1. 13 7月, 2010 1 次提交
    • I
      rt2x00: Implement watchdog monitoring · c965c74b
      Ivo van Doorn 提交于
      Implement watchdog monitoring for USB devices (PCI support can
      be added later). This will determine if URBs being uploaded to
      the hardware are actually returning. Both rt2500usb and rt2800usb
      have shown that URBs being uploaded can remain hanging without
      being released by the hardware.
      By using this watchdog, a queue can be reset when this occurs.
      For rt2800usb it has been tested that the connection is preserved
      even though this interruption.
      Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      c965c74b
  2. 01 7月, 2010 2 次提交
  3. 16 6月, 2010 2 次提交
  4. 03 6月, 2010 2 次提交
  5. 29 4月, 2010 1 次提交
  6. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      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: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  7. 09 2月, 2010 1 次提交
  8. 06 1月, 2010 1 次提交
  9. 22 12月, 2009 2 次提交
  10. 29 11月, 2009 1 次提交
  11. 20 11月, 2009 1 次提交
    • J
      mac80211: request TX status where needed · 7351c6bd
      Johannes Berg 提交于
      Right now all frames mac80211 hands to the driver
      have the IEEE80211_TX_CTL_REQ_TX_STATUS flag set to
      request TX status. This isn't really necessary, only
      the injected frames need TX status (the latter for
      hostapd) so move setting this flag.
      
      The rate control algorithms also need TX status, but
      they don't require it.
      
      Also, rt2x00 uses that bit for its own purposes and
      seems to require it being set for all frames, but
      that can be fixed in rt2x00.
      
      This doesn't really change anything for any drivers
      but in the future drivers using hw-rate control may
      opt to not report TX status for frames that don't
      have the IEEE80211_TX_CTL_REQ_TX_STATUS flag set.
      Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
      Acked-by: Ivo van Doorn <IvDoorn@gmail.com> [rt2x00 bits]
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      7351c6bd
  12. 12 11月, 2009 2 次提交
  13. 07 11月, 2009 1 次提交
  14. 01 9月, 2009 2 次提交
    • I
      rt2x00: Reorganize padding & L2 padding · daee6c09
      Ivo van Doorn 提交于
      The old function rt2x00queue_payload_align() handled
      both adding and removing L2 padding and some basic
      frame alignment. The entire function was being abused
      because it had multiple functions and the header length
      argument was somtimes used to align the header instead
      of the payload.
      
      Additionally there was a bug when inserting L2 padding
      that only the payload was aligned but not the header. This
      happens when the header wasn't aligned properly by mac80211,
      but rt2x00lib only moves the payload.
      
      A secondary problem was that when removing L2 padding during
      TXdone or RX the skb wasn't resized to the proper size.
      
      Split the function into seperate functions each handling
      its task as it should.
      Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      daee6c09
    • I
      rt2x00: Fix TX status reporting · 2e27cff8
      Ivo van Doorn 提交于
      Not all values of the TX status enumeration were
      covered during updating of the TX statistics. This
      could lead to wrong bitrate tuning but also wrong
      behavior in tools like hostapd.
      Signed-off-by: NIvo van Doorn <IvDoorn@gmail.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      2e27cff8
  15. 20 8月, 2009 3 次提交
  16. 14 8月, 2009 2 次提交
  17. 05 8月, 2009 2 次提交
    • P
      rt2x00: cancel all work on disconnect · d8cc8926
      Pavel Roskin 提交于
      Signed-off-by: NPavel Roskin <proski@gnu.org>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      d8cc8926
    • L
      mac80211: redefine usage of the mac80211 workqueue · 42935eca
      Luis R. Rodriguez 提交于
      The mac80211 workqueue exists to enable mac80211 and drivers
      to queue their own work on a single threaded workqueue. mac80211
      takes care to flush the workqueue during suspend but we never
      really had requirements on drivers for how they should use
      the workqueue in consideration for suspend.
      
      We extend mac80211 to document how the mac80211 workqueue should
      be used, how it should not be used and finally move raw access to
      the workqueue to mac80211 only. Drivers and mac80211 use helpers
      to queue work onto the mac80211 workqueue:
      
        * ieee80211_queue_work()
        * ieee80211_queue_delayed_work()
      
      These helpers will now warn if mac80211 already completed its
      suspend cycle and someone is trying to queue work. mac80211
      flushes the mac80211 workqueue prior to suspend a few times,
      but we haven't taken the care to ensure drivers won't add more
      work after suspend. To help with this we add a warning when
      someone tries to add work and mac80211 already completed the
      suspend cycle.
      
      Drivers should ensure they cancel any work or delayed work
      in the mac80211 stop() callback.
      Signed-off-by: NLuis R. Rodriguez <lrodriguez@atheros.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      42935eca
  18. 25 7月, 2009 1 次提交
  19. 11 7月, 2009 2 次提交
  20. 21 5月, 2009 1 次提交
  21. 07 5月, 2009 2 次提交
  22. 16 4月, 2009 1 次提交
    • H
      rt2x00: prevent double kfree when failing to register hardware · f05faa31
      Herton Ronaldo Krzesinski 提交于
      In a scenario where there isn't any firmware available, we will have a
      double kfree of rt2x00dev->spec.channels_info when ieee80211_register_hw
      returns an error status inside rt2x00lib_probe_hw.
      
      The problem is that if ieee80211_register_hw fails, we call
      rt2x00lib_remove_hw twice:
      * first inside rt2x00lib_probe_hw upon failure of ieee80211_register_hw
      * error status is returned to rt2x00lib_probe_dev, which then sees it and
        calls in this case rt2x00lib_remove_dev that will again run
        rt2x00lib_remove_hw
      
      Prevent this avoiding calling rt2x00lib_remove_hw inside
      rt2x00lib_probe_hw
      
      Problem was detected with CONFIG_DEBUG_PAGEALLOC=y, CONFIG_SLUB_DEBUG=y,
      CONFIG_SLUB_DEBUG_ON=y, that dumps this with no firmware available:
      
      rt61pci 0000:00:07.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
      wmaster0 (rt61pci): not using net_device_ops yet
      phy0: Selected rate control algorithm 'pid'
      phy0: Failed to initialize wep: -2
      phy0 -> rt2x00lib_probe_dev: Error - Failed to initialize hw.
      =============================================================================
      BUG kmalloc-128: Object already free
      -----------------------------------------------------------------------------
      
      INFO: Allocated in rt61pci_probe_hw+0x3e5/0x6e0 [rt61pci] age=340 cpu=0 pid=21
      INFO: Freed in rt2x00lib_remove_hw+0x59/0x70 [rt2x00lib] age=0 cpu=0 pid=21
      INFO: Slab 0xc13ac3e0 objects=23 used=10 fp=0xdd59f6e0 flags=0x400000c3
      INFO: Object 0xdd59f6e0 @offset=1760 fp=0xdd59f790
      
      Bytes b4 0xdd59f6d0:  15 00 00 00 b2 8a fb ff 5a 5a 5a 5a 5a 5a 5a 5a ....².ûÿZZZZZZZZ
        Object 0xdd59f6e0:  6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
        Object 0xdd59f6f0:  6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
        Object 0xdd59f700:  6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
        Object 0xdd59f710:  6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
        Object 0xdd59f720:  6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
        Object 0xdd59f730:  6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
        Object 0xdd59f740:  6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
        Object 0xdd59f750:  6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk¥
       Redzone 0xdd59f760:  bb bb bb bb                                     »»»»
       Padding 0xdd59f788:  5a 5a 5a 5a 5a 5a 5a 5a                         ZZZZZZZZ
      Pid: 21, comm: stage1 Not tainted 2.6.29.1-desktop-1.1mnb #1
      Call Trace:
       [<c01abbb3>] print_trailer+0xd3/0x120
       [<c01abd37>] object_err+0x37/0x50
       [<c01acf57>] __slab_free+0xe7/0x2f0
       [<c01ad1de>] kfree+0x7e/0xd0
       [<e0e4a239>] ? rt2x00lib_remove_hw+0x59/0x70 [rt2x00lib]
       [<e0e4a239>] ? rt2x00lib_remove_hw+0x59/0x70 [rt2x00lib]
       [<e0e4a239>] rt2x00lib_remove_hw+0x59/0x70 [rt2x00lib]
       [<e0e4acc7>] rt2x00lib_remove_dev+0x37/0x50 [rt2x00lib]
       [<e0e4b087>] rt2x00lib_probe_dev+0x1a7/0x3b0 [rt2x00lib]
       [<e0eb288f>] rt2x00pci_probe+0xdf/0x1ee [rt2x00pci]
       [<c026b9ee>] local_pci_probe+0xe/0x10
       [<c026c750>] pci_device_probe+0x60/0x80
       [<c02d5c2a>] driver_probe_device+0x9a/0x2e0
       [<c02d5ef9>] __driver_attach+0x89/0x90
       [<c02d541b>] bus_for_each_dev+0x4b/0x70
       [<c026c690>] ? pci_device_remove+0x0/0x40
       [<c02d59d9>] driver_attach+0x19/0x20
       [<c02d5e70>] ? __driver_attach+0x0/0x90
       [<c02d4cef>] bus_add_driver+0x1cf/0x2a0
       [<c026c690>] ? pci_device_remove+0x0/0x40
       [<c02d60c9>] driver_register+0x69/0x140
       [<c026c9b0>] __pci_register_driver+0x40/0x80
       [<e0ecc000>] ? rt61pci_init+0x0/0x19 [rt61pci]
       [<e0ecc017>] rt61pci_init+0x17/0x19 [rt61pci]
       [<c0101116>] do_one_initcall+0x26/0x1c0
       [<c01ab90c>] ? slab_pad_check+0x3c/0x120
       [<c01ab90c>] ? slab_pad_check+0x3c/0x120
       [<c01ac8da>] ? check_object+0xda/0x210
       [<c01b0026>] ? percpu_free+0x46/0x50
       [<c01ad09e>] ? __slab_free+0x22e/0x2f0
       [<c01b0026>] ? percpu_free+0x46/0x50
       [<c01b0026>] ? percpu_free+0x46/0x50
       [<c01b0026>] ? percpu_free+0x46/0x50
       [<c01687ec>] ? stop_machine_destroy+0x3c/0x40
       [<c015e515>] ? load_module+0xa5/0x1c50
       [<e0ec5000>] ? rt61pci_eepromregister_read+0x0/0x40 [rt61pci]
       [<e0eb2000>] ? rt2x00pci_write_tx_data+0x0/0x90 [rt2x00pci]
       [<c03ac2fb>] ? mutex_lock+0xb/0x20
       [<c03ac2fb>] ? mutex_lock+0xb/0x20
       [<c017ad16>] ? tracepoint_update_probe_range+0x76/0xa0
       [<c017ad6f>] ? tracepoint_module_notify+0x2f/0x40
       [<c03b02ed>] ? notifier_call_chain+0x2d/0x70
       [<c014f0ed>] ? __blocking_notifier_call_chain+0x4d/0x60
       [<c014f11a>] ? blocking_notifier_call_chain+0x1a/0x20
       [<c0160156>] sys_init_module+0x96/0x1d0
       [<c019dad6>] ? sys_munmap+0x46/0x60
       [<c0105546>] syscall_call+0x7/0xb
      FIX kmalloc-128: Object at 0xdd59f6e0 not freed
      rt61pci 0000:00:07.0: PCI INT A disabled
      rt61pci: probe of 0000:00:07.0 failed with error -2
      Signed-off-by: NHerton Ronaldo Krzesinski <herton@mandriva.com.br>
      Acked-by: NIvo van Doorn <IvDoorn@gmail.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      f05faa31
  23. 10 2月, 2009 2 次提交
  24. 30 1月, 2009 4 次提交