinux@itee.uq.edu.au
      CC: linux-kernel@vger.kernel.org
      CC: linuxppc-dev@ozlabs.org
      CC: sparclinux@vger.kernel.org
      d706c1b0
  4. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  5. 27 Mar, 2010 1 commit
  6. 18 Mar, 2010 1 commit
  7. 09 Mar, 2010 6 commits
  8. 07 Mar, 2010 1 commit
  9. 05 Mar, 2010 1 commit
    • Scott Wood's avatar
      powerpc/perf: e500 support · a1110654
      Scott Wood authored
      
      
      This implements perf_event support for the Freescale embedded performance
      monitor, based on the existing perf_event.c that supports server/classic
      chips.
      
      Some limitations:
      - Performance monitor interrupts are regular EE interrupts, and thus you
        can't profile places with interrupts disabled.  We may want to implement
        soft IRQ-disabling, with perfmon interrupts exempted and treated as NMIs.
      - When trying to schedule multiple event groups at once, and using
        restricted events, situations could arise where scheduling fails even
        though it would be possible.  Consider three groups, each with two events.
        One group has restricted events, the others don't.  The two non-restricted
        groups are scheduled, then one is removed, which happens to occupy the two
        counters that can't do restricted events.  The remaining non-restricted
        group will not be moved to the non-restricted-capable counters to make
        room if the restricted group tries to be scheduled.
      Signed-off-by: default avatarScott Wood <scottwood@freescale.com>
      Acked-by: default avatarPaul Mackerras <paulus@samba.org>
      Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
      a1110654
  10. 04 Mar, 2010 4 commits
  11. 23 Feb, 2010 1 commit
  12. 19 Feb, 2010 6 commits
  13. 18 Feb, 2010 1 commit
  14. 17 Feb, 2010 3 commits
  15. 16 Feb, 2010 3 commits
  16. 13 Feb, 2010 2 commits
    • Peter Tyser's avatar
      powerpc/85xx: Fix SMP when "cpu-release-addr" is in lowmem · d1d47ec6
      Peter Tyser authored
      
      
      Recent U-Boot commit 5ccd29c3679b3669b0bde5c501c1aa0f325a7acb caused
      the "cpu-release-addr" device tree property to contain the physical RAM
      location that secondary cores were spinning at.  Previously, the
      "cpu-release-addr" property contained a value referencing the boot page
      translation address range of 0xfffffxxx, which then indirectly accessed
      RAM.
      
      The "cpu-release-addr" is currently ioremapped and the secondary cores
      kicked.  However, due to the recent change in "cpu-release-addr", it
      sometimes points to a memory location in low memory that cannot be
      ioremapped.  For example on a P2020-based board with 512MB of RAM the
      following error occurs on bootup:
      
        <...>
        mpic: requesting IPIs ...
        __ioremap(): phys addr 0x1ffff000 is RAM lr c05df9a0
        Unable to handle kernel paging request for data at address 0x00000014
        Faulting instruction address: 0xc05df9b0
        Oops: Kernel access of bad area, sig: 11 [#1]
        SMP NR_CPUS=2 P2020 RDB
        Modules linked in:
        <... eventual kernel panic>
      
      Adding logic to conditionally ioremap or access memory directly resolves
      the issue.
      Signed-off-by: default avatarPeter Tyser <ptyser@xes-inc.com>
      Signed-off-by: default avatarNate Case <ncase@xes-inc.com>
      Reported-by: default avatarDipen Dudhat <B09055@freescale.com>
      Tested-by: default avatarDipen Dudhat <B09055@freescale.com>
      Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
      d1d47ec6
    • Anton Vorontsov's avatar
      powerpc/85xx: Fix oops during MSI driver probe on MPC85xxMDS boards · fa644298
      Anton Vorontsov authored
      
      
      MPC85xx chips report the wrong value in feature reporting register,
      and that causes the following oops:
      
       Unable to handle kernel paging request for data at address 0x00000c00
       Faulting instruction address: 0xc0019294
       Oops: Kernel access of bad area, sig: 11 [#1]
       MPC8569 MDS
       Modules linked in:
       [...]
       NIP [c0019294] mpic_set_irq_type+0x2f0/0x368
       LR [c0019124] mpic_set_irq_type+0x180/0x368
       Call Trace:
       [ef851d60] [c0019124] mpic_set_irq_type+0x180/0x368 (unreliable)
       [ef851d90] [c007958c] __irq_set_trigger+0x44/0xd4
       [ef851db0] [c007b550] set_irq_type+0x40/0x7c
       [ef851dc0] [c0004a60] irq_create_of_mapping+0xb4/0x114
       [ef851df0] [c0004af0] irq_of_parse_and_map+0x30/0x40
       [ef851e20] [c0405678] fsl_of_msi_probe+0x1a0/0x328
       [ef851e60] [c02e6438] of_platform_device_probe+0x5c/0x84
       [...]
      
      This is because mpic_alloc() assigns wrong values to
      mpic->isu_{size,shift,mask}, and things eventually break when
      _mpic_irq_read() is trying to use them.
      
      This patch fixes the issue by enabling MPIC_BROKEN_FRR_NIRQS quirk.
      Signed-off-by: default avatarAnton Vorontsov <avorontsov@ru.mvista.com>
      Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
      fa644298
  17. 09 Feb, 2010 5 commits